How to integrate Browserless MCP with Grok Build

Connect Grok Build to Browserless MCP. Download all invoices from your dashboard, extract product details from a competitor's site, and more from your terminal, with authentication handled for you.

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Browserless is a headless browser automation service for running scripts and automations on web pages. It streamlines browser infrastructure, letting you automate anything from scraping to UI testing without local setup.

7 Tools

How to integrate Browserless MCP with Grok Build

Grok Build is xAI's terminal coding agent. It runs on Grok 4.5, plans its work before it acts, and can run multiple sub-agents in parallel. It also reads Claude Code's MCP configuration, so any server you already have in a .mcp.json is picked up with no changes.

In this guide, I will show you how to connect your Browserless account to Grok Build through Composio, so it can download all invoices from your dashboard, extract product details from a competitor's site, take a screenshot of your homepage after login, and more without leaving the terminal. Composio holds the OAuth tokens for you, and Grok Build only calls the tools you approve.

Also integrate Browserless with

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Why use Composio over a standalone MCP server?

  • Read and write access. Composio's Browserless integration lets Grok Build take real actions like creating drafts, sending updates, and labeling records, not just reading data.
  • 1,000+ SaaS toolkits out of the box. One endpoint gives you a full catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Wire up a single Composio server instead of maintaining a separate MCP entry for each app.
  • Smart, context-aware tool loading. Grok Build caps how many tools it holds in a single request. Composio loads only the tools a task needs, so you do not spend that budget on tools you are not using.
  • Cross-app automation. Chain actions across apps in one run. Pull a thread, summarize it in Notion, and post the highlights to Slack from a single prompt.

Prerequisites

  • Grok Build installed and signed in. Install with curl -fsSL https://x.ai/cli/install.sh | bash on macOS or Linux, or irm https://x.ai/cli/install.ps1 | iex on Windows PowerShell. On first launch Grok opens a browser to authenticate; for headless or CI use, set an XAI_API_KEY environment variable instead (create the key at console.x.ai).
  • Access to the Browserless account you want to connect.
  • The Composio MCP endpoint. Composio's server is remote and hosted, so there is nothing to run locally and no tunnel to set up.

Step-by-step: Connect Browserless to Grok Build

1. Install and verify Grok Build

Install the CLI, then restart your shell so the grok binary lands on your PATH:

bash
curl -fsSL https://x.ai/cli/install.sh | bash
which grok

On Windows, install with PowerShell instead: irm https://x.ai/cli/install.ps1 | iex. If which grok returns a path, you are set. Grok Build runs on Grok 4.5 by default; you can switch models inside the session with /model <name>.

2. Add the Composio server

Add Composio as a remote HTTP MCP server with the grok mcp add command:

bash
grok mcp add --transport http composio https://connect.composio.dev/mcp

You can also add and manage servers from inside a session. Run /mcps to open the extensions modal on the MCP tab, then add a new server and paste the Composio URL. Added this way, Grok auto-detects the name from the URL and lists the server as connect:

bash
https://connect.composio.dev/mcp
Grok Build /mcps extensions modal listing MCP servers Grok Build adding the Composio MCP server with its URL

Grok also reads Claude Code-style config, so an entry in ~/.grok/config.toml or a project .mcp.json works the same way.

3. Authenticate

Composio uses OAuth. In the /mcps modal, select the Composio server and press i to authenticate (Grok also triggers this browser flow automatically the first time it uses a Composio tool). Click Allow to authorize access. Grok stores the tokens under ~/.grok/mcp_credentials.json, and /mcps shows Composio as connected.

Grok Build prompting to authenticate the Composio MCP server Composio authorization screen with the Allow button for Grok Build

4. Start building

Ask Grok to work with your Browserless account through Composio. On the first Browserless action, Composio prompts you to connect the account through OAuth. Approve the scopes once, and Composio handles token refresh from there.

What you can do after connecting Browserless

  • Download all invoices from your dashboard
  • Extract product details from a competitor's site
  • Take a screenshot of your homepage after login
  • Generate a PDF of your latest blog post

Security + privacy notes (important)

  • Use least-privilege access. Grant only the Browserless scopes you actually need.
  • Review OAuth scopes before approving. Check that the requested scopes match what you expect Composio and Grok Build to do.
  • Keep write actions human-reviewed. Grok Build proposes a plan before it acts. Leave that approval step on for actions like sending messages or editing records.
  • Keep secrets out of version control. Your XAI_API_KEY and any tokens should never be committed. Use environment variables or a secrets manager.
TOOLS

Supported Tools

Every Browserless action and event your agent gets out of the box.

Download file using Puppeteer script

This tool allows downloading files that Chrome has downloaded during the execution of puppeteer code.

Execute Custom Function

A tool that allows executing custom Puppeteer scripts via HTTP requests.

Fetch HTML Content

This tool fetches the complete HTML content of a webpage using Browserless's content API.

Generate PDF from webpage

This tool generates a PDF from a specified webpage using browserless's PDF generation API.

Scrape webpage content using CSS selectors

A tool to extract structured content from a webpage by specifying CSS selectors.

Take Screenshot

A tool that captures a screenshot of a webpage using browserless's screenshot API.

Unblock Protected Content

This tool provides access to content from websites that implement bot protection mechanisms.

FRAMEWORKS

How to build Browserless MCP Agent with another framework

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ChatGPT Work

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Antigravity

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OpenAI Agents SDK logo

OpenAI Agents SDK

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Claude Agent SDK logo

Claude Agent SDK

Use Browserless MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Browserless MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Browserless MCP with Claude Cowork

Codex logo

Codex

Use Browserless MCP with Codex

Kimi Code logo

Kimi Code

Use Browserless MCP with Kimi Code

Cursor logo

Cursor

Use Browserless MCP with Cursor

VS Code logo

VS Code

Use Browserless MCP with VS Code

OpenCode logo

OpenCode

Use Browserless MCP with OpenCode

OpenClaw logo

OpenClaw

Use Browserless MCP with OpenClaw

Hermes logo

Hermes

Use Browserless MCP with Hermes

CLI logo

CLI

Use Browserless MCP with CLI

Google ADK logo

Google ADK

Use Browserless MCP with Google ADK

LangChain logo

LangChain

Use Browserless MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Browserless MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Browserless MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Browserless MCP with LlamaIndex

CrewAI logo

CrewAI

Use Browserless MCP with CrewAI

FAQ

Frequently asked questions

A standalone Browserless MCP server gives Grok Build a fixed set of Browserless tools tied to that one server. The Composio Tool Router lets Grok Build load tools from Browserless and many other apps on demand, based on the task, all through a single endpoint.

Yes. Grok Build ships with native MCP support. Add a server with the grok mcp add command, from the in-session /mcps modal, or by editing ~/.grok/config.toml. It also reads Claude Code-style .mcp.json files, so Grok Build discovers the tools automatically.

Yes. Grok Build has zero-migration compatibility with Claude Code's configuration, so the same Composio server entry works in both without edits.

Tokens, keys, and configuration are encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant, so your Browserless data and credentials are handled to that standard.

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