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How to Connect Calendly to ChatGPT — via MCP

Drive Calendly scheduling from any AI agent: list booked events, fetch invitees, query event types, check availability windows, generate single-use scheduling links and cancel meetings. 12 tools, Bearer-token auth.

HCBy HelpCode teamUpdated 3 min read Open-source on GitHub
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Calendly

Calendly

Drive Calendly scheduling from any AI agent: list booked events, fetch invitees, query event types, check availability windows, generate single-use scheduling links and cancel meetings. 12 tools, Bearer-token auth.

tools

12

Region

INTL

Category

Scheduling

Authentication

Bearer Token

Required env vars

CALENDLY_PERSONAL_ACCESS_TOKEN
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  • Open-source on GitHub
    Open source · AGPL-3.0
  • Works with ChatGPT, Claude, Gemini
    Any MCP-compatible client

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Summary

Drive Calendly scheduling from any AI agent: list booked events, fetch invitees, query event types, check availability windows, generate single-use scheduling links and cancel meetings. 12 tools, Bearer-token auth.

Try asking

Example prompts for Calendly

Click any prompt to copy it. Paste into Claude, ChatGPT, Cursor, Gemini, Copilot or OpenClaw to run it against this connector.

Calendly · live via MCP
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Claude is AI and can make mistakes. Please double-check responses.

💡 No install? Use cloud.anythingmcp.com directly. Sign in, click Connectors → Calendly, paste your credentials, mint an MCP API key — done. No Docker, no git clone, no local server.

Calendly + ChatGPT

Drive Calendly scheduling from any AI agent: list booked events, fetch invitees, query event types, check availability windows, generate single-use scheduling links and cancel meetings. 12 tools, Bearer-token auth.

Prerequisites

See the full setup instructions baked into the connector (visible in the in-app store when you select the connector). The required environment variables for this connector are:

CALENDLY_PERSONAL_ACCESS_TOKEN

Step 1 — Get credentials

Setup:

  1. Sign in to https://calendly.com → Integrations & Apps → API & webhooks → Personal Access Tokens → Create new token.
  2. Give it a name (e.g. 'AnythingMCP'). The token is shown ONCE, copy it immediately. Personal Access Tokens never expire and inherit your user permissions.
  3. Set CALENDLY_PERSONAL_ACCESS_TOKEN to the token.

Authentication: Bearer token. Calendly also supports OAuth2 for multi-user apps but Personal Access Tokens are the right fit for single-account agent use.

…(continued in the in-app connector instructions)

Step 2 — Install the adapter

curl -fsSL https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml -o docker-compose.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d

Step 3 — Add the connector in ChatGPT

Your server URL: in AnythingMCP, open MCP Servers → the server this connector is on, and copy its URL (https://cloud.anythingmcp.com/mcp/…). Use it wherever this guide shows YOUR_SERVER_ID.

ChatGPT connects to MCP servers as custom apps in developer mode, available on paid plans (not on Free). On Business and Enterprise workspaces an admin may have to allow it first.

  1. In ChatGPT, open Settings → Security and login and turn on Developer mode.
  2. Go to chatgpt.com/plugins and click +.
  3. Enter a name and a short description, e.g. Name: Calendly.
  4. Under Connection, enter the MCP server URL https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID and create the connection.
  5. When ChatGPT asks, sign in to AnythingMCP (OAuth) and allow access.

Available tools

ToolWhat it does
calendly_get_current_userReturn the user the personal access token belongs to (whoami)
calendly_get_userGet any user by their URI
calendly_list_event_typesList the event types (meeting types: '30-min intro', 'demo call', etc
calendly_get_event_typeFetch a single event type's full config including custom questions, location options, color, kind, scheduling_url and pooling_type (for roun
calendly_list_event_type_available_timesReturn open availability slots for an event type between start_time and end_time
calendly_list_scheduled_eventsList booked events (meetings) for a user or organization, with optional status / date-range filters
calendly_get_scheduled_eventFetch one scheduled event by UUID
calendly_list_scheduled_event_inviteesList invitees (the people who booked) on a scheduled event
calendly_cancel_scheduled_eventCancel a scheduled event
calendly_create_single_use_scheduling_linkCreate a one-time-use booking URL for a specific event type
calendly_list_organization_membershipsList the members of an organization (Teams/Enterprise plan)
calendly_get_inviteeFetch a single invitee on a scheduled event by their invitee UUID

FAQ

Does the free ChatGPT plan work with custom MCP connectors? No. Custom MCP connections need developer mode, which is only on paid plans.

Next steps

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