42min — Claude Code MCP server: what it does, how to install
Remote MCP server for the 42min scheduling platform that lets AI agents check calendars, handle booking workflows, and manage meeting availability.
claude mcp add --transport http meetings https://api.42min.us/mcpWhat 42min does
The server operates as a remote HTTP service hosted at https://api.42min.us/mcp. It exposes 43 scheduling tools to MCP clients like Claude Code, Cursor, or Codex. Authentication relies on personal access tokens or OAuth 2.1 with PKCE and dynamic client registration. Because scopes tie directly to the user profile, agents only view and modify events permitted for that account.
The platform lacks a test sandbox. All write calls immediately affect production by sending real calendar invites and dispatching actual emails to attendees. To protect against accidental double-booking during network retries, creation calls accept an Idempotency-Key, while PATCH /v1/bookings/{uid} checks ETags via If-Match to block conflicting edits.
What it helps with
- check calendar availability and free time slots
- create or cancel meeting bookings directly through agent prompts
- prevent duplicate reservations using idempotency keys
- configure meeting polls and event routing forms
Example prompts for the agent
- Check my open slots for tomorrow afternoon using 42min
- Book a 30-minute consultation with the client for Friday at 3 PM via 42min
- List all pending bookings scheduled for next week
How to install 42min
Platform CLI: remote server
claude mcp add --transport http meetings https://api.42min.us/mcpPlatform CLI: remote server
codex mcp add 42min --url https://api.42min.us/mcpConfig file
{
"mcpServers": {
"42min": {
"url": "https://api.42min.us/mcp"
}
}
}Config file
{
"servers": {
"42min": {
"type": "http",
"url": "https://api.42min.us/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http 42min https://api.42min.us/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about 42min
How to install 42min in Claude Code?
Run claude mcp add --transport http 42min https://api.42min.us/mcp in your terminal. Claude Code connects directly to the remote HTTP endpoint and discovers the OAuth metadata.
What does 42min do?
It gives coding assistants 43 specialized scheduling tools. Agents can read calendars, book meeting slots, configure routing forms, and update existing reservations.
Does 42min provide a test sandbox?
No staging environment is provided. Every mutating call updates real production records and triggers real email notifications, so test only on personal event types.
