[1] Mattermost API Reference () https://api.mattermost.com/#tag/authentication

If successful, the response will contain a Token header and a user object in the body.

HTTP/1.1 200 OK

Set-Cookie: MMSID=hyr5dmb1mbb49c44qmx4whniso; Path=/; Max-Age=2592000; HttpOnly

Token: hyr5dmb1mbb49c44qmx4whniso