gns3-server/docs/api/examples/controller_post_projectsprojectidsnapshots.txt

curl -i -X POST 'http://localhost:3080/v2/projects/d7a48971-8970-4028-89f7-057e1bc58042/snapshots' -d '{"name": "snap1"}'

POST /v2/projects/d7a48971-8970-4028-89f7-057e1bc58042/snapshots HTTP/1.1
{
    "name": "snap1"
}


HTTP/1.1 201
Content-Length: 170
Content-Type: application/json
Date: Thu, 20 Oct 2016 08:52:58 GMT
Server: Python/3.5 GNS3/2.0.0dev2
X-Route: /v2/projects/{project_id}/snapshots

{
    "created_at": 1476953578,
    "name": "snap1",
    "project_id": "d7a48971-8970-4028-89f7-057e1bc58042",
    "snapshot_id": "14e376d2-6cf9-4070-9e0e-d7a1170c5d63"
}