42min MCP ServerVerifiedFeatured

What is 42min MCP?

42min is a free meeting scheduling platform with a built-in remote MCP server. Connect Claude, ChatGPT, Claude Code, Cursor or any MCP client to your 42min account and manage your scheduling in plain language:

• "Am I free Thursday afternoon?"
• "Book Anna for 42 minutes next week."
• "Cancel my 3 pm and let the attendee know."
• "Create a poll to find a time for the team offsite."

The assistant acts as you, with your real dashboard role and permissions.

Endpoint

https://api.42min.us/mcp

Streamable HTTP transport. Sign in with OAuth 2.1 + PKCE (recommended, no keys to copy) or a personal access token as a Bearer header (useful for read-only access).

Tools (43)

Availability and slots: find_available_slots, check_slot, get_schedules, add_schedule_override, add_out_of_office, delete_out_of_office

Bookings and meetings: list_bookings, get_booking, create_booking, cancel_booking, reschedule_booking, list_meetings, set_meeting_no_show

Recurring meetings: list_recurring, get_recurring, create_recurring, pause_recurring, resume_recurring, end_recurring, update_recurring, change_recurring_host

Event types: list_event_types, get_event_type, set_event_type_status

Contacts: search_contacts, get_contact

Secret (single-use) links: create_single_use_links, list_single_use_links, delete_single_use_link

Roundtables (group scheduling polls): list_roundtables, get_roundtable, create_roundtable, publish_roundtable

Routing forms: list_routing_forms, get_routing_form, get_routing_form_stats, list_routing_responses, get_routing_response, evaluate_routing_form, set_routing_form_status, duplicate_routing_form

Profile and organization: get_me, list_users

Setup

Claude (web and desktop): Settings > Connectors > Add custom connector, paste https://api.42min.us/mcp, then sign in and approve.

ChatGPT: Settings > Apps & Connectors > Advanced settings > enable Developer mode, then Create, paste the endpoint and choose OAuth.

Claude Code:

claude mcp add --transport http 42min https://api.42min.us/mcp

Cursor, Windsurf and other clients:

{
  "mcpServers": {
    "42min": {
      "type": "http",
      "url": "https://api.42min.us/mcp"
    }
  }
}

Add "headers": { "Authorization": "Bearer <YOUR_PAT>" } to use a personal access token instead of OAuth.

Security

• Explicit consent screen; revoke any assistant from 42min at any time.
• Access follows your role (member, manager, admin); admins can switch MCP off org-wide.
• No credentials or private attendee tokens in tool responses.
• Attendee form answers are marked as data, not instructions (prompt-injection guard).
• Idempotent booking writes and the same rate limits as the public API.

About 42min

Free scheduling with no artificial limits: Google, Outlook, Apple iCloud and CalDAV calendars, Zoom, Google Meet and Teams, round robin and group events, routing forms, workflows with email and SMS reminders, Pipedrive, Zapier and n8n integrations, a public REST API with webhooks,. Multiple languages.

• Website: https://42min.us