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

curl -i -X POST 'http://localhost:3080/v2/projects/90cf6f4c-635d-470a-a4bd-7f098cac153b/snapshots' -d '{"name": "snap1"}'

POST /v2/projects/90cf6f4c-635d-470a-a4bd-7f098cac153b/snapshots HTTP/1.1
{
    "name": "snap1"
}


HTTP/1.1 201
CONTENT-LENGTH: 170
CONTENT-TYPE: application/json
DATE: Thu, 08 Jan 2015 16:09:15 GMT
SERVER: Python/3.5 GNS3/2.0.0dev1
X-ROUTE: /v2/projects/{project_id}/snapshots

{
    "created_at": 1471275495,
    "name": "snap1",
    "project_id": "90cf6f4c-635d-470a-a4bd-7f098cac153b",
    "snapshot_id": "5ef71f28-7a2f-4f9d-bc74-809ac51ee7c4"
}