0n3
MCP servers · Calendly · MCP server

Connect Codex CLI to Calendly

One line gives Codex CLI your Calendly account as tools: 3 endpoints, events, event types, more, called with your own connection. No key in the prompt, a receipt for every call, revoke Codex CLI's access alone any time.

Get the line for Codex CLIConnect Calendly first

Three steps

  1. Create a free 0n3 account and connect Calendly. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Codex CLI. OpenAI's terminal agent reads 0n3 over Streamable HTTP with a token from your environment.
  3. Ask Codex CLI: whoami. Then: "List events in Calendly".
Put the token in your environment
export ON3_TOKEN="<your 0n token>"

Add it to your shell profile so Codex finds it next time.

The line above carries a placeholder; 0n3.app/install mints a real key named for Codex CLI and fills it in.

What Codex CLI can then do in Calendly

Events · List scheduled events1
List eventsGET /scheduled_events
Event types · List event types1
List event typesGET /event_types
More · Everything else this app exposes.1
Get an userGET /users/me

Calendly in other AI clients

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Codex CLI with other apps

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