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

curl -i -X POST 'http://localhost:3080/v2/projects/0ca9776f-2707-4e57-b31c-4e537652b158/snapshots' -d '{"name": "snap1"}'

POST /v2/projects/0ca9776f-2707-4e57-b31c-4e537652b158/snapshots HTTP/1.1
{
    "name": "snap1"
}


HTTP/1.1 201
Connection: close
Content-Length: 170
Content-Type: application/json
Date: Tue, 27 Nov 2018 15:09:54 GMT
Server: Python/3.6 GNS3/2.2.0dev5
X-Route: /v2/projects/{project_id}/snapshots

{
    "created_at": 1543331391,
    "name": "snap1",
    "project_id": "0ca9776f-2707-4e57-b31c-4e537652b158",
    "snapshot_id": "e3597135-7567-434e-ae9c-09d55cb0d1ec"
}