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

curl -i -X POST 'http://localhost:3080/v2/projects/35811c40-3b2c-4966-8285-4946ec75d5a0/snapshots' -d '{"name": "snap1"}'

POST /v2/projects/35811c40-3b2c-4966-8285-4946ec75d5a0/snapshots HTTP/1.1
{
    "name": "snap1"
}


HTTP/1.1 201
Connection: close
Content-Length: 170
Content-Type: application/json
Date: Wed, 23 Oct 2019 13:46:05 GMT
Server: Python/3.6 GNS3/2.2.1dev1
X-Route: /v2/projects/{project_id}/snapshots

{
    "created_at": 1571838360,
    "name": "snap1",
    "project_id": "35811c40-3b2c-4966-8285-4946ec75d5a0",
    "snapshot_id": "df092df6-2f76-4182-a694-6612ee9bf145"
}