Invite a member
Upsert by email, so re-inviting somebody is not an error. Only meaningful while mode is invited_only.
Authorizations
MCPJam API key (sk_…). Create one at Settings → API keys. Guest sessions cannot use the API, and API keys cannot manage other API keys.
Path Parameters
ID of the hosted project that contains the server.
Scenario ID, as returned by publishing an environment or by the project's scenario reads.
Body
Response
The member list was updated.
Scenario metadata after an update. Deliberately WITHOUT accessVersion: a mode change bumps it upstream, but the envelope this route re-reads does not carry the new value — reporting a stale one would document a revocation signal the response cannot deliver. The publish response carries the real one.

