How to integrate Anchor browser MCP with Codex

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Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Anchor browser MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Anchor browser with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Anchor browser MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

What is the Anchor browser MCP server, and what's possible with it?

The Anchor browser MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Anchor browser account. It provides structured and secure access to powerful web automation features, so your agent can fetch web content, manage browser sessions, control profiles, and interact with extensions on your behalf.

  • Automated webpage content retrieval: Instruct your agent to browse to any URL and fetch the fully rendered page content in HTML or markdown, enabling easy scraping or summarization.
  • Session and profile management: Let your agent create, list, or delete browser profiles, as well as start, end, or monitor multiple browsing sessions for different workflows or user contexts.
  • Browser extension control: Have the agent list all installed browser extensions, making it easy to audit and manage your browser environment programmatically.
  • Resource and file listing: Ask your agent to retrieve a list of files or resources uploaded during browser automation tasks, ensuring nothing gets lost in the shuffle.
  • Comprehensive session oversight: Quickly get an overview of all active browser sessions, their statuses, and terminate any or all sessions instantly for security or resource management needs.

Supported Tools & Triggers

Tools
Click MouseTool to perform a mouse click at specified coordinates within a browser session.
Copy Selected TextTool to copy currently selected text in a browser session to the clipboard.
Create IntegrationTool to create a new integration with a third-party service like 1Password.
Create or Update Task DraftTool to create or update the draft version of a task.
Create ProfileCreates a new browser profile from an active session.
Create TaskTool to create a new task or update an existing task with the same name.
Delete ExtensionTool to delete a browser extension and remove it from storage.
Delete IntegrationTool to delete an existing integration and remove its stored credentials.
Delete ProfileTool to delete a browser profile by ID.
Delete TaskTool to soft delete a task and all its versions.
Delete Task VersionTool to soft delete a specific version of a task.
Deploy TaskTool to deploy a task by creating a new version with auto-incremented version number.
Double Click MouseTool to perform a double click at specified coordinates in a browser session.
Drag and DropTool to perform a drag and drop operation from start coordinates to end coordinates within a browser session.
End All SessionsTool to terminate all active browser sessions at once.
End Browser SessionTool to end a specific browser session by ID.
Get Batch Session StatusTool to retrieve detailed status information for a specific batch including progress and errors.
Get Browser SessionTool to retrieve detailed information about a specific browser session.
Get Clipboard ContentTool to retrieve the current content of the clipboard from a browser session.
Get Latest Task VersionTool to retrieve the latest version of a task including the full base64 encoded code content.
Get Profile (v2)Tool to retrieve details of a specific profile by its name.
Get Session PagesTool to retrieve all pages associated with a specific browser session.
Get Task DraftTool to retrieve the draft version of a task, including the full Base64 encoded code content.
Get Task Execution ResultTool to retrieve a single task execution result by its ID.
Get Task MetadataTool to retrieve task metadata without downloading the full task code.
Get Task VersionTool to retrieve a specific version of a task, including the full code content.
Get Webpage ContentTool to retrieve rendered content of a webpage in HTML or Markdown format.
List Agent ResourcesList all agent resources (files) uploaded to a browser session.
List ExtensionsRetrieves all browser extensions uploaded by the authenticated user.
List IntegrationsTool to retrieve all integrations for the authenticated team.
List ProfilesTool to fetch all stored browser profiles.
List Session DownloadsTool to retrieve metadata of files downloaded during a browser session.
List Session RecordingsTool to list all recordings for a specific browser session.
List SessionsTool to list all browser sessions.
List Task ExecutionsTool to retrieve execution history for a specific task with filtering and pagination support.
List TasksTool to retrieve a paginated list of all tasks for the authenticated team.
List Task VersionsTool to retrieve all versions of a specific task, including draft and published versions.
Mouse MoveTool to move the mouse cursor to specified coordinates within a browser session.
Navigate to URLTool to navigate a browser session to a specified URL.
Paste TextTool to paste text at the current cursor position in a browser session.
Pause AgentTool to pause the AI agent for a specific browser session.
Pause Session RecordingTool to pause the video recording for a specific browser session.
Perform Keyboard ShortcutTool to perform a keyboard shortcut using specified keys in a browser session.
Perform Web TaskTool to perform autonomous web tasks using AI agents.
Mouse DownTool to perform a mouse button down action at specified coordinates within a browser session.
Publish Task VersionTool to publish a specific version of a task.
Release Mouse ButtonTool to release a mouse button at specified coordinates within a browser session.
Resume AgentTool to resume the AI agent for a specific browser session.
Resume Session RecordingTool to resume video recording for a specific browser session.
Run TaskTool to execute a task in a browser session with a specific or latest version.
Run Task by NameTool to execute a task by its name, always using the latest version.
Screenshot WebpageTool to take a screenshot of a specified webpage within a session.
Scroll SessionTool to perform a scroll action at specified coordinates within a browser session.
Set Clipboard ContentTool to set the content of the clipboard in a browser session.
Signal EventTool to signal a specific event to be received by other processes or sessions.
Start Browser SessionTool to start a new browser session with optional customizations.
Take ScreenshotTool to take a screenshot of the current browser session and return it as an image.
Type TextTool to type specified text with optional delay between keystrokes.
Update ProfileUpdates an existing browser profile with data from an active session.
Update Task MetadataUpdates task metadata (name and description).
Upload ExtensionTool to upload a new browser extension as a ZIP file for use in browser sessions.
Upload FileTool to upload a file to a browser session as an agent resource.
Upload Files to SessionTool to upload files directly to a browser session for use with web forms and file inputs.
Wait for EventBlocks execution until a specific named event is signaled or the timeout expires.

Conclusion

You've successfully integrated Anchor browser with Codex using Composio's MCP server. Now you can interact with Anchor browser directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Anchor browser operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1000+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Anchor browser operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

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FAQ

What are the differences in Tool Router MCP and Anchor browser MCP?

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

Can I use Tool Router MCP with Codex?

Yes, you can. Codex 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 Anchor browser tools.

Can I manage the permissions and scopes for Anchor browser while using Tool Router?

Yes, absolutely. You can configure which Anchor browser 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.

How safe is my data with Composio Tool Router?

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 Anchor browser data and credentials are handled as safely as possible.

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