Codex and Cal
Connect Codex to Cal
Give your Codex agent access to Cal in Melso — 168 tools it can call while it works through a task.
Set it up in Melso
- 1In Melso, open Settings → Agent Apps and hit Connect on Cal.
- 2Finish the OAUTH2 / API_KEY sign-in in the window that opens. Melso stores the connection, not your credentials.
- 3Open your Codex agent, go to its Agent Apps tab, and allow Cal.
- 4Give the agent a task. It calls Cal itself when the work needs it.
What you get
What Cal gives your agent
The tools, permissions, and events Cal exposes — the same ones your agent can use once the app is authorized.
What you sign in with
Cal connects with OAUTH2 / API_KEY.
- Client id
- Client secret
- Base URL
Permissions
Cal does not break access down into granular permissions.
Tools Cal exposes
CAL_ADD_ATTENDEE
Add attendee
Tool to create a new attendee for an existing booking in Cal.com. Use when you need to add an additional participant to a scheduled event.
CAL_ADD_MEMBER_TO_TEAM_USING_ORG_AND_TEAM_ID