diff --git a/tools/build_protobuf b/tools/build_protobuf
index fd2eb5b69..6b32317fb 100755
--- a/tools/build_protobuf
+++ b/tools/build_protobuf
@@ -1,6 +1,17 @@
 #!/bin/bash
 set -e
 
+IS_CORE=""
+
+if [ "$1" == "--core" ]; then
+    shift
+    IS_CORE=yes
+elif [ "$1" == "--no-core" ]; then
+    shift
+elif echo $PWD | grep -q "trezor-core"; then
+    IS_CORE=yes
+fi
+
 if [ -n "$1" ]; then
     OUTDIR=`readlink -f "$1"`
 fi
@@ -29,17 +40,26 @@ for file in $PROTO_FILES; do
     protoc --python_out="$PB2_OUT" -I/usr/include -I"$PROTO_PATH" "$PROTO_PATH/$file.proto"
 done
 
-# create index (__init__.py)
-cat > "$TMPDIR/$INDEX" << EOF
-# Automatically generated by pb2py
 
-EOF
+if [ -n "$IS_CORE" ]; then
+    # generate for micropython
+    PB2PY_OPTS="-m"
+else
+    # create index (__init__.py)
+    echo "# Automatically generated by pb2py" > $TMPDIR/$INDEX
+    echo >> $TMPDIR/$INDEX
+    PB2PY_OPTS="-l $TMPDIR/$INDEX"
+fi
 
 # convert google protobuf library to trezor's internal format
 for file in $PROTO_FILES; do
-    ./pb2py -P "trezorlib.protobuf" -p "$PB2_OUT" -l "$TMPDIR/$INDEX" "$file" "$TMPDIR"
+    ./pb2py $PB2PY_OPTS -P "trezorlib.protobuf" -p "$PB2_OUT" "$file" "$TMPDIR"
 done
 
+if [ -n "$IS_CORE" ]; then
+    cp "$TMPDIR/MessageType.py" "$TMPDIR/wire_types.py"
+fi
+
 # ensure $GENPATH exists and is empty of messages
 mkdir -p "$GENPATH"
 # only remove messages - there could possibly be other files not starting with capital letter
diff --git a/tools/pb2py b/tools/pb2py
index 58a11e5e5..6f1bc2af7 100755
--- a/tools/pb2py
+++ b/tools/pb2py
@@ -7,6 +7,44 @@ import importlib
 import logging
 import os
 import sys
+from collections import namedtuple
+
+ProtoField = namedtuple('ProtoField', 'name, number, proto_type, py_type, repeated, required, orig')
+
+
+def parse_field(number, field):
+    FIELD_TYPES = {
+        field.TYPE_UINT64:  ('p.UVarintType', 'int'),
+        field.TYPE_UINT32:  ('p.UVarintType', 'int'),
+        field.TYPE_ENUM:    ('p.UVarintType', 'int'),
+        field.TYPE_SINT32:  ('p.SVarintType', 'int'),
+        field.TYPE_SINT64:  ('p.SVarintType', 'int'),
+        field.TYPE_STRING:  ('p.UnicodeType', 'str'),
+        field.TYPE_BOOL:    ('p.BoolType', 'bool'),
+        field.TYPE_BYTES:   ('p.BytesType', 'bytes'),
+    }
+    repeated = (field.label == field.LABEL_REPEATED)
+    required = (field.label == field.LABEL_REQUIRED)
+    if field.type == field.TYPE_MESSAGE:
+        proto_type = py_type = field.message_type.name
+    else:
+        try:
+            proto_type, py_type = FIELD_TYPES[field.type]
+        except KeyError:
+            raise ValueError("Unknown field type %d for field %s" % (field.type, field.name)) from None
+
+    if repeated:
+        py_type = "List[%s]" % py_type
+
+    return ProtoField(
+        name=field.name,
+        number=number,
+        proto_type=proto_type,
+        py_type=py_type,
+        repeated=repeated,
+        required=required,
+        orig=field,
+    )
 
 
 def import_pb2(name):
@@ -17,13 +55,6 @@ def create_message_import(name):
     return "from .%s import %s" % (name, name)
 
 
-def create_const(name, value, is_upy):
-    if is_upy:
-        return "%s = const(%s)" % (name, value)
-    else:
-        return "%s = %s" % (name, value)
-
-
 def remove_from_start(s, prefix):
     if s.startswith(prefix):
         return s[len(prefix):]
@@ -42,83 +73,82 @@ def process_message_imports(descriptor):
         yield create_message_import(name)
 
 
-def process_message(descriptor, protobuf_module, msg_id, indexfile, is_upy):
+def create_init_method(fields):
+    yield         "    def __init__("
+    yield         "        self,"
+    for field in fields[:-1]:
+        yield     "        %s: %s = None," % (field.name, field.py_type)
+    # last field must not have a traling comma
+    yield         "        %s: %s = None" % (fields[-1].name, fields[-1].py_type)
+    yield         "    ) -> None:"
+
+    for field in fields:
+        if field.repeated:
+            yield "        self.{0} = {0} if {0} is not None else []".format(field.name)
+        else:
+            yield "        self.{0} = {0}".format(field.name)
+
+
+def process_message(descriptor, protobuf_module, msg_id, is_upy):
     logging.debug("Processing message %s", descriptor.name)
 
     if is_upy:
         yield "import protobuf as p"
     else:
         yield "from .. import protobuf as p"
+
+    fields = list(parse_field(number, field)
+                  for number, field
+                  in descriptor.fields_by_number.items())
+
+    if any(field.repeated for field in fields):
+        yield "if __debug__:"
+        yield "    try:"
+        yield "        from typing import List"
+        yield "    except ImportError:"
+        yield "        List = None"
+
     yield from process_message_imports(descriptor)
 
     yield ""
     yield ""
     yield "class %s(p.MessageType):" % descriptor.name
 
-    if descriptor.fields_by_number:
-        yield "    FIELDS = {"
-    elif msg_id is None:
-        yield "    pass"
-
-    for number, field in descriptor.fields_by_number.items():
-        field_name = field.name
-        field_type = None
-        repeated = (field.label == field.LABEL_REPEATED)
-        required = (field.label == field.LABEL_REQUIRED)
-
-        types = {
-            field.TYPE_UINT64:  'p.UVarintType',
-            field.TYPE_UINT32:  'p.UVarintType',
-            field.TYPE_ENUM:    'p.UVarintType',
-            field.TYPE_SINT32:  'p.SVarintType',
-            field.TYPE_SINT64:  'p.SVarintType',
-            field.TYPE_STRING:  'p.UnicodeType',
-            field.TYPE_BOOL:    'p.BoolType',
-            field.TYPE_BYTES:   'p.BytesType'
-        }
-
-        if field.type == field.TYPE_MESSAGE:
-            field_type = field.message_type.name
-        else:
-            try:
-                field_type = types[field.type]
-            except KeyError:
-                raise ValueError("Unknown field type %d for field %s" % (field.type, field_name))
-
-        comments = []
-        if required:
-            comments.append('required')
-        if field.has_default_value:
-            comments.append("default=%s" % repr(field.default_value))
-
-        if comments:
-            comment = "  # %s" % ' '.join(comments)
-        else:
-            comment = ''
-
-        if repeated:
-            flags = 'p.FLAG_REPEATED'
-        else:
-            flags = '0'
-
-        yield "        %d: ('%s', %s, %s),%s" % (number, field_name, field_type, flags, comment)
-
-    if descriptor.fields_by_name:
-        yield "    }"
-
     if msg_id is not None:
         yield "    MESSAGE_WIRE_TYPE = %d" % msg_id
-        if indexfile is not None:
-            indexfile.write(create_const(t, msg_id, is_upy))
+
+    if fields:
+        yield "    FIELDS = {"
+        for field in fields:
+            comments = []
+            if field.required:
+                comments.append('required')
+            if field.orig.has_default_value:
+                comments.append("default=%s" % repr(field.orig.default_value))
+
+            if comments:
+                comment = "  # %s" % ' '.join(comments)
+            else:
+                comment = ''
+
+            if field.repeated:
+                flags = 'p.FLAG_REPEATED'
+            else:
+                flags = '0'
+
+            yield "        %d: ('%s', %s, %s),%s" % (field.number, field.name, field.proto_type, flags, comment)
+
+        yield "    }"
+        yield ""
+        yield from create_init_method(fields)
+
+    if not fields and not msg_id:
+        yield "    pass"
 
 
 def process_enum(descriptor, is_upy):
     logging.debug("Processing enum %s", descriptor.name)
 
-    if is_upy:
-        yield "from micropython import const"
-        yield ""
-
     for name, value in descriptor.values_by_name.items():
         # Remove type name from the beginning of the constant
         # For example "PinMatrixRequestType_Current" -> "Current"
@@ -131,10 +161,10 @@ def process_enum(descriptor, is_upy):
             enum_prefix, _ = enum_prefix.rsplit("Type", 1)
             name = remove_from_start(name, "%s_" % enum_prefix)
 
-        yield create_const(name, value.number, is_upy)
+        yield "%s = %s" % (name, value.number)
 
 
-def process_file(descriptor, protobuf_module, genpath, indexfile, modlist, is_upy):
+def process_file(descriptor, protobuf_module, genpath, modlist, is_upy):
     logging.info("Processing module %s", descriptor.name)
 
     msg_types = import_pb2('messages').MessageType
@@ -146,7 +176,7 @@ def process_file(descriptor, protobuf_module, genpath, indexfile, modlist, is_up
         except ValueError:
             msg_id = None
 
-        out = process_message(message_descriptor, protobuf_module, msg_id, indexfile, is_upy)
+        out = process_message(message_descriptor, protobuf_module, msg_id, is_upy)
         write_to_file(genpath, name, out)
         if modlist:
             modlist.write(create_message_import(name) + "\n")
@@ -173,7 +203,6 @@ if __name__ == '__main__':
     parser.add_argument('module', help="Name of module to generate")
     parser.add_argument('genpath', help="Directory for generated source code")
     parser.add_argument('-P', '--protobuf-module', default="protobuf", help="Name of protobuf module")
-    parser.add_argument('-i', '--indexfile', type=argparse.FileType('a'), help="Generate index file of wire types")
     parser.add_argument('-l', '--modlist', type=argparse.FileType('a'), help="Generate list of modules")
     parser.add_argument('-p', '--protopath', type=str, help="Path to search for pregenerated Google's python sources")
     parser.add_argument('-m', '--micropython', action='store_true', help="Use micropython-favoured source code")
@@ -185,4 +214,4 @@ if __name__ == '__main__':
     # This must be done after sys.path.append
     module = import_pb2(args.module)
 
-    process_file(module.DESCRIPTOR, args.protobuf_module, args.genpath, args.indexfile, args.modlist, args.micropython)
+    process_file(module.DESCRIPTOR, args.protobuf_module, args.genpath, args.modlist, args.micropython)
diff --git a/trezorlib/messages/Address.py b/trezorlib/messages/Address.py
index 506935c11..fd4edab80 100644
--- a/trezorlib/messages/Address.py
+++ b/trezorlib/messages/Address.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class Address(p.MessageType):
+    MESSAGE_WIRE_TYPE = 30
     FIELDS = {
         1: ('address', p.UnicodeType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 30
+
+    def __init__(
+        self,
+        address: str = None
+    ) -> None:
+        self.address = address
diff --git a/trezorlib/messages/ApplyFlags.py b/trezorlib/messages/ApplyFlags.py
index f4163862b..9240dd9bf 100644
--- a/trezorlib/messages/ApplyFlags.py
+++ b/trezorlib/messages/ApplyFlags.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class ApplyFlags(p.MessageType):
+    MESSAGE_WIRE_TYPE = 28
     FIELDS = {
         1: ('flags', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 28
+
+    def __init__(
+        self,
+        flags: int = None
+    ) -> None:
+        self.flags = flags
diff --git a/trezorlib/messages/ApplySettings.py b/trezorlib/messages/ApplySettings.py
index fbb776e6a..f269acd18 100644
--- a/trezorlib/messages/ApplySettings.py
+++ b/trezorlib/messages/ApplySettings.py
@@ -3,6 +3,7 @@ from .. import protobuf as p
 
 
 class ApplySettings(p.MessageType):
+    MESSAGE_WIRE_TYPE = 25
     FIELDS = {
         1: ('language', p.UnicodeType, 0),
         2: ('label', p.UnicodeType, 0),
@@ -11,4 +12,19 @@ class ApplySettings(p.MessageType):
         5: ('passphrase_source', p.UVarintType, 0),
         6: ('auto_lock_delay_ms', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 25
+
+    def __init__(
+        self,
+        language: str = None,
+        label: str = None,
+        use_passphrase: bool = None,
+        homescreen: bytes = None,
+        passphrase_source: int = None,
+        auto_lock_delay_ms: int = None
+    ) -> None:
+        self.language = language
+        self.label = label
+        self.use_passphrase = use_passphrase
+        self.homescreen = homescreen
+        self.passphrase_source = passphrase_source
+        self.auto_lock_delay_ms = auto_lock_delay_ms
diff --git a/trezorlib/messages/ButtonRequest.py b/trezorlib/messages/ButtonRequest.py
index 56cbca251..ea57764cc 100644
--- a/trezorlib/messages/ButtonRequest.py
+++ b/trezorlib/messages/ButtonRequest.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class ButtonRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 26
     FIELDS = {
         1: ('code', p.UVarintType, 0),
         2: ('data', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 26
+
+    def __init__(
+        self,
+        code: int = None,
+        data: str = None
+    ) -> None:
+        self.code = code
+        self.data = data
diff --git a/trezorlib/messages/ChangePin.py b/trezorlib/messages/ChangePin.py
index 217a84a73..9f7b19547 100644
--- a/trezorlib/messages/ChangePin.py
+++ b/trezorlib/messages/ChangePin.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class ChangePin(p.MessageType):
+    MESSAGE_WIRE_TYPE = 4
     FIELDS = {
         1: ('remove', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 4
+
+    def __init__(
+        self,
+        remove: bool = None
+    ) -> None:
+        self.remove = remove
diff --git a/trezorlib/messages/CipherKeyValue.py b/trezorlib/messages/CipherKeyValue.py
index 2673b5be0..f76d81665 100644
--- a/trezorlib/messages/CipherKeyValue.py
+++ b/trezorlib/messages/CipherKeyValue.py
@@ -1,8 +1,14 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class CipherKeyValue(p.MessageType):
+    MESSAGE_WIRE_TYPE = 23
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('key', p.UnicodeType, 0),
@@ -12,4 +18,21 @@ class CipherKeyValue(p.MessageType):
         6: ('ask_on_decrypt', p.BoolType, 0),
         7: ('iv', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 23
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        key: str = None,
+        value: bytes = None,
+        encrypt: bool = None,
+        ask_on_encrypt: bool = None,
+        ask_on_decrypt: bool = None,
+        iv: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.key = key
+        self.value = value
+        self.encrypt = encrypt
+        self.ask_on_encrypt = ask_on_encrypt
+        self.ask_on_decrypt = ask_on_decrypt
+        self.iv = iv
diff --git a/trezorlib/messages/CipheredKeyValue.py b/trezorlib/messages/CipheredKeyValue.py
index 3db46014e..d1abf63f6 100644
--- a/trezorlib/messages/CipheredKeyValue.py
+++ b/trezorlib/messages/CipheredKeyValue.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class CipheredKeyValue(p.MessageType):
+    MESSAGE_WIRE_TYPE = 48
     FIELDS = {
         1: ('value', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 48
+
+    def __init__(
+        self,
+        value: bytes = None
+    ) -> None:
+        self.value = value
diff --git a/trezorlib/messages/CoinType.py b/trezorlib/messages/CoinType.py
index 7fcd9aaf1..e106d4d4f 100644
--- a/trezorlib/messages/CoinType.py
+++ b/trezorlib/messages/CoinType.py
@@ -16,3 +16,29 @@ class CoinType(p.MessageType):
         12: ('forkid', p.UVarintType, 0),
         13: ('force_bip143', p.BoolType, 0),
     }
+
+    def __init__(
+        self,
+        coin_name: str = None,
+        coin_shortcut: str = None,
+        address_type: int = None,
+        maxfee_kb: int = None,
+        address_type_p2sh: int = None,
+        signed_message_header: str = None,
+        xpub_magic: int = None,
+        xprv_magic: int = None,
+        segwit: bool = None,
+        forkid: int = None,
+        force_bip143: bool = None
+    ) -> None:
+        self.coin_name = coin_name
+        self.coin_shortcut = coin_shortcut
+        self.address_type = address_type
+        self.maxfee_kb = maxfee_kb
+        self.address_type_p2sh = address_type_p2sh
+        self.signed_message_header = signed_message_header
+        self.xpub_magic = xpub_magic
+        self.xprv_magic = xprv_magic
+        self.segwit = segwit
+        self.forkid = forkid
+        self.force_bip143 = force_bip143
diff --git a/trezorlib/messages/CosiCommit.py b/trezorlib/messages/CosiCommit.py
index ac8b318aa..96e3839ab 100644
--- a/trezorlib/messages/CosiCommit.py
+++ b/trezorlib/messages/CosiCommit.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class CosiCommit(p.MessageType):
+    MESSAGE_WIRE_TYPE = 71
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('data', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 71
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        data: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.data = data
diff --git a/trezorlib/messages/CosiCommitment.py b/trezorlib/messages/CosiCommitment.py
index 652319f13..d87fa529e 100644
--- a/trezorlib/messages/CosiCommitment.py
+++ b/trezorlib/messages/CosiCommitment.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class CosiCommitment(p.MessageType):
+    MESSAGE_WIRE_TYPE = 72
     FIELDS = {
         1: ('commitment', p.BytesType, 0),
         2: ('pubkey', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 72
+
+    def __init__(
+        self,
+        commitment: bytes = None,
+        pubkey: bytes = None
+    ) -> None:
+        self.commitment = commitment
+        self.pubkey = pubkey
diff --git a/trezorlib/messages/CosiSign.py b/trezorlib/messages/CosiSign.py
index 78a6996b5..5db336de3 100644
--- a/trezorlib/messages/CosiSign.py
+++ b/trezorlib/messages/CosiSign.py
@@ -1,12 +1,29 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class CosiSign(p.MessageType):
+    MESSAGE_WIRE_TYPE = 73
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('data', p.BytesType, 0),
         3: ('global_commitment', p.BytesType, 0),
         4: ('global_pubkey', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 73
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        data: bytes = None,
+        global_commitment: bytes = None,
+        global_pubkey: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.data = data
+        self.global_commitment = global_commitment
+        self.global_pubkey = global_pubkey
diff --git a/trezorlib/messages/CosiSignature.py b/trezorlib/messages/CosiSignature.py
index 371616522..e2a585a19 100644
--- a/trezorlib/messages/CosiSignature.py
+++ b/trezorlib/messages/CosiSignature.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class CosiSignature(p.MessageType):
+    MESSAGE_WIRE_TYPE = 74
     FIELDS = {
         1: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 74
+
+    def __init__(
+        self,
+        signature: bytes = None
+    ) -> None:
+        self.signature = signature
diff --git a/trezorlib/messages/DebugLinkDecision.py b/trezorlib/messages/DebugLinkDecision.py
index e5016f304..de262c0a6 100644
--- a/trezorlib/messages/DebugLinkDecision.py
+++ b/trezorlib/messages/DebugLinkDecision.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class DebugLinkDecision(p.MessageType):
+    MESSAGE_WIRE_TYPE = 100
     FIELDS = {
         1: ('yes_no', p.BoolType, 0),
         2: ('up_down', p.BoolType, 0),
         3: ('input', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 100
+
+    def __init__(
+        self,
+        yes_no: bool = None,
+        up_down: bool = None,
+        input: str = None
+    ) -> None:
+        self.yes_no = yes_no
+        self.up_down = up_down
+        self.input = input
diff --git a/trezorlib/messages/DebugLinkFlashErase.py b/trezorlib/messages/DebugLinkFlashErase.py
index 405443a01..21d48c8c6 100644
--- a/trezorlib/messages/DebugLinkFlashErase.py
+++ b/trezorlib/messages/DebugLinkFlashErase.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class DebugLinkFlashErase(p.MessageType):
+    MESSAGE_WIRE_TYPE = 113
     FIELDS = {
         1: ('sector', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 113
+
+    def __init__(
+        self,
+        sector: int = None
+    ) -> None:
+        self.sector = sector
diff --git a/trezorlib/messages/DebugLinkLog.py b/trezorlib/messages/DebugLinkLog.py
index 5ab46fa19..da6435bfc 100644
--- a/trezorlib/messages/DebugLinkLog.py
+++ b/trezorlib/messages/DebugLinkLog.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class DebugLinkLog(p.MessageType):
+    MESSAGE_WIRE_TYPE = 104
     FIELDS = {
         1: ('level', p.UVarintType, 0),
         2: ('bucket', p.UnicodeType, 0),
         3: ('text', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 104
+
+    def __init__(
+        self,
+        level: int = None,
+        bucket: str = None,
+        text: str = None
+    ) -> None:
+        self.level = level
+        self.bucket = bucket
+        self.text = text
diff --git a/trezorlib/messages/DebugLinkMemory.py b/trezorlib/messages/DebugLinkMemory.py
index 5ef79e57f..9f6ae8b9f 100644
--- a/trezorlib/messages/DebugLinkMemory.py
+++ b/trezorlib/messages/DebugLinkMemory.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class DebugLinkMemory(p.MessageType):
+    MESSAGE_WIRE_TYPE = 111
     FIELDS = {
         1: ('memory', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 111
+
+    def __init__(
+        self,
+        memory: bytes = None
+    ) -> None:
+        self.memory = memory
diff --git a/trezorlib/messages/DebugLinkMemoryRead.py b/trezorlib/messages/DebugLinkMemoryRead.py
index b2ebb2574..57fc4a037 100644
--- a/trezorlib/messages/DebugLinkMemoryRead.py
+++ b/trezorlib/messages/DebugLinkMemoryRead.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class DebugLinkMemoryRead(p.MessageType):
+    MESSAGE_WIRE_TYPE = 110
     FIELDS = {
         1: ('address', p.UVarintType, 0),
         2: ('length', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 110
+
+    def __init__(
+        self,
+        address: int = None,
+        length: int = None
+    ) -> None:
+        self.address = address
+        self.length = length
diff --git a/trezorlib/messages/DebugLinkMemoryWrite.py b/trezorlib/messages/DebugLinkMemoryWrite.py
index 3b7265267..456bac235 100644
--- a/trezorlib/messages/DebugLinkMemoryWrite.py
+++ b/trezorlib/messages/DebugLinkMemoryWrite.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class DebugLinkMemoryWrite(p.MessageType):
+    MESSAGE_WIRE_TYPE = 112
     FIELDS = {
         1: ('address', p.UVarintType, 0),
         2: ('memory', p.BytesType, 0),
         3: ('flash', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 112
+
+    def __init__(
+        self,
+        address: int = None,
+        memory: bytes = None,
+        flash: bool = None
+    ) -> None:
+        self.address = address
+        self.memory = memory
+        self.flash = flash
diff --git a/trezorlib/messages/DebugLinkState.py b/trezorlib/messages/DebugLinkState.py
index ef671619e..9b8ce3810 100644
--- a/trezorlib/messages/DebugLinkState.py
+++ b/trezorlib/messages/DebugLinkState.py
@@ -4,6 +4,7 @@ from .HDNodeType import HDNodeType
 
 
 class DebugLinkState(p.MessageType):
+    MESSAGE_WIRE_TYPE = 102
     FIELDS = {
         1: ('layout', p.BytesType, 0),
         2: ('pin', p.UnicodeType, 0),
@@ -17,4 +18,29 @@ class DebugLinkState(p.MessageType):
         10: ('recovery_word_pos', p.UVarintType, 0),
         11: ('reset_word_pos', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 102
+
+    def __init__(
+        self,
+        layout: bytes = None,
+        pin: str = None,
+        matrix: str = None,
+        mnemonic: str = None,
+        node: HDNodeType = None,
+        passphrase_protection: bool = None,
+        reset_word: str = None,
+        reset_entropy: bytes = None,
+        recovery_fake_word: str = None,
+        recovery_word_pos: int = None,
+        reset_word_pos: int = None
+    ) -> None:
+        self.layout = layout
+        self.pin = pin
+        self.matrix = matrix
+        self.mnemonic = mnemonic
+        self.node = node
+        self.passphrase_protection = passphrase_protection
+        self.reset_word = reset_word
+        self.reset_entropy = reset_entropy
+        self.recovery_fake_word = recovery_fake_word
+        self.recovery_word_pos = recovery_word_pos
+        self.reset_word_pos = reset_word_pos
diff --git a/trezorlib/messages/DecryptMessage.py b/trezorlib/messages/DecryptMessage.py
index f37d679a0..5d72b25d1 100644
--- a/trezorlib/messages/DecryptMessage.py
+++ b/trezorlib/messages/DecryptMessage.py
@@ -1,12 +1,29 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class DecryptMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 51
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('nonce', p.BytesType, 0),
         3: ('message', p.BytesType, 0),
         4: ('hmac', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 51
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        nonce: bytes = None,
+        message: bytes = None,
+        hmac: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.nonce = nonce
+        self.message = message
+        self.hmac = hmac
diff --git a/trezorlib/messages/DecryptedMessage.py b/trezorlib/messages/DecryptedMessage.py
index d8917295c..f62386da2 100644
--- a/trezorlib/messages/DecryptedMessage.py
+++ b/trezorlib/messages/DecryptedMessage.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class DecryptedMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 52
     FIELDS = {
         1: ('message', p.BytesType, 0),
         2: ('address', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 52
+
+    def __init__(
+        self,
+        message: bytes = None,
+        address: str = None
+    ) -> None:
+        self.message = message
+        self.address = address
diff --git a/trezorlib/messages/ECDHSessionKey.py b/trezorlib/messages/ECDHSessionKey.py
index aa8cc8272..79c41e020 100644
--- a/trezorlib/messages/ECDHSessionKey.py
+++ b/trezorlib/messages/ECDHSessionKey.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class ECDHSessionKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 62
     FIELDS = {
         1: ('session_key', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 62
+
+    def __init__(
+        self,
+        session_key: bytes = None
+    ) -> None:
+        self.session_key = session_key
diff --git a/trezorlib/messages/EncryptMessage.py b/trezorlib/messages/EncryptMessage.py
index 1be5c963b..e96e54b27 100644
--- a/trezorlib/messages/EncryptMessage.py
+++ b/trezorlib/messages/EncryptMessage.py
@@ -1,8 +1,14 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class EncryptMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 49
     FIELDS = {
         1: ('pubkey', p.BytesType, 0),
         2: ('message', p.BytesType, 0),
@@ -10,4 +16,17 @@ class EncryptMessage(p.MessageType):
         4: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         5: ('coin_name', p.UnicodeType, 0),  # default='Bitcoin'
     }
-    MESSAGE_WIRE_TYPE = 49
+
+    def __init__(
+        self,
+        pubkey: bytes = None,
+        message: bytes = None,
+        display_only: bool = None,
+        address_n: List[int] = None,
+        coin_name: str = None
+    ) -> None:
+        self.pubkey = pubkey
+        self.message = message
+        self.display_only = display_only
+        self.address_n = address_n if address_n is not None else []
+        self.coin_name = coin_name
diff --git a/trezorlib/messages/EncryptedMessage.py b/trezorlib/messages/EncryptedMessage.py
index 131a35637..d52d3c953 100644
--- a/trezorlib/messages/EncryptedMessage.py
+++ b/trezorlib/messages/EncryptedMessage.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class EncryptedMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 50
     FIELDS = {
         1: ('nonce', p.BytesType, 0),
         2: ('message', p.BytesType, 0),
         3: ('hmac', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 50
+
+    def __init__(
+        self,
+        nonce: bytes = None,
+        message: bytes = None,
+        hmac: bytes = None
+    ) -> None:
+        self.nonce = nonce
+        self.message = message
+        self.hmac = hmac
diff --git a/trezorlib/messages/Entropy.py b/trezorlib/messages/Entropy.py
index 0a828f952..bdc314c90 100644
--- a/trezorlib/messages/Entropy.py
+++ b/trezorlib/messages/Entropy.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class Entropy(p.MessageType):
+    MESSAGE_WIRE_TYPE = 10
     FIELDS = {
         1: ('entropy', p.BytesType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 10
+
+    def __init__(
+        self,
+        entropy: bytes = None
+    ) -> None:
+        self.entropy = entropy
diff --git a/trezorlib/messages/EntropyAck.py b/trezorlib/messages/EntropyAck.py
index 2050865c7..19afa8e15 100644
--- a/trezorlib/messages/EntropyAck.py
+++ b/trezorlib/messages/EntropyAck.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class EntropyAck(p.MessageType):
+    MESSAGE_WIRE_TYPE = 36
     FIELDS = {
         1: ('entropy', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 36
+
+    def __init__(
+        self,
+        entropy: bytes = None
+    ) -> None:
+        self.entropy = entropy
diff --git a/trezorlib/messages/EstimateTxSize.py b/trezorlib/messages/EstimateTxSize.py
index 889ca9f23..34e2ec125 100644
--- a/trezorlib/messages/EstimateTxSize.py
+++ b/trezorlib/messages/EstimateTxSize.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class EstimateTxSize(p.MessageType):
+    MESSAGE_WIRE_TYPE = 43
     FIELDS = {
         1: ('outputs_count', p.UVarintType, 0),  # required
         2: ('inputs_count', p.UVarintType, 0),  # required
         3: ('coin_name', p.UnicodeType, 0),  # default='Bitcoin'
     }
-    MESSAGE_WIRE_TYPE = 43
+
+    def __init__(
+        self,
+        outputs_count: int = None,
+        inputs_count: int = None,
+        coin_name: str = None
+    ) -> None:
+        self.outputs_count = outputs_count
+        self.inputs_count = inputs_count
+        self.coin_name = coin_name
diff --git a/trezorlib/messages/EthereumAddress.py b/trezorlib/messages/EthereumAddress.py
index 1a1e9962a..1363aa5ba 100644
--- a/trezorlib/messages/EthereumAddress.py
+++ b/trezorlib/messages/EthereumAddress.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class EthereumAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 57
     FIELDS = {
         1: ('address', p.BytesType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 57
+
+    def __init__(
+        self,
+        address: bytes = None
+    ) -> None:
+        self.address = address
diff --git a/trezorlib/messages/EthereumGetAddress.py b/trezorlib/messages/EthereumGetAddress.py
index 99a655191..14e9c3b5d 100644
--- a/trezorlib/messages/EthereumGetAddress.py
+++ b/trezorlib/messages/EthereumGetAddress.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class EthereumGetAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 56
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('show_display', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 56
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        show_display: bool = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.show_display = show_display
diff --git a/trezorlib/messages/EthereumMessageSignature.py b/trezorlib/messages/EthereumMessageSignature.py
index ff0923865..31ebe1e14 100644
--- a/trezorlib/messages/EthereumMessageSignature.py
+++ b/trezorlib/messages/EthereumMessageSignature.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class EthereumMessageSignature(p.MessageType):
+    MESSAGE_WIRE_TYPE = 66
     FIELDS = {
         1: ('address', p.BytesType, 0),
         2: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 66
+
+    def __init__(
+        self,
+        address: bytes = None,
+        signature: bytes = None
+    ) -> None:
+        self.address = address
+        self.signature = signature
diff --git a/trezorlib/messages/EthereumSignMessage.py b/trezorlib/messages/EthereumSignMessage.py
index 09dfbe8a9..cda682cd9 100644
--- a/trezorlib/messages/EthereumSignMessage.py
+++ b/trezorlib/messages/EthereumSignMessage.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class EthereumSignMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 64
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('message', p.BytesType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 64
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        message: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.message = message
diff --git a/trezorlib/messages/EthereumSignTx.py b/trezorlib/messages/EthereumSignTx.py
index 92426c41c..c16cff198 100644
--- a/trezorlib/messages/EthereumSignTx.py
+++ b/trezorlib/messages/EthereumSignTx.py
@@ -1,8 +1,14 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class EthereumSignTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 58
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('nonce', p.BytesType, 0),
@@ -15,4 +21,27 @@ class EthereumSignTx(p.MessageType):
         9: ('chain_id', p.UVarintType, 0),
         10: ('tx_type', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 58
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        nonce: bytes = None,
+        gas_price: bytes = None,
+        gas_limit: bytes = None,
+        to: bytes = None,
+        value: bytes = None,
+        data_initial_chunk: bytes = None,
+        data_length: int = None,
+        chain_id: int = None,
+        tx_type: int = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.nonce = nonce
+        self.gas_price = gas_price
+        self.gas_limit = gas_limit
+        self.to = to
+        self.value = value
+        self.data_initial_chunk = data_initial_chunk
+        self.data_length = data_length
+        self.chain_id = chain_id
+        self.tx_type = tx_type
diff --git a/trezorlib/messages/EthereumTxAck.py b/trezorlib/messages/EthereumTxAck.py
index 9a6b62d86..4ab80993e 100644
--- a/trezorlib/messages/EthereumTxAck.py
+++ b/trezorlib/messages/EthereumTxAck.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class EthereumTxAck(p.MessageType):
+    MESSAGE_WIRE_TYPE = 60
     FIELDS = {
         1: ('data_chunk', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 60
+
+    def __init__(
+        self,
+        data_chunk: bytes = None
+    ) -> None:
+        self.data_chunk = data_chunk
diff --git a/trezorlib/messages/EthereumTxRequest.py b/trezorlib/messages/EthereumTxRequest.py
index e4c59cfe4..39d5a8c94 100644
--- a/trezorlib/messages/EthereumTxRequest.py
+++ b/trezorlib/messages/EthereumTxRequest.py
@@ -3,10 +3,22 @@ from .. import protobuf as p
 
 
 class EthereumTxRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 59
     FIELDS = {
         1: ('data_length', p.UVarintType, 0),
         2: ('signature_v', p.UVarintType, 0),
         3: ('signature_r', p.BytesType, 0),
         4: ('signature_s', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 59
+
+    def __init__(
+        self,
+        data_length: int = None,
+        signature_v: int = None,
+        signature_r: bytes = None,
+        signature_s: bytes = None
+    ) -> None:
+        self.data_length = data_length
+        self.signature_v = signature_v
+        self.signature_r = signature_r
+        self.signature_s = signature_s
diff --git a/trezorlib/messages/EthereumVerifyMessage.py b/trezorlib/messages/EthereumVerifyMessage.py
index 25481338f..07b62be76 100644
--- a/trezorlib/messages/EthereumVerifyMessage.py
+++ b/trezorlib/messages/EthereumVerifyMessage.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class EthereumVerifyMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 65
     FIELDS = {
         1: ('address', p.BytesType, 0),
         2: ('signature', p.BytesType, 0),
         3: ('message', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 65
+
+    def __init__(
+        self,
+        address: bytes = None,
+        signature: bytes = None,
+        message: bytes = None
+    ) -> None:
+        self.address = address
+        self.signature = signature
+        self.message = message
diff --git a/trezorlib/messages/Failure.py b/trezorlib/messages/Failure.py
index 9a752029a..a3a6b4662 100644
--- a/trezorlib/messages/Failure.py
+++ b/trezorlib/messages/Failure.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class Failure(p.MessageType):
+    MESSAGE_WIRE_TYPE = 3
     FIELDS = {
         1: ('code', p.UVarintType, 0),
         2: ('message', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 3
+
+    def __init__(
+        self,
+        code: int = None,
+        message: str = None
+    ) -> None:
+        self.code = code
+        self.message = message
diff --git a/trezorlib/messages/Features.py b/trezorlib/messages/Features.py
index d1eaaa39a..f63de42fe 100644
--- a/trezorlib/messages/Features.py
+++ b/trezorlib/messages/Features.py
@@ -1,9 +1,15 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .CoinType import CoinType
 
 
 class Features(p.MessageType):
+    MESSAGE_WIRE_TYPE = 17
     FIELDS = {
         1: ('vendor', p.UnicodeType, 0),
         2: ('major_version', p.UVarintType, 0),
@@ -33,4 +39,61 @@ class Features(p.MessageType):
         26: ('fw_vendor_keys', p.BytesType, 0),
         27: ('unfinished_backup', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 17
+
+    def __init__(
+        self,
+        vendor: str = None,
+        major_version: int = None,
+        minor_version: int = None,
+        patch_version: int = None,
+        bootloader_mode: bool = None,
+        device_id: str = None,
+        pin_protection: bool = None,
+        passphrase_protection: bool = None,
+        language: str = None,
+        label: str = None,
+        coins: List[CoinType] = None,
+        initialized: bool = None,
+        revision: bytes = None,
+        bootloader_hash: bytes = None,
+        imported: bool = None,
+        pin_cached: bool = None,
+        passphrase_cached: bool = None,
+        firmware_present: bool = None,
+        needs_backup: bool = None,
+        flags: int = None,
+        model: str = None,
+        fw_major: int = None,
+        fw_minor: int = None,
+        fw_patch: int = None,
+        fw_vendor: str = None,
+        fw_vendor_keys: bytes = None,
+        unfinished_backup: bool = None
+    ) -> None:
+        self.vendor = vendor
+        self.major_version = major_version
+        self.minor_version = minor_version
+        self.patch_version = patch_version
+        self.bootloader_mode = bootloader_mode
+        self.device_id = device_id
+        self.pin_protection = pin_protection
+        self.passphrase_protection = passphrase_protection
+        self.language = language
+        self.label = label
+        self.coins = coins if coins is not None else []
+        self.initialized = initialized
+        self.revision = revision
+        self.bootloader_hash = bootloader_hash
+        self.imported = imported
+        self.pin_cached = pin_cached
+        self.passphrase_cached = passphrase_cached
+        self.firmware_present = firmware_present
+        self.needs_backup = needs_backup
+        self.flags = flags
+        self.model = model
+        self.fw_major = fw_major
+        self.fw_minor = fw_minor
+        self.fw_patch = fw_patch
+        self.fw_vendor = fw_vendor
+        self.fw_vendor_keys = fw_vendor_keys
+        self.unfinished_backup = unfinished_backup
diff --git a/trezorlib/messages/FirmwareErase.py b/trezorlib/messages/FirmwareErase.py
index 7971b7583..a59e24482 100644
--- a/trezorlib/messages/FirmwareErase.py
+++ b/trezorlib/messages/FirmwareErase.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class FirmwareErase(p.MessageType):
+    MESSAGE_WIRE_TYPE = 6
     FIELDS = {
         1: ('length', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 6
+
+    def __init__(
+        self,
+        length: int = None
+    ) -> None:
+        self.length = length
diff --git a/trezorlib/messages/FirmwareRequest.py b/trezorlib/messages/FirmwareRequest.py
index cb766771b..8d0319ebf 100644
--- a/trezorlib/messages/FirmwareRequest.py
+++ b/trezorlib/messages/FirmwareRequest.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class FirmwareRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 8
     FIELDS = {
         1: ('offset', p.UVarintType, 0),
         2: ('length', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 8
+
+    def __init__(
+        self,
+        offset: int = None,
+        length: int = None
+    ) -> None:
+        self.offset = offset
+        self.length = length
diff --git a/trezorlib/messages/FirmwareUpload.py b/trezorlib/messages/FirmwareUpload.py
index 3c726a76b..287f8b7de 100644
--- a/trezorlib/messages/FirmwareUpload.py
+++ b/trezorlib/messages/FirmwareUpload.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class FirmwareUpload(p.MessageType):
+    MESSAGE_WIRE_TYPE = 7
     FIELDS = {
         1: ('payload', p.BytesType, 0),  # required
         2: ('hash', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 7
+
+    def __init__(
+        self,
+        payload: bytes = None,
+        hash: bytes = None
+    ) -> None:
+        self.payload = payload
+        self.hash = hash
diff --git a/trezorlib/messages/GetAddress.py b/trezorlib/messages/GetAddress.py
index a0dd174fa..997544e5f 100644
--- a/trezorlib/messages/GetAddress.py
+++ b/trezorlib/messages/GetAddress.py
@@ -1,9 +1,15 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .MultisigRedeemScriptType import MultisigRedeemScriptType
 
 
 class GetAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 29
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('coin_name', p.UnicodeType, 0),  # default='Bitcoin'
@@ -11,4 +17,17 @@ class GetAddress(p.MessageType):
         4: ('multisig', MultisigRedeemScriptType, 0),
         5: ('script_type', p.UVarintType, 0),  # default=0
     }
-    MESSAGE_WIRE_TYPE = 29
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        coin_name: str = None,
+        show_display: bool = None,
+        multisig: MultisigRedeemScriptType = None,
+        script_type: int = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.coin_name = coin_name
+        self.show_display = show_display
+        self.multisig = multisig
+        self.script_type = script_type
diff --git a/trezorlib/messages/GetECDHSessionKey.py b/trezorlib/messages/GetECDHSessionKey.py
index e9f943997..53835f00c 100644
--- a/trezorlib/messages/GetECDHSessionKey.py
+++ b/trezorlib/messages/GetECDHSessionKey.py
@@ -4,9 +4,19 @@ from .IdentityType import IdentityType
 
 
 class GetECDHSessionKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 61
     FIELDS = {
         1: ('identity', IdentityType, 0),
         2: ('peer_public_key', p.BytesType, 0),
         3: ('ecdsa_curve_name', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 61
+
+    def __init__(
+        self,
+        identity: IdentityType = None,
+        peer_public_key: bytes = None,
+        ecdsa_curve_name: str = None
+    ) -> None:
+        self.identity = identity
+        self.peer_public_key = peer_public_key
+        self.ecdsa_curve_name = ecdsa_curve_name
diff --git a/trezorlib/messages/GetEntropy.py b/trezorlib/messages/GetEntropy.py
index e16043b69..1606bbfc7 100644
--- a/trezorlib/messages/GetEntropy.py
+++ b/trezorlib/messages/GetEntropy.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class GetEntropy(p.MessageType):
+    MESSAGE_WIRE_TYPE = 9
     FIELDS = {
         1: ('size', p.UVarintType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 9
+
+    def __init__(
+        self,
+        size: int = None
+    ) -> None:
+        self.size = size
diff --git a/trezorlib/messages/GetPublicKey.py b/trezorlib/messages/GetPublicKey.py
index b89881aa5..40af6facc 100644
--- a/trezorlib/messages/GetPublicKey.py
+++ b/trezorlib/messages/GetPublicKey.py
@@ -1,12 +1,29 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class GetPublicKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 11
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('ecdsa_curve_name', p.UnicodeType, 0),
         3: ('show_display', p.BoolType, 0),
         4: ('coin_name', p.UnicodeType, 0),  # default='Bitcoin'
     }
-    MESSAGE_WIRE_TYPE = 11
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        ecdsa_curve_name: str = None,
+        show_display: bool = None,
+        coin_name: str = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.ecdsa_curve_name = ecdsa_curve_name
+        self.show_display = show_display
+        self.coin_name = coin_name
diff --git a/trezorlib/messages/HDNodePathType.py b/trezorlib/messages/HDNodePathType.py
index 720d41c3d..54a45e535 100644
--- a/trezorlib/messages/HDNodePathType.py
+++ b/trezorlib/messages/HDNodePathType.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .HDNodeType import HDNodeType
 
 
@@ -8,3 +13,11 @@ class HDNodePathType(p.MessageType):
         1: ('node', HDNodeType, 0),  # required
         2: ('address_n', p.UVarintType, p.FLAG_REPEATED),
     }
+
+    def __init__(
+        self,
+        node: HDNodeType = None,
+        address_n: List[int] = None
+    ) -> None:
+        self.node = node
+        self.address_n = address_n if address_n is not None else []
diff --git a/trezorlib/messages/HDNodeType.py b/trezorlib/messages/HDNodeType.py
index 5bd2ed08b..082dd7f32 100644
--- a/trezorlib/messages/HDNodeType.py
+++ b/trezorlib/messages/HDNodeType.py
@@ -11,3 +11,19 @@ class HDNodeType(p.MessageType):
         5: ('private_key', p.BytesType, 0),
         6: ('public_key', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        depth: int = None,
+        fingerprint: int = None,
+        child_num: int = None,
+        chain_code: bytes = None,
+        private_key: bytes = None,
+        public_key: bytes = None
+    ) -> None:
+        self.depth = depth
+        self.fingerprint = fingerprint
+        self.child_num = child_num
+        self.chain_code = chain_code
+        self.private_key = private_key
+        self.public_key = public_key
diff --git a/trezorlib/messages/IdentityType.py b/trezorlib/messages/IdentityType.py
index e571d603b..93c4fcf41 100644
--- a/trezorlib/messages/IdentityType.py
+++ b/trezorlib/messages/IdentityType.py
@@ -11,3 +11,19 @@ class IdentityType(p.MessageType):
         5: ('path', p.UnicodeType, 0),
         6: ('index', p.UVarintType, 0),  # default=0
     }
+
+    def __init__(
+        self,
+        proto: str = None,
+        user: str = None,
+        host: str = None,
+        port: str = None,
+        path: str = None,
+        index: int = None
+    ) -> None:
+        self.proto = proto
+        self.user = user
+        self.host = host
+        self.port = port
+        self.path = path
+        self.index = index
diff --git a/trezorlib/messages/Initialize.py b/trezorlib/messages/Initialize.py
index 7c816093a..38e35ec73 100644
--- a/trezorlib/messages/Initialize.py
+++ b/trezorlib/messages/Initialize.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class Initialize(p.MessageType):
+    MESSAGE_WIRE_TYPE = 0
     FIELDS = {
         1: ('state', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 0
+
+    def __init__(
+        self,
+        state: bytes = None
+    ) -> None:
+        self.state = state
diff --git a/trezorlib/messages/LiskAddress.py b/trezorlib/messages/LiskAddress.py
index a565239fe..d071c950f 100644
--- a/trezorlib/messages/LiskAddress.py
+++ b/trezorlib/messages/LiskAddress.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class LiskAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 115
     FIELDS = {
         1: ('address', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 115
+
+    def __init__(
+        self,
+        address: str = None
+    ) -> None:
+        self.address = address
diff --git a/trezorlib/messages/LiskDelegateType.py b/trezorlib/messages/LiskDelegateType.py
index 4afce0a22..741727b42 100644
--- a/trezorlib/messages/LiskDelegateType.py
+++ b/trezorlib/messages/LiskDelegateType.py
@@ -6,3 +6,9 @@ class LiskDelegateType(p.MessageType):
     FIELDS = {
         1: ('username', p.UnicodeType, 0),
     }
+
+    def __init__(
+        self,
+        username: str = None
+    ) -> None:
+        self.username = username
diff --git a/trezorlib/messages/LiskGetAddress.py b/trezorlib/messages/LiskGetAddress.py
index e9d0b3fe5..35078057b 100644
--- a/trezorlib/messages/LiskGetAddress.py
+++ b/trezorlib/messages/LiskGetAddress.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class LiskGetAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 114
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('show_display', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 114
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        show_display: bool = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.show_display = show_display
diff --git a/trezorlib/messages/LiskGetPublicKey.py b/trezorlib/messages/LiskGetPublicKey.py
index bb6e30f91..8cd355c03 100644
--- a/trezorlib/messages/LiskGetPublicKey.py
+++ b/trezorlib/messages/LiskGetPublicKey.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class LiskGetPublicKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 121
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('show_display', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 121
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        show_display: bool = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.show_display = show_display
diff --git a/trezorlib/messages/LiskMessageSignature.py b/trezorlib/messages/LiskMessageSignature.py
index 46e7fc610..b16145838 100644
--- a/trezorlib/messages/LiskMessageSignature.py
+++ b/trezorlib/messages/LiskMessageSignature.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class LiskMessageSignature(p.MessageType):
+    MESSAGE_WIRE_TYPE = 119
     FIELDS = {
         1: ('address', p.UnicodeType, 0),
         2: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 119
+
+    def __init__(
+        self,
+        address: str = None,
+        signature: bytes = None
+    ) -> None:
+        self.address = address
+        self.signature = signature
diff --git a/trezorlib/messages/LiskMultisignatureType.py b/trezorlib/messages/LiskMultisignatureType.py
index 223cd96ce..18363c875 100644
--- a/trezorlib/messages/LiskMultisignatureType.py
+++ b/trezorlib/messages/LiskMultisignatureType.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class LiskMultisignatureType(p.MessageType):
@@ -8,3 +13,13 @@ class LiskMultisignatureType(p.MessageType):
         2: ('life_time', p.UVarintType, 0),
         3: ('keys_group', p.UnicodeType, p.FLAG_REPEATED),
     }
+
+    def __init__(
+        self,
+        min: int = None,
+        life_time: int = None,
+        keys_group: List[str] = None
+    ) -> None:
+        self.min = min
+        self.life_time = life_time
+        self.keys_group = keys_group if keys_group is not None else []
diff --git a/trezorlib/messages/LiskPublicKey.py b/trezorlib/messages/LiskPublicKey.py
index 87cea3149..67db3be2f 100644
--- a/trezorlib/messages/LiskPublicKey.py
+++ b/trezorlib/messages/LiskPublicKey.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class LiskPublicKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 122
     FIELDS = {
         1: ('public_key', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 122
+
+    def __init__(
+        self,
+        public_key: bytes = None
+    ) -> None:
+        self.public_key = public_key
diff --git a/trezorlib/messages/LiskSignMessage.py b/trezorlib/messages/LiskSignMessage.py
index 9049e0ac8..4194c8a6b 100644
--- a/trezorlib/messages/LiskSignMessage.py
+++ b/trezorlib/messages/LiskSignMessage.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class LiskSignMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 118
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('message', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 118
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        message: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.message = message
diff --git a/trezorlib/messages/LiskSignTx.py b/trezorlib/messages/LiskSignTx.py
index 972268a02..98587010f 100644
--- a/trezorlib/messages/LiskSignTx.py
+++ b/trezorlib/messages/LiskSignTx.py
@@ -1,11 +1,24 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .LiskTransactionCommon import LiskTransactionCommon
 
 
 class LiskSignTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 116
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('transaction', LiskTransactionCommon, 0),
     }
-    MESSAGE_WIRE_TYPE = 116
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        transaction: LiskTransactionCommon = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.transaction = transaction
diff --git a/trezorlib/messages/LiskSignatureType.py b/trezorlib/messages/LiskSignatureType.py
index b2c8322d8..7ca584231 100644
--- a/trezorlib/messages/LiskSignatureType.py
+++ b/trezorlib/messages/LiskSignatureType.py
@@ -6,3 +6,9 @@ class LiskSignatureType(p.MessageType):
     FIELDS = {
         1: ('public_key', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        public_key: bytes = None
+    ) -> None:
+        self.public_key = public_key
diff --git a/trezorlib/messages/LiskSignedTx.py b/trezorlib/messages/LiskSignedTx.py
index 271349ad5..df0d46d12 100644
--- a/trezorlib/messages/LiskSignedTx.py
+++ b/trezorlib/messages/LiskSignedTx.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class LiskSignedTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 117
     FIELDS = {
         1: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 117
+
+    def __init__(
+        self,
+        signature: bytes = None
+    ) -> None:
+        self.signature = signature
diff --git a/trezorlib/messages/LiskTransactionAsset.py b/trezorlib/messages/LiskTransactionAsset.py
index 1b924a78e..15170de1e 100644
--- a/trezorlib/messages/LiskTransactionAsset.py
+++ b/trezorlib/messages/LiskTransactionAsset.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .LiskDelegateType import LiskDelegateType
 from .LiskMultisignatureType import LiskMultisignatureType
 from .LiskSignatureType import LiskSignatureType
@@ -13,3 +18,17 @@ class LiskTransactionAsset(p.MessageType):
         4: ('multisignature', LiskMultisignatureType, 0),
         5: ('data', p.UnicodeType, 0),
     }
+
+    def __init__(
+        self,
+        signature: LiskSignatureType = None,
+        delegate: LiskDelegateType = None,
+        votes: List[str] = None,
+        multisignature: LiskMultisignatureType = None,
+        data: str = None
+    ) -> None:
+        self.signature = signature
+        self.delegate = delegate
+        self.votes = votes if votes is not None else []
+        self.multisignature = multisignature
+        self.data = data
diff --git a/trezorlib/messages/LiskTransactionCommon.py b/trezorlib/messages/LiskTransactionCommon.py
index 159a50a53..0d3fa494b 100644
--- a/trezorlib/messages/LiskTransactionCommon.py
+++ b/trezorlib/messages/LiskTransactionCommon.py
@@ -15,3 +15,25 @@ class LiskTransactionCommon(p.MessageType):
         8: ('timestamp', p.UVarintType, 0),
         9: ('asset', LiskTransactionAsset, 0),
     }
+
+    def __init__(
+        self,
+        type: int = None,
+        amount: int = None,
+        fee: int = None,
+        recipient_id: str = None,
+        sender_public_key: bytes = None,
+        requester_public_key: bytes = None,
+        signature: bytes = None,
+        timestamp: int = None,
+        asset: LiskTransactionAsset = None
+    ) -> None:
+        self.type = type
+        self.amount = amount
+        self.fee = fee
+        self.recipient_id = recipient_id
+        self.sender_public_key = sender_public_key
+        self.requester_public_key = requester_public_key
+        self.signature = signature
+        self.timestamp = timestamp
+        self.asset = asset
diff --git a/trezorlib/messages/LiskVerifyMessage.py b/trezorlib/messages/LiskVerifyMessage.py
index bbd144603..235ac3b0f 100644
--- a/trezorlib/messages/LiskVerifyMessage.py
+++ b/trezorlib/messages/LiskVerifyMessage.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class LiskVerifyMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 120
     FIELDS = {
         1: ('signature', p.BytesType, 0),
         2: ('public_key', p.BytesType, 0),
         3: ('message', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 120
+
+    def __init__(
+        self,
+        signature: bytes = None,
+        public_key: bytes = None,
+        message: bytes = None
+    ) -> None:
+        self.signature = signature
+        self.public_key = public_key
+        self.message = message
diff --git a/trezorlib/messages/LoadDevice.py b/trezorlib/messages/LoadDevice.py
index c5afb35b2..f12d77414 100644
--- a/trezorlib/messages/LoadDevice.py
+++ b/trezorlib/messages/LoadDevice.py
@@ -4,6 +4,7 @@ from .HDNodeType import HDNodeType
 
 
 class LoadDevice(p.MessageType):
+    MESSAGE_WIRE_TYPE = 13
     FIELDS = {
         1: ('mnemonic', p.UnicodeType, 0),
         2: ('node', HDNodeType, 0),
@@ -14,4 +15,23 @@ class LoadDevice(p.MessageType):
         7: ('skip_checksum', p.BoolType, 0),
         8: ('u2f_counter', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 13
+
+    def __init__(
+        self,
+        mnemonic: str = None,
+        node: HDNodeType = None,
+        pin: str = None,
+        passphrase_protection: bool = None,
+        language: str = None,
+        label: str = None,
+        skip_checksum: bool = None,
+        u2f_counter: int = None
+    ) -> None:
+        self.mnemonic = mnemonic
+        self.node = node
+        self.pin = pin
+        self.passphrase_protection = passphrase_protection
+        self.language = language
+        self.label = label
+        self.skip_checksum = skip_checksum
+        self.u2f_counter = u2f_counter
diff --git a/trezorlib/messages/MessageSignature.py b/trezorlib/messages/MessageSignature.py
index fc1cad58c..b2f3d585b 100644
--- a/trezorlib/messages/MessageSignature.py
+++ b/trezorlib/messages/MessageSignature.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class MessageSignature(p.MessageType):
+    MESSAGE_WIRE_TYPE = 40
     FIELDS = {
         1: ('address', p.UnicodeType, 0),
         2: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 40
+
+    def __init__(
+        self,
+        address: str = None,
+        signature: bytes = None
+    ) -> None:
+        self.address = address
+        self.signature = signature
diff --git a/trezorlib/messages/MultisigRedeemScriptType.py b/trezorlib/messages/MultisigRedeemScriptType.py
index e818448f5..6c2cfb4f0 100644
--- a/trezorlib/messages/MultisigRedeemScriptType.py
+++ b/trezorlib/messages/MultisigRedeemScriptType.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .HDNodePathType import HDNodePathType
 
 
@@ -9,3 +14,13 @@ class MultisigRedeemScriptType(p.MessageType):
         2: ('signatures', p.BytesType, p.FLAG_REPEATED),
         3: ('m', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        pubkeys: List[HDNodePathType] = None,
+        signatures: List[bytes] = None,
+        m: int = None
+    ) -> None:
+        self.pubkeys = pubkeys if pubkeys is not None else []
+        self.signatures = signatures if signatures is not None else []
+        self.m = m
diff --git a/trezorlib/messages/NEMAddress.py b/trezorlib/messages/NEMAddress.py
index 013b75db0..86452c87d 100644
--- a/trezorlib/messages/NEMAddress.py
+++ b/trezorlib/messages/NEMAddress.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class NEMAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 68
     FIELDS = {
         1: ('address', p.UnicodeType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 68
+
+    def __init__(
+        self,
+        address: str = None
+    ) -> None:
+        self.address = address
diff --git a/trezorlib/messages/NEMAggregateModification.py b/trezorlib/messages/NEMAggregateModification.py
index 16178e07a..dd08c9db8 100644
--- a/trezorlib/messages/NEMAggregateModification.py
+++ b/trezorlib/messages/NEMAggregateModification.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .NEMCosignatoryModification import NEMCosignatoryModification
 
 
@@ -8,3 +13,11 @@ class NEMAggregateModification(p.MessageType):
         1: ('modifications', NEMCosignatoryModification, p.FLAG_REPEATED),
         2: ('relative_change', p.SVarintType, 0),
     }
+
+    def __init__(
+        self,
+        modifications: List[NEMCosignatoryModification] = None,
+        relative_change: int = None
+    ) -> None:
+        self.modifications = modifications if modifications is not None else []
+        self.relative_change = relative_change
diff --git a/trezorlib/messages/NEMCosignatoryModification.py b/trezorlib/messages/NEMCosignatoryModification.py
index dda8789ea..e804b7ab8 100644
--- a/trezorlib/messages/NEMCosignatoryModification.py
+++ b/trezorlib/messages/NEMCosignatoryModification.py
@@ -7,3 +7,11 @@ class NEMCosignatoryModification(p.MessageType):
         1: ('type', p.UVarintType, 0),
         2: ('public_key', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        type: int = None,
+        public_key: bytes = None
+    ) -> None:
+        self.type = type
+        self.public_key = public_key
diff --git a/trezorlib/messages/NEMDecryptMessage.py b/trezorlib/messages/NEMDecryptMessage.py
index f077aaa42..7ec2c90b7 100644
--- a/trezorlib/messages/NEMDecryptMessage.py
+++ b/trezorlib/messages/NEMDecryptMessage.py
@@ -1,12 +1,29 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class NEMDecryptMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 75
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('network', p.UVarintType, 0),
         3: ('public_key', p.BytesType, 0),
         4: ('payload', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 75
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        network: int = None,
+        public_key: bytes = None,
+        payload: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.network = network
+        self.public_key = public_key
+        self.payload = payload
diff --git a/trezorlib/messages/NEMDecryptedMessage.py b/trezorlib/messages/NEMDecryptedMessage.py
index 551e773c7..a73ee6e2c 100644
--- a/trezorlib/messages/NEMDecryptedMessage.py
+++ b/trezorlib/messages/NEMDecryptedMessage.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class NEMDecryptedMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 76
     FIELDS = {
         1: ('payload', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 76
+
+    def __init__(
+        self,
+        payload: bytes = None
+    ) -> None:
+        self.payload = payload
diff --git a/trezorlib/messages/NEMGetAddress.py b/trezorlib/messages/NEMGetAddress.py
index 55d89e149..a3d94bd37 100644
--- a/trezorlib/messages/NEMGetAddress.py
+++ b/trezorlib/messages/NEMGetAddress.py
@@ -1,11 +1,26 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class NEMGetAddress(p.MessageType):
+    MESSAGE_WIRE_TYPE = 67
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('network', p.UVarintType, 0),
         3: ('show_display', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 67
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        network: int = None,
+        show_display: bool = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.network = network
+        self.show_display = show_display
diff --git a/trezorlib/messages/NEMImportanceTransfer.py b/trezorlib/messages/NEMImportanceTransfer.py
index c7c4b7e21..02edce556 100644
--- a/trezorlib/messages/NEMImportanceTransfer.py
+++ b/trezorlib/messages/NEMImportanceTransfer.py
@@ -7,3 +7,11 @@ class NEMImportanceTransfer(p.MessageType):
         1: ('mode', p.UVarintType, 0),
         2: ('public_key', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        mode: int = None,
+        public_key: bytes = None
+    ) -> None:
+        self.mode = mode
+        self.public_key = public_key
diff --git a/trezorlib/messages/NEMMosaic.py b/trezorlib/messages/NEMMosaic.py
index 08eeb96e2..c357345c5 100644
--- a/trezorlib/messages/NEMMosaic.py
+++ b/trezorlib/messages/NEMMosaic.py
@@ -8,3 +8,13 @@ class NEMMosaic(p.MessageType):
         2: ('mosaic', p.UnicodeType, 0),
         3: ('quantity', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        namespace: str = None,
+        mosaic: str = None,
+        quantity: int = None
+    ) -> None:
+        self.namespace = namespace
+        self.mosaic = mosaic
+        self.quantity = quantity
diff --git a/trezorlib/messages/NEMMosaicCreation.py b/trezorlib/messages/NEMMosaicCreation.py
index 8913ff9f3..26c7e9b0d 100644
--- a/trezorlib/messages/NEMMosaicCreation.py
+++ b/trezorlib/messages/NEMMosaicCreation.py
@@ -9,3 +9,13 @@ class NEMMosaicCreation(p.MessageType):
         2: ('sink', p.UnicodeType, 0),
         3: ('fee', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        definition: NEMMosaicDefinition = None,
+        sink: str = None,
+        fee: int = None
+    ) -> None:
+        self.definition = definition
+        self.sink = sink
+        self.fee = fee
diff --git a/trezorlib/messages/NEMMosaicDefinition.py b/trezorlib/messages/NEMMosaicDefinition.py
index c57b20bf9..353694048 100644
--- a/trezorlib/messages/NEMMosaicDefinition.py
+++ b/trezorlib/messages/NEMMosaicDefinition.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class NEMMosaicDefinition(p.MessageType):
@@ -20,3 +25,37 @@ class NEMMosaicDefinition(p.MessageType):
         14: ('description', p.UnicodeType, 0),
         15: ('networks', p.UVarintType, p.FLAG_REPEATED),
     }
+
+    def __init__(
+        self,
+        name: str = None,
+        ticker: str = None,
+        namespace: str = None,
+        mosaic: str = None,
+        divisibility: int = None,
+        levy: int = None,
+        fee: int = None,
+        levy_address: str = None,
+        levy_namespace: str = None,
+        levy_mosaic: str = None,
+        supply: int = None,
+        mutable_supply: bool = None,
+        transferable: bool = None,
+        description: str = None,
+        networks: List[int] = None
+    ) -> None:
+        self.name = name
+        self.ticker = ticker
+        self.namespace = namespace
+        self.mosaic = mosaic
+        self.divisibility = divisibility
+        self.levy = levy
+        self.fee = fee
+        self.levy_address = levy_address
+        self.levy_namespace = levy_namespace
+        self.levy_mosaic = levy_mosaic
+        self.supply = supply
+        self.mutable_supply = mutable_supply
+        self.transferable = transferable
+        self.description = description
+        self.networks = networks if networks is not None else []
diff --git a/trezorlib/messages/NEMMosaicSupplyChange.py b/trezorlib/messages/NEMMosaicSupplyChange.py
index 258200e57..546752ea3 100644
--- a/trezorlib/messages/NEMMosaicSupplyChange.py
+++ b/trezorlib/messages/NEMMosaicSupplyChange.py
@@ -9,3 +9,15 @@ class NEMMosaicSupplyChange(p.MessageType):
         3: ('type', p.UVarintType, 0),
         4: ('delta', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        namespace: str = None,
+        mosaic: str = None,
+        type: int = None,
+        delta: int = None
+    ) -> None:
+        self.namespace = namespace
+        self.mosaic = mosaic
+        self.type = type
+        self.delta = delta
diff --git a/trezorlib/messages/NEMProvisionNamespace.py b/trezorlib/messages/NEMProvisionNamespace.py
index 6388f4ab2..ec42fbcc3 100644
--- a/trezorlib/messages/NEMProvisionNamespace.py
+++ b/trezorlib/messages/NEMProvisionNamespace.py
@@ -9,3 +9,15 @@ class NEMProvisionNamespace(p.MessageType):
         3: ('sink', p.UnicodeType, 0),
         4: ('fee', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        namespace: str = None,
+        parent: str = None,
+        sink: str = None,
+        fee: int = None
+    ) -> None:
+        self.namespace = namespace
+        self.parent = parent
+        self.sink = sink
+        self.fee = fee
diff --git a/trezorlib/messages/NEMSignTx.py b/trezorlib/messages/NEMSignTx.py
index aec95e2ea..fe195e4bd 100644
--- a/trezorlib/messages/NEMSignTx.py
+++ b/trezorlib/messages/NEMSignTx.py
@@ -10,6 +10,7 @@ from .NEMTransfer import NEMTransfer
 
 
 class NEMSignTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 69
     FIELDS = {
         1: ('transaction', NEMTransactionCommon, 0),
         2: ('multisig', NEMTransactionCommon, 0),
@@ -21,4 +22,25 @@ class NEMSignTx(p.MessageType):
         8: ('aggregate_modification', NEMAggregateModification, 0),
         9: ('importance_transfer', NEMImportanceTransfer, 0),
     }
-    MESSAGE_WIRE_TYPE = 69
+
+    def __init__(
+        self,
+        transaction: NEMTransactionCommon = None,
+        multisig: NEMTransactionCommon = None,
+        transfer: NEMTransfer = None,
+        cosigning: bool = None,
+        provision_namespace: NEMProvisionNamespace = None,
+        mosaic_creation: NEMMosaicCreation = None,
+        supply_change: NEMMosaicSupplyChange = None,
+        aggregate_modification: NEMAggregateModification = None,
+        importance_transfer: NEMImportanceTransfer = None
+    ) -> None:
+        self.transaction = transaction
+        self.multisig = multisig
+        self.transfer = transfer
+        self.cosigning = cosigning
+        self.provision_namespace = provision_namespace
+        self.mosaic_creation = mosaic_creation
+        self.supply_change = supply_change
+        self.aggregate_modification = aggregate_modification
+        self.importance_transfer = importance_transfer
diff --git a/trezorlib/messages/NEMSignedTx.py b/trezorlib/messages/NEMSignedTx.py
index 18eac40bb..896b0933a 100644
--- a/trezorlib/messages/NEMSignedTx.py
+++ b/trezorlib/messages/NEMSignedTx.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class NEMSignedTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 70
     FIELDS = {
         1: ('data', p.BytesType, 0),
         2: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 70
+
+    def __init__(
+        self,
+        data: bytes = None,
+        signature: bytes = None
+    ) -> None:
+        self.data = data
+        self.signature = signature
diff --git a/trezorlib/messages/NEMTransactionCommon.py b/trezorlib/messages/NEMTransactionCommon.py
index bab273d53..fe4be36ab 100644
--- a/trezorlib/messages/NEMTransactionCommon.py
+++ b/trezorlib/messages/NEMTransactionCommon.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class NEMTransactionCommon(p.MessageType):
@@ -11,3 +16,19 @@ class NEMTransactionCommon(p.MessageType):
         5: ('deadline', p.UVarintType, 0),
         6: ('signer', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        network: int = None,
+        timestamp: int = None,
+        fee: int = None,
+        deadline: int = None,
+        signer: bytes = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.network = network
+        self.timestamp = timestamp
+        self.fee = fee
+        self.deadline = deadline
+        self.signer = signer
diff --git a/trezorlib/messages/NEMTransfer.py b/trezorlib/messages/NEMTransfer.py
index 5bd3540d0..efcbe463c 100644
--- a/trezorlib/messages/NEMTransfer.py
+++ b/trezorlib/messages/NEMTransfer.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .NEMMosaic import NEMMosaic
 
 
@@ -11,3 +16,17 @@ class NEMTransfer(p.MessageType):
         4: ('public_key', p.BytesType, 0),
         5: ('mosaics', NEMMosaic, p.FLAG_REPEATED),
     }
+
+    def __init__(
+        self,
+        recipient: str = None,
+        amount: int = None,
+        payload: bytes = None,
+        public_key: bytes = None,
+        mosaics: List[NEMMosaic] = None
+    ) -> None:
+        self.recipient = recipient
+        self.amount = amount
+        self.payload = payload
+        self.public_key = public_key
+        self.mosaics = mosaics if mosaics is not None else []
diff --git a/trezorlib/messages/PassphraseAck.py b/trezorlib/messages/PassphraseAck.py
index ae4b1bda1..1e050f599 100644
--- a/trezorlib/messages/PassphraseAck.py
+++ b/trezorlib/messages/PassphraseAck.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class PassphraseAck(p.MessageType):
+    MESSAGE_WIRE_TYPE = 42
     FIELDS = {
         1: ('passphrase', p.UnicodeType, 0),
         2: ('state', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 42
+
+    def __init__(
+        self,
+        passphrase: str = None,
+        state: bytes = None
+    ) -> None:
+        self.passphrase = passphrase
+        self.state = state
diff --git a/trezorlib/messages/PassphraseRequest.py b/trezorlib/messages/PassphraseRequest.py
index 2edd3695e..cdad9f14a 100644
--- a/trezorlib/messages/PassphraseRequest.py
+++ b/trezorlib/messages/PassphraseRequest.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class PassphraseRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 41
     FIELDS = {
         1: ('on_device', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 41
+
+    def __init__(
+        self,
+        on_device: bool = None
+    ) -> None:
+        self.on_device = on_device
diff --git a/trezorlib/messages/PassphraseStateRequest.py b/trezorlib/messages/PassphraseStateRequest.py
index 45dabaad4..3170b5d17 100644
--- a/trezorlib/messages/PassphraseStateRequest.py
+++ b/trezorlib/messages/PassphraseStateRequest.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class PassphraseStateRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 77
     FIELDS = {
         1: ('state', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 77
+
+    def __init__(
+        self,
+        state: bytes = None
+    ) -> None:
+        self.state = state
diff --git a/trezorlib/messages/PinMatrixAck.py b/trezorlib/messages/PinMatrixAck.py
index d47a449db..ceb3a91b4 100644
--- a/trezorlib/messages/PinMatrixAck.py
+++ b/trezorlib/messages/PinMatrixAck.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class PinMatrixAck(p.MessageType):
+    MESSAGE_WIRE_TYPE = 19
     FIELDS = {
         1: ('pin', p.UnicodeType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 19
+
+    def __init__(
+        self,
+        pin: str = None
+    ) -> None:
+        self.pin = pin
diff --git a/trezorlib/messages/PinMatrixRequest.py b/trezorlib/messages/PinMatrixRequest.py
index 3964b302b..2372383cd 100644
--- a/trezorlib/messages/PinMatrixRequest.py
+++ b/trezorlib/messages/PinMatrixRequest.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class PinMatrixRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 18
     FIELDS = {
         1: ('type', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 18
+
+    def __init__(
+        self,
+        type: int = None
+    ) -> None:
+        self.type = type
diff --git a/trezorlib/messages/Ping.py b/trezorlib/messages/Ping.py
index b09a8c0ff..b595ae01c 100644
--- a/trezorlib/messages/Ping.py
+++ b/trezorlib/messages/Ping.py
@@ -3,10 +3,22 @@ from .. import protobuf as p
 
 
 class Ping(p.MessageType):
+    MESSAGE_WIRE_TYPE = 1
     FIELDS = {
         1: ('message', p.UnicodeType, 0),
         2: ('button_protection', p.BoolType, 0),
         3: ('pin_protection', p.BoolType, 0),
         4: ('passphrase_protection', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 1
+
+    def __init__(
+        self,
+        message: str = None,
+        button_protection: bool = None,
+        pin_protection: bool = None,
+        passphrase_protection: bool = None
+    ) -> None:
+        self.message = message
+        self.button_protection = button_protection
+        self.pin_protection = pin_protection
+        self.passphrase_protection = passphrase_protection
diff --git a/trezorlib/messages/PublicKey.py b/trezorlib/messages/PublicKey.py
index bbff5c844..957fd3a1e 100644
--- a/trezorlib/messages/PublicKey.py
+++ b/trezorlib/messages/PublicKey.py
@@ -4,8 +4,16 @@ from .HDNodeType import HDNodeType
 
 
 class PublicKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 12
     FIELDS = {
         1: ('node', HDNodeType, 0),  # required
         2: ('xpub', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 12
+
+    def __init__(
+        self,
+        node: HDNodeType = None,
+        xpub: str = None
+    ) -> None:
+        self.node = node
+        self.xpub = xpub
diff --git a/trezorlib/messages/RecoveryDevice.py b/trezorlib/messages/RecoveryDevice.py
index 500bddd95..90b6eed11 100644
--- a/trezorlib/messages/RecoveryDevice.py
+++ b/trezorlib/messages/RecoveryDevice.py
@@ -3,6 +3,7 @@ from .. import protobuf as p
 
 
 class RecoveryDevice(p.MessageType):
+    MESSAGE_WIRE_TYPE = 45
     FIELDS = {
         1: ('word_count', p.UVarintType, 0),
         2: ('passphrase_protection', p.BoolType, 0),
@@ -14,4 +15,25 @@ class RecoveryDevice(p.MessageType):
         9: ('u2f_counter', p.UVarintType, 0),
         10: ('dry_run', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 45
+
+    def __init__(
+        self,
+        word_count: int = None,
+        passphrase_protection: bool = None,
+        pin_protection: bool = None,
+        language: str = None,
+        label: str = None,
+        enforce_wordlist: bool = None,
+        type: int = None,
+        u2f_counter: int = None,
+        dry_run: bool = None
+    ) -> None:
+        self.word_count = word_count
+        self.passphrase_protection = passphrase_protection
+        self.pin_protection = pin_protection
+        self.language = language
+        self.label = label
+        self.enforce_wordlist = enforce_wordlist
+        self.type = type
+        self.u2f_counter = u2f_counter
+        self.dry_run = dry_run
diff --git a/trezorlib/messages/ResetDevice.py b/trezorlib/messages/ResetDevice.py
index 7231cb041..bce801bd5 100644
--- a/trezorlib/messages/ResetDevice.py
+++ b/trezorlib/messages/ResetDevice.py
@@ -3,6 +3,7 @@ from .. import protobuf as p
 
 
 class ResetDevice(p.MessageType):
+    MESSAGE_WIRE_TYPE = 14
     FIELDS = {
         1: ('display_random', p.BoolType, 0),
         2: ('strength', p.UVarintType, 0),  # default=256
@@ -13,4 +14,23 @@ class ResetDevice(p.MessageType):
         7: ('u2f_counter', p.UVarintType, 0),
         8: ('skip_backup', p.BoolType, 0),
     }
-    MESSAGE_WIRE_TYPE = 14
+
+    def __init__(
+        self,
+        display_random: bool = None,
+        strength: int = None,
+        passphrase_protection: bool = None,
+        pin_protection: bool = None,
+        language: str = None,
+        label: str = None,
+        u2f_counter: int = None,
+        skip_backup: bool = None
+    ) -> None:
+        self.display_random = display_random
+        self.strength = strength
+        self.passphrase_protection = passphrase_protection
+        self.pin_protection = pin_protection
+        self.language = language
+        self.label = label
+        self.u2f_counter = u2f_counter
+        self.skip_backup = skip_backup
diff --git a/trezorlib/messages/SelfTest.py b/trezorlib/messages/SelfTest.py
index 0f4099f29..bf8bd4542 100644
--- a/trezorlib/messages/SelfTest.py
+++ b/trezorlib/messages/SelfTest.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class SelfTest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 32
     FIELDS = {
         1: ('payload', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 32
+
+    def __init__(
+        self,
+        payload: bytes = None
+    ) -> None:
+        self.payload = payload
diff --git a/trezorlib/messages/SetU2FCounter.py b/trezorlib/messages/SetU2FCounter.py
index 9598c62a1..40c56d62f 100644
--- a/trezorlib/messages/SetU2FCounter.py
+++ b/trezorlib/messages/SetU2FCounter.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class SetU2FCounter(p.MessageType):
+    MESSAGE_WIRE_TYPE = 63
     FIELDS = {
         1: ('u2f_counter', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 63
+
+    def __init__(
+        self,
+        u2f_counter: int = None
+    ) -> None:
+        self.u2f_counter = u2f_counter
diff --git a/trezorlib/messages/SignIdentity.py b/trezorlib/messages/SignIdentity.py
index fbbcbdc4d..6b105b8ea 100644
--- a/trezorlib/messages/SignIdentity.py
+++ b/trezorlib/messages/SignIdentity.py
@@ -4,10 +4,22 @@ from .IdentityType import IdentityType
 
 
 class SignIdentity(p.MessageType):
+    MESSAGE_WIRE_TYPE = 53
     FIELDS = {
         1: ('identity', IdentityType, 0),
         2: ('challenge_hidden', p.BytesType, 0),
         3: ('challenge_visual', p.UnicodeType, 0),
         4: ('ecdsa_curve_name', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 53
+
+    def __init__(
+        self,
+        identity: IdentityType = None,
+        challenge_hidden: bytes = None,
+        challenge_visual: str = None,
+        ecdsa_curve_name: str = None
+    ) -> None:
+        self.identity = identity
+        self.challenge_hidden = challenge_hidden
+        self.challenge_visual = challenge_visual
+        self.ecdsa_curve_name = ecdsa_curve_name
diff --git a/trezorlib/messages/SignMessage.py b/trezorlib/messages/SignMessage.py
index dde1fdd2b..5e6aa797c 100644
--- a/trezorlib/messages/SignMessage.py
+++ b/trezorlib/messages/SignMessage.py
@@ -1,12 +1,29 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class SignMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 38
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('message', p.BytesType, 0),  # required
         3: ('coin_name', p.UnicodeType, 0),  # default='Bitcoin'
         4: ('script_type', p.UVarintType, 0),  # default=0
     }
-    MESSAGE_WIRE_TYPE = 38
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        message: bytes = None,
+        coin_name: str = None,
+        script_type: int = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.message = message
+        self.coin_name = coin_name
+        self.script_type = script_type
diff --git a/trezorlib/messages/SignTx.py b/trezorlib/messages/SignTx.py
index e182ad19d..b6cf04474 100644
--- a/trezorlib/messages/SignTx.py
+++ b/trezorlib/messages/SignTx.py
@@ -3,6 +3,7 @@ from .. import protobuf as p
 
 
 class SignTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 15
     FIELDS = {
         1: ('outputs_count', p.UVarintType, 0),  # required
         2: ('inputs_count', p.UVarintType, 0),  # required
@@ -11,4 +12,19 @@ class SignTx(p.MessageType):
         5: ('lock_time', p.UVarintType, 0),  # default=0
         6: ('decred_expiry', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 15
+
+    def __init__(
+        self,
+        outputs_count: int = None,
+        inputs_count: int = None,
+        coin_name: str = None,
+        version: int = None,
+        lock_time: int = None,
+        decred_expiry: int = None
+    ) -> None:
+        self.outputs_count = outputs_count
+        self.inputs_count = inputs_count
+        self.coin_name = coin_name
+        self.version = version
+        self.lock_time = lock_time
+        self.decred_expiry = decred_expiry
diff --git a/trezorlib/messages/SignedIdentity.py b/trezorlib/messages/SignedIdentity.py
index 465b0c86c..dec333494 100644
--- a/trezorlib/messages/SignedIdentity.py
+++ b/trezorlib/messages/SignedIdentity.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class SignedIdentity(p.MessageType):
+    MESSAGE_WIRE_TYPE = 54
     FIELDS = {
         1: ('address', p.UnicodeType, 0),
         2: ('public_key', p.BytesType, 0),
         3: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 54
+
+    def __init__(
+        self,
+        address: str = None,
+        public_key: bytes = None,
+        signature: bytes = None
+    ) -> None:
+        self.address = address
+        self.public_key = public_key
+        self.signature = signature
diff --git a/trezorlib/messages/SimpleSignTx.py b/trezorlib/messages/SimpleSignTx.py
index b6ed29bde..c66bfc0b9 100644
--- a/trezorlib/messages/SimpleSignTx.py
+++ b/trezorlib/messages/SimpleSignTx.py
@@ -1,11 +1,17 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .TransactionType import TransactionType
 from .TxInputType import TxInputType
 from .TxOutputType import TxOutputType
 
 
 class SimpleSignTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 16
     FIELDS = {
         1: ('inputs', TxInputType, p.FLAG_REPEATED),
         2: ('outputs', TxOutputType, p.FLAG_REPEATED),
@@ -14,4 +20,19 @@ class SimpleSignTx(p.MessageType):
         5: ('version', p.UVarintType, 0),  # default=1
         6: ('lock_time', p.UVarintType, 0),  # default=0
     }
-    MESSAGE_WIRE_TYPE = 16
+
+    def __init__(
+        self,
+        inputs: List[TxInputType] = None,
+        outputs: List[TxOutputType] = None,
+        transactions: List[TransactionType] = None,
+        coin_name: str = None,
+        version: int = None,
+        lock_time: int = None
+    ) -> None:
+        self.inputs = inputs if inputs is not None else []
+        self.outputs = outputs if outputs is not None else []
+        self.transactions = transactions if transactions is not None else []
+        self.coin_name = coin_name
+        self.version = version
+        self.lock_time = lock_time
diff --git a/trezorlib/messages/StellarAccountMergeOp.py b/trezorlib/messages/StellarAccountMergeOp.py
index 83732ae9b..7e33cef95 100644
--- a/trezorlib/messages/StellarAccountMergeOp.py
+++ b/trezorlib/messages/StellarAccountMergeOp.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class StellarAccountMergeOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 218
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('destination_account', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 218
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        destination_account: bytes = None
+    ) -> None:
+        self.source_account = source_account
+        self.destination_account = destination_account
diff --git a/trezorlib/messages/StellarAllowTrustOp.py b/trezorlib/messages/StellarAllowTrustOp.py
index 2232c3ec1..0bd39f652 100644
--- a/trezorlib/messages/StellarAllowTrustOp.py
+++ b/trezorlib/messages/StellarAllowTrustOp.py
@@ -3,6 +3,7 @@ from .. import protobuf as p
 
 
 class StellarAllowTrustOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 217
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('trusted_account', p.BytesType, 0),
@@ -10,4 +11,17 @@ class StellarAllowTrustOp(p.MessageType):
         4: ('asset_code', p.UnicodeType, 0),
         5: ('is_authorized', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 217
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        trusted_account: bytes = None,
+        asset_type: int = None,
+        asset_code: str = None,
+        is_authorized: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.trusted_account = trusted_account
+        self.asset_type = asset_type
+        self.asset_code = asset_code
+        self.is_authorized = is_authorized
diff --git a/trezorlib/messages/StellarAssetType.py b/trezorlib/messages/StellarAssetType.py
index c997a7d67..87f066581 100644
--- a/trezorlib/messages/StellarAssetType.py
+++ b/trezorlib/messages/StellarAssetType.py
@@ -8,3 +8,13 @@ class StellarAssetType(p.MessageType):
         2: ('code', p.UnicodeType, 0),
         3: ('issuer', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        type: int = None,
+        code: str = None,
+        issuer: bytes = None
+    ) -> None:
+        self.type = type
+        self.code = code
+        self.issuer = issuer
diff --git a/trezorlib/messages/StellarBumpSequenceOp.py b/trezorlib/messages/StellarBumpSequenceOp.py
index ba82bd6c1..17bf76572 100644
--- a/trezorlib/messages/StellarBumpSequenceOp.py
+++ b/trezorlib/messages/StellarBumpSequenceOp.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class StellarBumpSequenceOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 221
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('bump_to', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 221
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        bump_to: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.bump_to = bump_to
diff --git a/trezorlib/messages/StellarChangeTrustOp.py b/trezorlib/messages/StellarChangeTrustOp.py
index 86884830e..9ae8e38f0 100644
--- a/trezorlib/messages/StellarChangeTrustOp.py
+++ b/trezorlib/messages/StellarChangeTrustOp.py
@@ -4,9 +4,19 @@ from .StellarAssetType import StellarAssetType
 
 
 class StellarChangeTrustOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 216
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('asset', StellarAssetType, 0),
         3: ('limit', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 216
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        asset: StellarAssetType = None,
+        limit: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.asset = asset
+        self.limit = limit
diff --git a/trezorlib/messages/StellarCreateAccountOp.py b/trezorlib/messages/StellarCreateAccountOp.py
index 4c5d22a43..d486e01c9 100644
--- a/trezorlib/messages/StellarCreateAccountOp.py
+++ b/trezorlib/messages/StellarCreateAccountOp.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class StellarCreateAccountOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 210
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('new_account', p.BytesType, 0),
         3: ('starting_balance', p.SVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 210
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        new_account: bytes = None,
+        starting_balance: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.new_account = new_account
+        self.starting_balance = starting_balance
diff --git a/trezorlib/messages/StellarCreatePassiveOfferOp.py b/trezorlib/messages/StellarCreatePassiveOfferOp.py
index e18210e8b..09764cd65 100644
--- a/trezorlib/messages/StellarCreatePassiveOfferOp.py
+++ b/trezorlib/messages/StellarCreatePassiveOfferOp.py
@@ -4,6 +4,7 @@ from .StellarAssetType import StellarAssetType
 
 
 class StellarCreatePassiveOfferOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 214
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('selling_asset', StellarAssetType, 0),
@@ -12,4 +13,19 @@ class StellarCreatePassiveOfferOp(p.MessageType):
         5: ('price_n', p.UVarintType, 0),
         6: ('price_d', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 214
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        selling_asset: StellarAssetType = None,
+        buying_asset: StellarAssetType = None,
+        amount: int = None,
+        price_n: int = None,
+        price_d: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.selling_asset = selling_asset
+        self.buying_asset = buying_asset
+        self.amount = amount
+        self.price_n = price_n
+        self.price_d = price_d
diff --git a/trezorlib/messages/StellarGetPublicKey.py b/trezorlib/messages/StellarGetPublicKey.py
index 2d2272aae..3629086d0 100644
--- a/trezorlib/messages/StellarGetPublicKey.py
+++ b/trezorlib/messages/StellarGetPublicKey.py
@@ -1,9 +1,20 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class StellarGetPublicKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 200
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
     }
-    MESSAGE_WIRE_TYPE = 200
+
+    def __init__(
+        self,
+        address_n: List[int] = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
diff --git a/trezorlib/messages/StellarManageDataOp.py b/trezorlib/messages/StellarManageDataOp.py
index 140019354..b63238020 100644
--- a/trezorlib/messages/StellarManageDataOp.py
+++ b/trezorlib/messages/StellarManageDataOp.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class StellarManageDataOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 220
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('key', p.UnicodeType, 0),
         3: ('value', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 220
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        key: str = None,
+        value: bytes = None
+    ) -> None:
+        self.source_account = source_account
+        self.key = key
+        self.value = value
diff --git a/trezorlib/messages/StellarManageOfferOp.py b/trezorlib/messages/StellarManageOfferOp.py
index 70564f151..1199b94e6 100644
--- a/trezorlib/messages/StellarManageOfferOp.py
+++ b/trezorlib/messages/StellarManageOfferOp.py
@@ -4,6 +4,7 @@ from .StellarAssetType import StellarAssetType
 
 
 class StellarManageOfferOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 213
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('selling_asset', StellarAssetType, 0),
@@ -13,4 +14,21 @@ class StellarManageOfferOp(p.MessageType):
         6: ('price_d', p.UVarintType, 0),
         7: ('offer_id', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 213
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        selling_asset: StellarAssetType = None,
+        buying_asset: StellarAssetType = None,
+        amount: int = None,
+        price_n: int = None,
+        price_d: int = None,
+        offer_id: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.selling_asset = selling_asset
+        self.buying_asset = buying_asset
+        self.amount = amount
+        self.price_n = price_n
+        self.price_d = price_d
+        self.offer_id = offer_id
diff --git a/trezorlib/messages/StellarMessageSignature.py b/trezorlib/messages/StellarMessageSignature.py
index 430ea9449..631a04109 100644
--- a/trezorlib/messages/StellarMessageSignature.py
+++ b/trezorlib/messages/StellarMessageSignature.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class StellarMessageSignature(p.MessageType):
+    MESSAGE_WIRE_TYPE = 205
     FIELDS = {
         1: ('public_key', p.BytesType, 0),
         2: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 205
+
+    def __init__(
+        self,
+        public_key: bytes = None,
+        signature: bytes = None
+    ) -> None:
+        self.public_key = public_key
+        self.signature = signature
diff --git a/trezorlib/messages/StellarPathPaymentOp.py b/trezorlib/messages/StellarPathPaymentOp.py
index 491d5b723..6917156aa 100644
--- a/trezorlib/messages/StellarPathPaymentOp.py
+++ b/trezorlib/messages/StellarPathPaymentOp.py
@@ -1,9 +1,15 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .StellarAssetType import StellarAssetType
 
 
 class StellarPathPaymentOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 212
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('send_asset', StellarAssetType, 0),
@@ -13,4 +19,21 @@ class StellarPathPaymentOp(p.MessageType):
         6: ('destination_amount', p.SVarintType, 0),
         7: ('paths', StellarAssetType, p.FLAG_REPEATED),
     }
-    MESSAGE_WIRE_TYPE = 212
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        send_asset: StellarAssetType = None,
+        send_max: int = None,
+        destination_account: bytes = None,
+        destination_asset: StellarAssetType = None,
+        destination_amount: int = None,
+        paths: List[StellarAssetType] = None
+    ) -> None:
+        self.source_account = source_account
+        self.send_asset = send_asset
+        self.send_max = send_max
+        self.destination_account = destination_account
+        self.destination_asset = destination_asset
+        self.destination_amount = destination_amount
+        self.paths = paths if paths is not None else []
diff --git a/trezorlib/messages/StellarPaymentOp.py b/trezorlib/messages/StellarPaymentOp.py
index 23d5be5bc..dabf12903 100644
--- a/trezorlib/messages/StellarPaymentOp.py
+++ b/trezorlib/messages/StellarPaymentOp.py
@@ -4,10 +4,22 @@ from .StellarAssetType import StellarAssetType
 
 
 class StellarPaymentOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 211
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('destination_account', p.BytesType, 0),
         3: ('asset', StellarAssetType, 0),
         4: ('amount', p.SVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 211
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        destination_account: bytes = None,
+        asset: StellarAssetType = None,
+        amount: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.destination_account = destination_account
+        self.asset = asset
+        self.amount = amount
diff --git a/trezorlib/messages/StellarPublicKey.py b/trezorlib/messages/StellarPublicKey.py
index 1229d25f4..476814078 100644
--- a/trezorlib/messages/StellarPublicKey.py
+++ b/trezorlib/messages/StellarPublicKey.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class StellarPublicKey(p.MessageType):
+    MESSAGE_WIRE_TYPE = 201
     FIELDS = {
         1: ('public_key', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 201
+
+    def __init__(
+        self,
+        public_key: bytes = None
+    ) -> None:
+        self.public_key = public_key
diff --git a/trezorlib/messages/StellarSetOptionsOp.py b/trezorlib/messages/StellarSetOptionsOp.py
index 53d3c2ff8..ec424a82c 100644
--- a/trezorlib/messages/StellarSetOptionsOp.py
+++ b/trezorlib/messages/StellarSetOptionsOp.py
@@ -3,6 +3,7 @@ from .. import protobuf as p
 
 
 class StellarSetOptionsOp(p.MessageType):
+    MESSAGE_WIRE_TYPE = 215
     FIELDS = {
         1: ('source_account', p.BytesType, 0),
         2: ('inflation_destination_account', p.BytesType, 0),
@@ -17,4 +18,31 @@ class StellarSetOptionsOp(p.MessageType):
         11: ('signer_key', p.BytesType, 0),
         12: ('signer_weight', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 215
+
+    def __init__(
+        self,
+        source_account: bytes = None,
+        inflation_destination_account: bytes = None,
+        clear_flags: int = None,
+        set_flags: int = None,
+        master_weight: int = None,
+        low_threshold: int = None,
+        medium_threshold: int = None,
+        high_threshold: int = None,
+        home_domain: str = None,
+        signer_type: int = None,
+        signer_key: bytes = None,
+        signer_weight: int = None
+    ) -> None:
+        self.source_account = source_account
+        self.inflation_destination_account = inflation_destination_account
+        self.clear_flags = clear_flags
+        self.set_flags = set_flags
+        self.master_weight = master_weight
+        self.low_threshold = low_threshold
+        self.medium_threshold = medium_threshold
+        self.high_threshold = high_threshold
+        self.home_domain = home_domain
+        self.signer_type = signer_type
+        self.signer_key = signer_key
+        self.signer_weight = signer_weight
diff --git a/trezorlib/messages/StellarSignMessage.py b/trezorlib/messages/StellarSignMessage.py
index 5d51be39d..190a3dd11 100644
--- a/trezorlib/messages/StellarSignMessage.py
+++ b/trezorlib/messages/StellarSignMessage.py
@@ -1,10 +1,23 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class StellarSignMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 204
     FIELDS = {
         1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
         2: ('message', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 204
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        message: str = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.message = message
diff --git a/trezorlib/messages/StellarSignTx.py b/trezorlib/messages/StellarSignTx.py
index a78649d45..f0b252b6a 100644
--- a/trezorlib/messages/StellarSignTx.py
+++ b/trezorlib/messages/StellarSignTx.py
@@ -1,8 +1,14 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 
 
 class StellarSignTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 202
     FIELDS = {
         1: ('protocol_version', p.UVarintType, 0),
         2: ('address_n', p.UVarintType, p.FLAG_REPEATED),
@@ -18,4 +24,33 @@ class StellarSignTx(p.MessageType):
         13: ('memo_hash', p.BytesType, 0),
         14: ('num_operations', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 202
+
+    def __init__(
+        self,
+        protocol_version: int = None,
+        address_n: List[int] = None,
+        network_passphrase: str = None,
+        source_account: bytes = None,
+        fee: int = None,
+        sequence_number: int = None,
+        timebounds_start: int = None,
+        timebounds_end: int = None,
+        memo_type: int = None,
+        memo_text: str = None,
+        memo_id: int = None,
+        memo_hash: bytes = None,
+        num_operations: int = None
+    ) -> None:
+        self.protocol_version = protocol_version
+        self.address_n = address_n if address_n is not None else []
+        self.network_passphrase = network_passphrase
+        self.source_account = source_account
+        self.fee = fee
+        self.sequence_number = sequence_number
+        self.timebounds_start = timebounds_start
+        self.timebounds_end = timebounds_end
+        self.memo_type = memo_type
+        self.memo_text = memo_text
+        self.memo_id = memo_id
+        self.memo_hash = memo_hash
+        self.num_operations = num_operations
diff --git a/trezorlib/messages/StellarSignedTx.py b/trezorlib/messages/StellarSignedTx.py
index 9ae7a314c..c1c03428b 100644
--- a/trezorlib/messages/StellarSignedTx.py
+++ b/trezorlib/messages/StellarSignedTx.py
@@ -3,8 +3,16 @@ from .. import protobuf as p
 
 
 class StellarSignedTx(p.MessageType):
+    MESSAGE_WIRE_TYPE = 230
     FIELDS = {
         1: ('public_key', p.BytesType, 0),
         2: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 230
+
+    def __init__(
+        self,
+        public_key: bytes = None,
+        signature: bytes = None
+    ) -> None:
+        self.public_key = public_key
+        self.signature = signature
diff --git a/trezorlib/messages/StellarVerifyMessage.py b/trezorlib/messages/StellarVerifyMessage.py
index 967bdea48..2189306d9 100644
--- a/trezorlib/messages/StellarVerifyMessage.py
+++ b/trezorlib/messages/StellarVerifyMessage.py
@@ -3,9 +3,19 @@ from .. import protobuf as p
 
 
 class StellarVerifyMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 206
     FIELDS = {
         1: ('public_key', p.BytesType, 0),
         2: ('message', p.BytesType, 0),
         3: ('signature', p.BytesType, 0),
     }
-    MESSAGE_WIRE_TYPE = 206
+
+    def __init__(
+        self,
+        public_key: bytes = None,
+        message: bytes = None,
+        signature: bytes = None
+    ) -> None:
+        self.public_key = public_key
+        self.message = message
+        self.signature = signature
diff --git a/trezorlib/messages/Success.py b/trezorlib/messages/Success.py
index a7f1872aa..ea541a80a 100644
--- a/trezorlib/messages/Success.py
+++ b/trezorlib/messages/Success.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class Success(p.MessageType):
+    MESSAGE_WIRE_TYPE = 2
     FIELDS = {
         1: ('message', p.UnicodeType, 0),
     }
-    MESSAGE_WIRE_TYPE = 2
+
+    def __init__(
+        self,
+        message: str = None
+    ) -> None:
+        self.message = message
diff --git a/trezorlib/messages/TransactionType.py b/trezorlib/messages/TransactionType.py
index d3207156d..34f0a263a 100644
--- a/trezorlib/messages/TransactionType.py
+++ b/trezorlib/messages/TransactionType.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .TxInputType import TxInputType
 from .TxOutputBinType import TxOutputBinType
 from .TxOutputType import TxOutputType
@@ -18,3 +23,27 @@ class TransactionType(p.MessageType):
         9: ('extra_data_len', p.UVarintType, 0),
         10: ('decred_expiry', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        version: int = None,
+        inputs: List[TxInputType] = None,
+        bin_outputs: List[TxOutputBinType] = None,
+        outputs: List[TxOutputType] = None,
+        lock_time: int = None,
+        inputs_cnt: int = None,
+        outputs_cnt: int = None,
+        extra_data: bytes = None,
+        extra_data_len: int = None,
+        decred_expiry: int = None
+    ) -> None:
+        self.version = version
+        self.inputs = inputs if inputs is not None else []
+        self.bin_outputs = bin_outputs if bin_outputs is not None else []
+        self.outputs = outputs if outputs is not None else []
+        self.lock_time = lock_time
+        self.inputs_cnt = inputs_cnt
+        self.outputs_cnt = outputs_cnt
+        self.extra_data = extra_data
+        self.extra_data_len = extra_data_len
+        self.decred_expiry = decred_expiry
diff --git a/trezorlib/messages/TxAck.py b/trezorlib/messages/TxAck.py
index 0366e0ba5..e4600b9cf 100644
--- a/trezorlib/messages/TxAck.py
+++ b/trezorlib/messages/TxAck.py
@@ -4,7 +4,13 @@ from .TransactionType import TransactionType
 
 
 class TxAck(p.MessageType):
+    MESSAGE_WIRE_TYPE = 22
     FIELDS = {
         1: ('tx', TransactionType, 0),
     }
-    MESSAGE_WIRE_TYPE = 22
+
+    def __init__(
+        self,
+        tx: TransactionType = None
+    ) -> None:
+        self.tx = tx
diff --git a/trezorlib/messages/TxInputType.py b/trezorlib/messages/TxInputType.py
index a0798aa65..05c839d81 100644
--- a/trezorlib/messages/TxInputType.py
+++ b/trezorlib/messages/TxInputType.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .MultisigRedeemScriptType import MultisigRedeemScriptType
 
 
@@ -16,3 +21,27 @@ class TxInputType(p.MessageType):
         9: ('decred_tree', p.UVarintType, 0),
         10: ('decred_script_version', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        address_n: List[int] = None,
+        prev_hash: bytes = None,
+        prev_index: int = None,
+        script_sig: bytes = None,
+        sequence: int = None,
+        script_type: int = None,
+        multisig: MultisigRedeemScriptType = None,
+        amount: int = None,
+        decred_tree: int = None,
+        decred_script_version: int = None
+    ) -> None:
+        self.address_n = address_n if address_n is not None else []
+        self.prev_hash = prev_hash
+        self.prev_index = prev_index
+        self.script_sig = script_sig
+        self.sequence = sequence
+        self.script_type = script_type
+        self.multisig = multisig
+        self.amount = amount
+        self.decred_tree = decred_tree
+        self.decred_script_version = decred_script_version
diff --git a/trezorlib/messages/TxOutputBinType.py b/trezorlib/messages/TxOutputBinType.py
index 270856e22..d8aeb308e 100644
--- a/trezorlib/messages/TxOutputBinType.py
+++ b/trezorlib/messages/TxOutputBinType.py
@@ -8,3 +8,13 @@ class TxOutputBinType(p.MessageType):
         2: ('script_pubkey', p.BytesType, 0),  # required
         3: ('decred_script_version', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        amount: int = None,
+        script_pubkey: bytes = None,
+        decred_script_version: int = None
+    ) -> None:
+        self.amount = amount
+        self.script_pubkey = script_pubkey
+        self.decred_script_version = decred_script_version
diff --git a/trezorlib/messages/TxOutputType.py b/trezorlib/messages/TxOutputType.py
index 63a7f199f..4f26845f6 100644
--- a/trezorlib/messages/TxOutputType.py
+++ b/trezorlib/messages/TxOutputType.py
@@ -1,5 +1,10 @@
 # Automatically generated by pb2py
 from .. import protobuf as p
+if __debug__:
+    try:
+        from typing import List
+    except ImportError:
+        List = None
 from .MultisigRedeemScriptType import MultisigRedeemScriptType
 
 
@@ -13,3 +18,21 @@ class TxOutputType(p.MessageType):
         6: ('op_return_data', p.BytesType, 0),
         7: ('decred_script_version', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        address: str = None,
+        address_n: List[int] = None,
+        amount: int = None,
+        script_type: int = None,
+        multisig: MultisigRedeemScriptType = None,
+        op_return_data: bytes = None,
+        decred_script_version: int = None
+    ) -> None:
+        self.address = address
+        self.address_n = address_n if address_n is not None else []
+        self.amount = amount
+        self.script_type = script_type
+        self.multisig = multisig
+        self.op_return_data = op_return_data
+        self.decred_script_version = decred_script_version
diff --git a/trezorlib/messages/TxRequest.py b/trezorlib/messages/TxRequest.py
index 9eb813de7..6c76c85f3 100644
--- a/trezorlib/messages/TxRequest.py
+++ b/trezorlib/messages/TxRequest.py
@@ -5,9 +5,19 @@ from .TxRequestSerializedType import TxRequestSerializedType
 
 
 class TxRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 21
     FIELDS = {
         1: ('request_type', p.UVarintType, 0),
         2: ('details', TxRequestDetailsType, 0),
         3: ('serialized', TxRequestSerializedType, 0),
     }
-    MESSAGE_WIRE_TYPE = 21
+
+    def __init__(
+        self,
+        request_type: int = None,
+        details: TxRequestDetailsType = None,
+        serialized: TxRequestSerializedType = None
+    ) -> None:
+        self.request_type = request_type
+        self.details = details
+        self.serialized = serialized
diff --git a/trezorlib/messages/TxRequestDetailsType.py b/trezorlib/messages/TxRequestDetailsType.py
index ea49a094e..754e56ed8 100644
--- a/trezorlib/messages/TxRequestDetailsType.py
+++ b/trezorlib/messages/TxRequestDetailsType.py
@@ -9,3 +9,15 @@ class TxRequestDetailsType(p.MessageType):
         3: ('extra_data_len', p.UVarintType, 0),
         4: ('extra_data_offset', p.UVarintType, 0),
     }
+
+    def __init__(
+        self,
+        request_index: int = None,
+        tx_hash: bytes = None,
+        extra_data_len: int = None,
+        extra_data_offset: int = None
+    ) -> None:
+        self.request_index = request_index
+        self.tx_hash = tx_hash
+        self.extra_data_len = extra_data_len
+        self.extra_data_offset = extra_data_offset
diff --git a/trezorlib/messages/TxRequestSerializedType.py b/trezorlib/messages/TxRequestSerializedType.py
index 4225a34de..c9e25a240 100644
--- a/trezorlib/messages/TxRequestSerializedType.py
+++ b/trezorlib/messages/TxRequestSerializedType.py
@@ -8,3 +8,13 @@ class TxRequestSerializedType(p.MessageType):
         2: ('signature', p.BytesType, 0),
         3: ('serialized_tx', p.BytesType, 0),
     }
+
+    def __init__(
+        self,
+        signature_index: int = None,
+        signature: bytes = None,
+        serialized_tx: bytes = None
+    ) -> None:
+        self.signature_index = signature_index
+        self.signature = signature
+        self.serialized_tx = serialized_tx
diff --git a/trezorlib/messages/TxSize.py b/trezorlib/messages/TxSize.py
index 32713f7e7..378db7049 100644
--- a/trezorlib/messages/TxSize.py
+++ b/trezorlib/messages/TxSize.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class TxSize(p.MessageType):
+    MESSAGE_WIRE_TYPE = 44
     FIELDS = {
         1: ('tx_size', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 44
+
+    def __init__(
+        self,
+        tx_size: int = None
+    ) -> None:
+        self.tx_size = tx_size
diff --git a/trezorlib/messages/VerifyMessage.py b/trezorlib/messages/VerifyMessage.py
index 280935739..2d861442b 100644
--- a/trezorlib/messages/VerifyMessage.py
+++ b/trezorlib/messages/VerifyMessage.py
@@ -3,10 +3,22 @@ from .. import protobuf as p
 
 
 class VerifyMessage(p.MessageType):
+    MESSAGE_WIRE_TYPE = 39
     FIELDS = {
         1: ('address', p.UnicodeType, 0),
         2: ('signature', p.BytesType, 0),
         3: ('message', p.BytesType, 0),
         4: ('coin_name', p.UnicodeType, 0),  # default='Bitcoin'
     }
-    MESSAGE_WIRE_TYPE = 39
+
+    def __init__(
+        self,
+        address: str = None,
+        signature: bytes = None,
+        message: bytes = None,
+        coin_name: str = None
+    ) -> None:
+        self.address = address
+        self.signature = signature
+        self.message = message
+        self.coin_name = coin_name
diff --git a/trezorlib/messages/WordAck.py b/trezorlib/messages/WordAck.py
index bbc9a5351..6c1c3c58f 100644
--- a/trezorlib/messages/WordAck.py
+++ b/trezorlib/messages/WordAck.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class WordAck(p.MessageType):
+    MESSAGE_WIRE_TYPE = 47
     FIELDS = {
         1: ('word', p.UnicodeType, 0),  # required
     }
-    MESSAGE_WIRE_TYPE = 47
+
+    def __init__(
+        self,
+        word: str = None
+    ) -> None:
+        self.word = word
diff --git a/trezorlib/messages/WordRequest.py b/trezorlib/messages/WordRequest.py
index f03b6b8a2..410d5cfb7 100644
--- a/trezorlib/messages/WordRequest.py
+++ b/trezorlib/messages/WordRequest.py
@@ -3,7 +3,13 @@ from .. import protobuf as p
 
 
 class WordRequest(p.MessageType):
+    MESSAGE_WIRE_TYPE = 46
     FIELDS = {
         1: ('type', p.UVarintType, 0),
     }
-    MESSAGE_WIRE_TYPE = 46
+
+    def __init__(
+        self,
+        type: int = None
+    ) -> None:
+        self.type = type