# Apollo (API Key) + Gmail — Pipedream Connect

> Connect a user's Apollo (API Key) and Gmail accounts and expose tools for both apps directly in your product or your agent.

- Apps: Apollo (API Key) (`apollo_io`) + Gmail (`gmail`)
- This page (HTML): https://pipedream.com/apps/apollo-io/integrations/gmail
- 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: apollo_io,gmail`
- `x-pd-app-slug` takes a comma-separated list, so `apollo_io,gmail` 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": "apollo_io,gmail",
      },
    },
  },
)

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

const { tools } = await mcp.listTools()

// One list, both toolsets: Apollo (API Key) and Gmail tools arrive
// together, each keyed by its own app's slug.

// e.g. run Add Contacts to Sequence:
const result = await mcp.callTool({
  name: "apollo_io-add-contacts-to-sequence",
  arguments: {
    sequenceId: "Sequence ID",
    contactIds: ["Contact IDs"],
  },
})
```

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 [apolloIoTools, gmailTools] =
  await Promise.all([
    pd.components.list({ app: "apollo_io" }),
    pd.components.list({ app: "gmail" }),
  ])

// 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)

## Apollo (API Key)

- API slug: `apollo_io` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: CRM
- Website: https://www.apollo.io
- App page (HTML): https://pipedream.com/apps/apollo-io
- Tools: 27 actions · 4 triggers

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

### Actions (top 8 of 27)

- [Add Contacts to Sequence](https://pipedream.com/apps/apollo-io/actions/add-contacts-to-sequence.md) — `apollo_io-add-contacts-to-sequence`
- [Create Account](https://pipedream.com/apps/apollo-io/actions/create-account.md) — `apollo_io-create-account`
- [Create Contact](https://pipedream.com/apps/apollo-io/actions/create-contact.md) — `apollo_io-create-contact`
- [Create Opportunity](https://pipedream.com/apps/apollo-io/actions/create-opportunity.md) — `apollo_io-create-opportunity`
- [Create Or Update Contact](https://pipedream.com/apps/apollo-io/actions/create-update-contact.md) — `apollo_io-create-update-contact`
- [Get Opportunity](https://pipedream.com/apps/apollo-io/actions/get-opportunity.md) — `apollo_io-get-opportunity`
- [Get Organization](https://pipedream.com/apps/apollo-io/actions/get-organization.md) — `apollo_io-get-organization`
- [List Account ID Options](https://pipedream.com/apps/apollo-io/actions/list-account-id-options.md) — `apollo_io-list-account-id-options`

### Triggers (4)

- [Account Updated](https://pipedream.com/apps/apollo-io/triggers/account-updated.md) — `apollo_io-account-updated`
- [Contact Updated](https://pipedream.com/apps/apollo-io/triggers/contact-updated.md) — `apollo_io-contact-updated`
- [New Account Created](https://pipedream.com/apps/apollo-io/triggers/account-created.md) — `apollo_io-account-created`
- [New Contact Created](https://pipedream.com/apps/apollo-io/triggers/contact-created.md) — `apollo_io-contact-created`

## Gmail

- API slug: `gmail` (use in MCP headers and tool keys)
- Auth: OAuth (Pipedream-managed)
- Categories: Communication
- Website: https://mail.google.com
- Managed OAuth scopes: `https://www.googleapis.com/auth/gmail.labels` · `https://www.googleapis.com/auth/gmail.send` · `https://www.googleapis.com/auth/gmail.modify` · `https://www.googleapis.com/auth/gmail.compose` · `https://www.googleapis.com/auth/gmail.settings.basic`
- App page (HTML): https://pipedream.com/apps/gmail
- Tools: 21 actions · 5 triggers

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

### Actions (top 8 of 21)

- [Add Label to Email](https://pipedream.com/apps/gmail/actions/add-label-to-email.md) — `gmail-add-label-to-email`
- [Archive Email](https://pipedream.com/apps/gmail/actions/archive-email.md) — `gmail-archive-email`
- [Bulk Archive Emails](https://pipedream.com/apps/gmail/actions/bulk-archive-emails.md) — `gmail-bulk-archive-emails`
- [Create Draft](https://pipedream.com/apps/gmail/actions/create-draft.md) — `gmail-create-draft`
- [Create Label](https://pipedream.com/apps/gmail/actions/create-label.md) — `gmail-create-label`
- [Delete Email](https://pipedream.com/apps/gmail/actions/delete-email.md) — `gmail-delete-email`
- [Delete Label](https://pipedream.com/apps/gmail/actions/delete-label.md) — `gmail-delete-label`
- [Download Attachment](https://pipedream.com/apps/gmail/actions/download-attachment.md) — `gmail-download-attachment`

### Triggers (top 4 of 5)

- [New Attachment Received](https://pipedream.com/apps/gmail/triggers/new-attachment-received.md) — `gmail-new-attachment-received`
- [New Email Matching Search](https://pipedream.com/apps/gmail/triggers/new-email-matching-search.md) — `gmail-new-email-matching-search`
- [New Email Received](https://pipedream.com/apps/gmail/triggers/new-email-received.md) — `gmail-new-email-received`
- [New Labeled Email](https://pipedream.com/apps/gmail/triggers/new-labeled-email.md) — `gmail-new-labeled-email`

---

- Apollo (API Key): https://pipedream.com/apps/apollo-io.md · Gmail: https://pipedream.com/apps/gmail.md
- All apps: https://pipedream.com/apps — index: https://pipedream.com/llms.txt
- Pipedream docs for agents: https://pipedream.com/docs/llms.txt