# GitLab + Slack — Pipedream Connect

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

- Apps: GitLab (`gitlab`) + Slack (`slack_v2`)
- This page (HTML): https://pipedream.com/apps/gitlab/integrations/slack-v2
- 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: gitlab,slack_v2`
- `x-pd-app-slug` takes a comma-separated list, so `gitlab,slack_v2` 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": "gitlab,slack_v2",
      },
    },
  },
)

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

const { tools } = await mcp.listTools()

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

// e.g. run Approve Merge Request:
const result = await mcp.callTool({
  name: "gitlab-approve-merge-request",
  arguments: {
    projectId: "Project",
    mergeRequestIid: 10,
  },
})
```

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 [gitlabTools, slackV2Tools] =
  await Promise.all([
    pd.components.list({ app: "gitlab" }),
    pd.components.list({ app: "slack_v2" }),
  ])

// 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)

## GitLab

- API slug: `gitlab` (use in MCP headers and tool keys)
- Auth: OAuth (Pipedream-managed)
- Categories: Developer Tools
- Website: https://about.gitlab.com/
- Managed OAuth scopes: `api` · `read_user` · `read_repository` · `write_repository` · `read_registry` · `sudo` · `openid` · `profile` · `email`
- App page (HTML): https://pipedream.com/apps/gitlab
- Tools: 28 actions · 10 triggers

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

### Actions (top 8 of 28)

- [Approve Merge Request](https://pipedream.com/apps/gitlab/actions/approve-merge-request.md) — `gitlab-approve-merge-request`
- [Create Branch](https://pipedream.com/apps/gitlab/actions/create-branch.md) — `gitlab-create-branch`
- [Create Epic](https://pipedream.com/apps/gitlab/actions/create-epic.md) — `gitlab-create-epic`
- [Create issue](https://pipedream.com/apps/gitlab/actions/create-issue.md) — `gitlab-create-issue`
- [Create Merge Request](https://pipedream.com/apps/gitlab/actions/create-merge-request.md) — `gitlab-create-merge-request`
- [Create Merge Request Comment](https://pipedream.com/apps/gitlab/actions/create-merge-request-comment.md) — `gitlab-create-merge-request-comment`
- [Create Merge Request Review](https://pipedream.com/apps/gitlab/actions/create-merge-request-review.md) — `gitlab-create-merge-request-review`
- [Get Issue](https://pipedream.com/apps/gitlab/actions/get-issue.md) — `gitlab-get-issue`

### Triggers (top 4 of 10)

- [New Commit (Instant)](https://pipedream.com/apps/gitlab/triggers/new-commit.md) — `gitlab-new-commit`
- [New Branch (Instant)](https://pipedream.com/apps/gitlab/triggers/new-branch.md) — `gitlab-new-branch`
- [New Project](https://pipedream.com/apps/gitlab/triggers/new-project.md) — `gitlab-new-project`
- [New Audit Event (Instant)](https://pipedream.com/apps/gitlab/triggers/new-audit-event.md) — `gitlab-new-audit-event`

## Slack

- API slug: `slack_v2` (use in MCP headers and tool keys)
- Auth: OAuth (Pipedream-managed)
- Categories: Communication
- Website: https://slack.com
- Managed OAuth scopes: `chat:write` · `chat:write.customize` · `chat:write.public` · `files:read`
- App page (HTML): https://pipedream.com/apps/slack-v2
- Tools: 50 actions · 9 triggers

Full tool list, API proxy, and SDK quickstart: https://pipedream.com/apps/slack-v2.md

### Actions (top 8 of 50)

- [Send Message to Channel](https://pipedream.com/apps/slack-v2/actions/send-message-to-channel.md) — `slack_v2-send-message-to-channel`
- [Add Emoji Reaction](https://pipedream.com/apps/slack-v2/actions/add-emoji-reaction.md) — `slack_v2-add-emoji-reaction`
- [Add Reaction](https://pipedream.com/apps/slack-v2/actions/add-reaction.md) — `slack_v2-add-reaction`
- [Archive Channel](https://pipedream.com/apps/slack-v2/actions/archive-channel.md) — `slack_v2-archive-channel`
- [Browse Files](https://pipedream.com/apps/slack-v2/actions/browse-files.md) — `slack_v2-browse-files`
- [Build and Send a Block Kit Message](https://pipedream.com/apps/slack-v2/actions/send-block-kit-message.md) — `slack_v2-send-block-kit-message`
- [Create a Channel](https://pipedream.com/apps/slack-v2/actions/create-channel.md) — `slack_v2-create-channel`
- [Create Reminder](https://pipedream.com/apps/slack-v2/actions/create-reminder.md) — `slack_v2-create-reminder`

### Triggers (top 4 of 9)

- [New Channel Created (Instant)](https://pipedream.com/apps/slack-v2/triggers/new-channel-created.md) — `slack_v2-new-channel-created`
- [New Interaction Events (Instant)](https://pipedream.com/apps/slack-v2/triggers/new-interaction-event-received.md) — `slack_v2-new-interaction-event-received`
- [New Keyword Mention (Instant)](https://pipedream.com/apps/slack-v2/triggers/new-keyword-mention.md) — `slack_v2-new-keyword-mention`
- [New Message In Channels (Instant)](https://pipedream.com/apps/slack-v2/triggers/new-message-in-channels.md) — `slack_v2-new-message-in-channels`

---

- GitLab: https://pipedream.com/apps/gitlab.md · Slack: https://pipedream.com/apps/slack-v2.md
- All apps: https://pipedream.com/apps — index: https://pipedream.com/llms.txt
- Pipedream docs for agents: https://pipedream.com/docs/llms.txt