Data Sources Beginner

Cal.com MCP Integration

2 min read Updated May 21, 2026
Bookings, availability, event types, attendees, and team calendar data from Cal.com via the official hosted MCP server with OAuth 2.1.

Cal.com is the scheduling layer behind many SaaS products and consulting practices. Connecting Cal.com to clariBI surfaces every booking, event type, and attendee record into your AI analyses.

Why connect Cal.com

Scheduling questions ("how many bookings did we get from the pricing-page widget last week?") usually require exporting CSVs or building reports manually.

With Cal.com connected, you can ask "Which event types had the most no-shows last month?", "Average meeting duration by host this quarter?", or "How many bookings came from the demo CTA in October?" and the AI engine routes through Cal.com.

How the connection works

clariBI talks to Cal.com through its hosted MCP server at https://mcp.cal.com/mcp. Authentication uses an OAuth flow that clariBI registers itself for (no developer console setup on your side). Tokens stay encrypted server-side and never leave clariBI in clear form.

sequenceDiagram
    actor U as You
    participant C as clariBI
    participant V as Cal.com
    U->>C: Click Authorize with Cal.com
    C->>V: Open OAuth authorization
    V-->>U: Grant read access?
    U->>V: Approve
    V-->>C: Authorization code
    C->>V: Exchange code for tokens
    V-->>C: Access + refresh tokens
    C->>C: Encrypt and store credentials
    C-->>U: Connection ready

Available tools

clariBI exposes the read-only Cal.com tools that the vendor's MCP server publishes at connection time. Write operations (create, update, delete, send, refund) are filtered out by a name-pattern blocklist before any tool reaches the analysis engine, so connecting Cal.com cannot modify data on the vendor side.

The exact tool inventory depends on the Cal.com features your account has access to. After connecting, try a few natural-language questions to see what Cal.com data clariBI can pull.

Data flow during analysis

When you ask a question that maps to Cal.com, the AI engine routes to the right tool, reads the result, and pairs the answer with a chart you can pin to a dashboard.

sequenceDiagram
    actor U as You
    participant C as clariBI
    participant AI as AI engine
    participant V as Cal.com
    U->>C: Ask a question about meeting and booking data
    C->>AI: Plan the analysis
    AI->>V: Call the right tool
    V-->>AI: Tool result
    AI->>AI: Summarize and chart
    C-->>U: Answer plus visual

Setting up the connection

  1. Open Data Sources in the clariBI sidebar.
  2. Click Add data source.
  3. Open the MCP Servers tab.
  4. Click the Cal.com card.
  5. Click Authorize with Cal.com.
  6. Sign in to Cal.com in the popup window and grant the requested read scopes.
  7. Back in clariBI, give your data source a name.
  8. Click Finish.

Permissions and data access

OAuth scoping is granted at authorize time on the Cal.com consent screen. clariBI requests read-only scopes for bookings, event types, and team data. No bookings can be created, modified, or cancelled. Disconnect from Cal.com settings or from clariBI Settings.

Troubleshooting

ErrorCauseFix
"Team selection missing"Your Cal.com account belongs to multiple teams.Pick a single team in Cal.com before authorizing.

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