# Twilio + Vapi — Pipedream Connect

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

- Apps: Twilio (`twilio`) + Vapi (`vapi`)
- This page (HTML): https://pipedream.com/apps/twilio/integrations/vapi
- 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: twilio,vapi`
- `x-pd-app-slug` takes a comma-separated list, so `twilio,vapi` 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": "twilio,vapi",
      },
    },
  },
)

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

const { tools } = await mcp.listTools()

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

// e.g. run Make a Phone Call:
const result = await mcp.callTool({
  name: "twilio-make-phone-call",
  arguments: {
    from: "From",
    to: "To",
  },
})
```

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

// 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)

## 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`

## Vapi

- API slug: `vapi` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: Artificial Intelligence (AI)
- Website: https://vapi.ai/
- App page (HTML): https://pipedream.com/apps/vapi
- Tools: 6 actions · 1 trigger

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

### Actions (6)

- [Create Call](https://pipedream.com/apps/vapi/actions/create-call.md) — `vapi-create-call`
- [List Assistant ID Options](https://pipedream.com/apps/vapi/actions/list-assistant-id-options.md) — `vapi-list-assistant-id-options`
- [List Phone Number ID Options](https://pipedream.com/apps/vapi/actions/list-phone-number-id-options.md) — `vapi-list-phone-number-id-options`
- [List Squad ID Options](https://pipedream.com/apps/vapi/actions/list-squad-id-options.md) — `vapi-list-squad-id-options`
- [Update Assistant Settings](https://pipedream.com/apps/vapi/actions/update-assistant-settings.md) — `vapi-update-assistant-settings`
- [Upload File](https://pipedream.com/apps/vapi/actions/upload-file.md) — `vapi-upload-file`

### Triggers (1)

- [New Conversation Started](https://pipedream.com/apps/vapi/triggers/new-conversation.md) — `vapi-new-conversation`

---

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