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.

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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.

24 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 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 browser sessions, contexts, projects, recordings, logs, files, and extensions, so your agent can create sessions, manage reusable contexts, inspect browser activity, retrieve recordings, and monitor project usage on your behalf.

  • Browser session management: Have your agent create isolated browser sessions, check their status, list recent sessions, and release running sessions when work is complete.
  • Reusable browser contexts: Let the agent create, inspect, and update browser contexts that preserve settings across multiple sessions.
  • Session monitoring and debugging: Direct your agent to retrieve live debugging access, review captured network activity, and inspect session logs.
  • Recordings and session artifacts: Instruct your agent to retrieve session replays, request downloadable recordings, and download generated session files.
  • Projects, files, and extensions: Have your agent review projects and usage, upload files for browser forms, and upload or inspect browser extensions.

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.

Update Browser Context

Tool to update a specific browser context.

Create Browser Context

Create a reusable browser context; the API key can select the project.

Create Browser Session

Create an isolated Browserbase session and return its connection details.

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.

Download Session Artifacts

Download a completed session's generated files as a ZIP archive.

Get Browser Context

Return metadata for a browser context by ID.

Retrieve a browser extension

Tool to retrieve details of a specific browser extension.

Get Browserbase Project

Return project metadata, default timeout, and assigned concurrency.

Get project usage statistics

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

Get Browser Session

Return status, connection details, and timestamps for a browser session.

Get Session Debug URLs

Return live debugger and WebSocket URLs for a running browser session.

Get Session Logs

Return network request and response events captured during a browser session.

Get Session Replay

Return HLS replay metadata and page playlist paths for a recorded session.

Get Session Replay Page

Return the HLS M3U8 playlist for one recorded replay page.

List Browserbase Projects

List projects with their default timeout and assigned concurrency.

List Recording Downloads

Poll per-page MP4 assembly after requesting recording downloads until every page is COMPLETED or FAILED.

List Browser Sessions

List browser sessions, optionally filtered by status or user metadata.

Release Browser Session

Irreversibly request release of a running browser session, ending it before its configured timeout to avoid further charges.

Request Recording Downloads

Start asynchronous MP4 assembly for every recorded page of a completed session, then poll List Recording Downloads until every page is COMPLETED or FAILED.

Upload Browser Extension

Tool to upload a browser extension for use in sessions.

Upload Session File

Upload one file so browser interactions can select it in a file input field.

Upload Session Files

Upload multiple files to one browser session for file-input interactions.

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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