How to integrate Browserbase tool MCP with Atomic Agent

Connect Atomic Agent to Browserbase tool MCP. Start a new headless browser session now, download all artifacts from last session, and more using natural language, with authentication handled for you.

Browserbase tool logoBrowserbase tool
Api Key

Browserbase is a serverless platform for running and managing headless browsers at scale. It lets you automate and monitor browser tasks with Playwright, Puppeteer, and Selenium—no infrastructure headaches.

19 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Browserbase tool.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Browserbase tool account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Browserbase tool

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Browserbase tool to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Browserbase tool. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Browserbase tool account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Browserbase tool MCP server, and what's possible with it?

The Browserbase tool MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Browserbase account. It provides structured and secure access to your headless browser environments, so your agent can launch browser sessions, capture artifacts, retrieve debug info, and manage session contexts—all at scale and with zero manual setup.

  • Automated browser session management: Instantly create, retrieve, and update browser sessions to run automated browsing tasks in isolated environments.
  • Headless testing and monitoring: Let your agent spin up new browser contexts for advanced testing, monitoring, or web scraping workflows—no local infrastructure needed.
  • Artifact and log retrieval: Automatically collect session artifacts (like screenshots, HAR files, or logs) after browser tasks complete for audit, debugging, or analytics purposes.
  • Real-time session debugging: Fetch live debug URLs so your agent (or you!) can connect and troubleshoot active sessions on demand.
  • Comprehensive session tracking: List, filter, and inspect all your browser sessions, including metadata, statuses, and historical activity, to stay on top of your automation fleet.

Use Browserbase tool from Atomic Agent

With your account connected, ask Atomic Agent to work with Browserbase tool in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

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

Create a new browser context

Tool to create a new browser context.

Retrieve a browser context

Tool to retrieve details of a specific browser context.

Update Browser Context

Tool to update a specific browser context.

Create Browser Session

Tool to create a new browser session.

Delete a browser context

Tool to delete a browser context and all its stored data (cookies, localStorage, etc.

Delete a browser extension

Tool to delete an uploaded browser extension by its ID.

Delete Session Downloads

Tool to delete all file downloads from a specific browser session.

Retrieve a browser extension

Tool to retrieve details of a specific browser extension.

Retrieve a project

Tool to retrieve details of a specific project including settings and configuration.

Get project usage statistics

Tool to retrieve usage statistics for a project including browser minutes and proxy bytes consumed.

List Projects

Tool to list all projects for the authenticated account.

Retrieve a browser session

Tool to retrieve details of a specific browser session.

Retrieve Session Debug URLs

Tool to retrieve live debug URLs for a specific session.

Download Session Artifacts

Tool to download files from a specific session.

Retrieve Session Logs

Tool to retrieve logs of a specific session.

List Browser Sessions

Tool to list all browser sessions.

Update Browser Session

Tool to update the status of a specific browser session.

Upload Browser Extension

Tool to upload a browser extension for use in sessions.

Upload File to Session

Tool to upload files to a browser session for file input operations.

FAQ

Frequently asked questions

With a standalone Browserbase tool MCP server, the agents and LLMs can only access a fixed set of Browserbase tool tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Browserbase tool and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Browserbase tool tools.

Yes, absolutely. You can configure which Browserbase tool scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Browserbase tool data and credentials are handled as safely as possible.

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