mcpengine/servers/calendly

Calendly MCP Server

Complete Model Context Protocol (MCP) server for Calendly API v2 with 27 tools and 12 React UI apps.

Features

🛠️ 27 MCP Tools

Events (8 tools)

• calendly_list_scheduled_events - List events with filters
• calendly_get_event - Get event details
• calendly_cancel_event - Cancel an event
• calendly_list_event_invitees - List invitees for an event
• calendly_get_invitee - Get invitee details
• calendly_list_no_shows - List no-shows
• calendly_mark_no_show - Mark invitee as no-show
• calendly_unmark_no_show - Remove no-show status

Event Types (3 tools)

• calendly_list_event_types - List event types
• calendly_get_event_type - Get event type details
• calendly_list_available_times - List available time slots

Scheduling (3 tools)

• calendly_create_scheduling_link - Create single-use scheduling link
• calendly_list_routing_forms - List routing forms
• calendly_get_routing_form - Get routing form details

Users (3 tools)

• calendly_get_current_user - Get current user info
• calendly_get_user - Get user by URI
• calendly_list_user_busy_times - List user busy times

Organizations (6 tools)

• calendly_get_organization - Get organization details
• calendly_list_organization_members - List members
• calendly_list_organization_invitations - List invitations
• calendly_invite_user - Invite user to organization
• calendly_revoke_invitation - Revoke invitation
• calendly_remove_organization_member - Remove member

Webhooks (4 tools)

• calendly_list_webhook_subscriptions - List webhooks
• calendly_create_webhook_subscription - Create webhook
• calendly_get_webhook_subscription - Get webhook details
• calendly_delete_webhook_subscription - Delete webhook

🎨 12 React MCP Apps

All apps feature dark theme and client-side state management:

1. Event Dashboard (src/ui/react-app/event-dashboard) - Overview of scheduled events
2. Event Detail (src/ui/react-app/event-detail) - Detailed event information
3. Event Grid (src/ui/react-app/event-grid) - Calendar grid view
4. Event Type Manager (src/ui/react-app/event-type-manager) - Manage event types
5. Availability Calendar (src/ui/react-app/availability-calendar) - View available times
6. Invitee List (src/ui/react-app/invitee-list) - Manage event invitees
7. Scheduling Links (src/ui/react-app/scheduling-links) - Create scheduling links
8. Organization Members (src/ui/react-app/org-members) - Manage team members
9. Webhook Manager (src/ui/react-app/webhook-manager) - Manage webhooks
10. Booking Flow (src/ui/react-app/booking-flow) - Multi-step booking interface
11. No-Show Tracker (src/ui/react-app/no-show-tracker) - Track no-shows
12. Analytics Dashboard (src/ui/react-app/analytics-dashboard) - Metrics and insights

Installation

npm install
npm run build

Configuration

Set your Calendly API key as an environment variable:

export CALENDLY_API_KEY="your_api_key_here"

Get your API key from: https://calendly.com/integrations/api_webhooks

Usage

Stdio Mode (Default for MCP)

npm start

Use in your MCP client configuration:

{
  "mcpServers": {
    "calendly": {
      "command": "node",
      "args": ["/path/to/calendly/dist/main.js"],
      "env": {
        "CALENDLY_API_KEY": "your_api_key"
      }
    }
  }
}

HTTP Mode

npm run start:http

Server runs on http://localhost:3000

Endpoints:

• GET /health - Health check
• POST / - MCP requests (tools/list, tools/call, resources/list, resources/read)

API Client

The Calendly client (src/clients/calendly.ts) provides:

• ✅ Full Calendly API v2 support
• ✅ Bearer token authentication
• ✅ Automatic pagination handling
• ✅ Error handling with detailed messages
• ✅ Type-safe responses

Architecture

src/
├── clients/
│   └── calendly.ts          # Calendly API v2 client
├── tools/
│   ├── events-tools.ts      # Event management tools
│   ├── event-types-tools.ts # Event type tools
│   ├── scheduling-tools.ts  # Scheduling & routing tools
│   ├── users-tools.ts       # User management tools
│   ├── organizations-tools.ts # Organization tools
│   └── webhooks-tools.ts    # Webhook tools
├── types/
│   └── index.ts             # TypeScript definitions
├── ui/
│   └── react-app/           # 12 React MCP apps
├── server.ts                # MCP server setup
└── main.ts                  # Entry point (stdio + HTTP)

Development

Build

npm run build

Watch Mode

npm run dev

Run React Apps

Each app is standalone:

cd src/ui/react-app/event-dashboard
npm install
npm run dev

Resources

• Calendly API Documentation: https://developer.calendly.com/api-docs
• Model Context Protocol: https://modelcontextprotocol.io
• MCP SDK: https://github.com/modelcontextprotocol/typescript-sdk

License

MIT