# Cal.com + Twilio — Pipedream Connect

> Connect a user's Cal.com and Twilio accounts and expose tools for both apps directly in your product or your agent.

- Apps: Cal.com (`cal_com`) + Twilio (`twilio`)
- This page (HTML): https://pipedream.com/apps/cal-com/integrations/twilio
- One `external_user_id` owns both connected accounts, and each account stays independently revocable.

## One session, both toolsets (recommended)

- Endpoint: `https://remote.mcp.pipedream.net/v3`
- Headers: `Authorization: Bearer <token>` · `x-pd-project-id` · `x-pd-environment` · `x-pd-external-user-id` · `x-pd-app-slug: cal_com,twilio`
- `x-pd-app-slug` takes a comma-separated list, so `cal_com,twilio` is one session on one transport. Both toolsets arrive from a single `listTools()`, and a tool is called exactly as it would be in a single-app session.

```ts
import { Client } from "@modelcontextprotocol/sdk/client/index.js"
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const accessToken = await pd.rawAccessToken

const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": process.env.PIPEDREAM_PROJECT_ID!,
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "cal_com,twilio",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// One list, both toolsets: Cal.com and Twilio tools arrive
// together, each keyed by its own app's slug.

// e.g. run Cancel Booking:
const result = await mcp.callTool({
  name: "cal_com-delete-booking",
  arguments: {
    bookingId: "Booking ID",
    cancellationReason: "Cancellation Reason",
  },
})
```

Docs: [MCP guide](https://pipedream.com/docs/connect/mcp/developers.md)

## Both apps from your backend

```ts
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const externalUserId = "{external_user_id}" // any stable ID for this user in your system

const [calComTools, twilioTools] =
  await Promise.all([
    pd.components.list({ app: "cal_com" }),
    pd.components.list({ app: "twilio" }),
  ])

// One external user owns both connected accounts, so either app's tools
// run on their behalf with the same externalUserId.
```

Docs: [Managed auth guide](https://pipedream.com/docs/connect/managed-auth/quickstart.md) · [Tools guide](https://pipedream.com/docs/connect/components.md)

## Cal.com

- API slug: `cal_com` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: Business Management
- Website: https://cal.com
- App page (HTML): https://pipedream.com/apps/cal-com
- Tools: 7 actions · 4 triggers

Full tool list, API proxy, and SDK quickstart: https://pipedream.com/apps/cal-com.md

### Actions (7)

- [Cancel Booking](https://pipedream.com/apps/cal-com/actions/delete-booking.md) — `cal_com-delete-booking`
- [Create Booking](https://pipedream.com/apps/cal-com/actions/create-booking.md) — `cal_com-create-booking`
- [Create Booking (V2)](https://pipedream.com/apps/cal-com/actions/create-booking-v2.md) — `cal_com-create-booking-v2`
- [Get All Bookings](https://pipedream.com/apps/cal-com/actions/get-all-bookings.md) — `cal_com-get-all-bookings`
- [Get Bookable Slots](https://pipedream.com/apps/cal-com/actions/get-bookable-slots.md) — `cal_com-get-bookable-slots`
- [Get Booking](https://pipedream.com/apps/cal-com/actions/get-booking.md) — `cal_com-get-booking`
- [List Event Type ID Options](https://pipedream.com/apps/cal-com/actions/list-event-type-id-options.md) — `cal_com-list-event-type-id-options`

### Triggers (4)

- [Booking Cancelled](https://pipedream.com/apps/cal-com/triggers/booking-cancelled.md) — `cal_com-booking-cancelled`
- [Booking Ended](https://pipedream.com/apps/cal-com/triggers/booking-ended.md) — `cal_com-booking-ended`
- [Booking Rescheduled](https://pipedream.com/apps/cal-com/triggers/booking-rescheduled.md) — `cal_com-booking-rescheduled`
- [New Booking Created](https://pipedream.com/apps/cal-com/triggers/booking-created.md) — `cal_com-booking-created`

## Twilio

- API slug: `twilio` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: Communication
- Website: https://www.twilio.com/
- App page (HTML): https://pipedream.com/apps/twilio
- Tools: 24 actions · 5 triggers

Full tool list, API proxy, and SDK quickstart: https://pipedream.com/apps/twilio.md

### Actions (top 8 of 24)

- [Make a Phone Call](https://pipedream.com/apps/twilio/actions/make-phone-call.md) — `twilio-make-phone-call`
- [Check Verification Token](https://pipedream.com/apps/twilio/actions/check-verification-token.md) — `twilio-check-verification-token`
- [Create Verification Service](https://pipedream.com/apps/twilio/actions/create-verification-service.md) — `twilio-create-verification-service`
- [Delete Call](https://pipedream.com/apps/twilio/actions/delete-call.md) — `twilio-delete-call`
- [Delete Message](https://pipedream.com/apps/twilio/actions/delete-message.md) — `twilio-delete-message`
- [Download Recording Media](https://pipedream.com/apps/twilio/actions/download-recording-media.md) — `twilio-download-recording-media`
- [Get Call](https://pipedream.com/apps/twilio/actions/get-call.md) — `twilio-get-call`
- [Get Message](https://pipedream.com/apps/twilio/actions/get-message.md) — `twilio-get-message`

### Triggers (top 4 of 5)

- [New Incoming SMS (Instant)](https://pipedream.com/apps/twilio/triggers/new-incoming-sms.md) — `twilio-new-incoming-sms`
- [New Call (Instant)](https://pipedream.com/apps/twilio/triggers/new-call.md) — `twilio-new-call`
- [New Phone Number](https://pipedream.com/apps/twilio/triggers/new-phone-number.md) — `twilio-new-phone-number`
- [New Recording](https://pipedream.com/apps/twilio/triggers/new-recording.md) — `twilio-new-recording`

---

- Cal.com: https://pipedream.com/apps/cal-com.md · Twilio: https://pipedream.com/apps/twilio.md
- All apps: https://pipedream.com/apps — index: https://pipedream.com/llms.txt
- Pipedream docs for agents: https://pipedream.com/docs/llms.txt