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

curl -i -X POST 'http://localhost:3080/v2/projects/8e5574d9-d44a-488c-ba2e-b10b9ddf783a/snapshots' -d '{"name": "snap1"}'

POST /v2/projects/8e5574d9-d44a-488c-ba2e-b10b9ddf783a/snapshots HTTP/1.1
{
    "name": "snap1"
}


HTTP/1.1 201
Connection: close
Content-Length: 170
Content-Type: application/json
Date: Tue, 20 Nov 2018 08:48:57 GMT
Server: Python/3.6 GNS3/2.2.0dev5
X-Route: /v2/projects/{project_id}/snapshots

{
    "created_at": 1542703727,
    "name": "snap1",
    "project_id": "8e5574d9-d44a-488c-ba2e-b10b9ddf783a",
    "snapshot_id": "9ab0ef3d-4fdb-46a0-ac2d-509308c34ef9"
}