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Open ChatGPT Atlas

Community
Not a standard server
An open-source, free alternative to ChatGPT Atlas.

This is not a typical connect-and-use MCP server; read the source repository before using it.

How to install ↓ Compare GitHub source repository ↗
Category
Browser #31 of 32
Stars
★ 442 Very popular
Runtime
Node.js 18+
Credentials
API key / credential required
Last commit
⚠
33FMRS · D

This is an open-source browser extension and Electron browser project, not a project with a clearly documented MCP server interface. The README supports browser automation, sidebar chat, and Composio integration features, but provides no server manifest, MCP tool identifiers, transport details, client compatibility, or license information.

Strongest · Setup experience 10/20 Weakest · Reliability 2/20

Reliability
2/20
Security and permissions
7/20
Maintenance
5/20
Documentation
9/20
Setup experience
10/20
Why each score
Reliability 2/20
Only the README is provided; there is no server manifest, MCP initialization/tool-list handshake evidence, tests, CI, or error-handling evidence. The project appears to be a browser extension and Electron application rather than a verifiable MCP server, so core connection reliability is unconfirmed and heavily deducted.
Security and permissions 7/20
The README states that confirmation dialogs exist for sensitive actions, which is positive evidence. However, API keys are used directly by the extension, and browser automation plus 500+ external integrations can access substantial external data and cause side effects. Least privilege, key storage, data boundaries, and the full scope of confirmation are undocumented, so points are deducted.
Maintenance 5/20
The repository is not archived and has open issues, indicating possible ongoing maintenance. However, there is no evidence of releases, commit activity, dependency updates, a license, or a security-response channel. The unknown license is a significant deduction.
Documentation 9/20
The README covers runtime prerequisites, installation, build commands, API-key configuration, major modes, example prompts, and limited safety information. It does not document MCP tool parameters, protocol configuration, permission scope, cost limits, data flows, complete troubleshooting, or verified behavior, so the score remains modest.
Setup experience 10/20
The Node.js, npm, Chrome/Edge, and unpacked-extension steps are reasonably clear, and Electron build and launch commands are provided. However, there is no MCP client configuration, server launch path, or standard MCP integration guidance, and setup requires manual building, developer mode, and API keys, warranting deductions.

Static review · not runListed 2026-07-29

Read the FMRS scoring method →

Fit and risk

What it can accessUses the networkChanges third-party account dataControls a browser

Best for

  • Developers experimenting with browser automation.
  • Users who want AI browser capabilities in Chrome, Edge, or Electron.
  • Users who need access to Composio integrations.

Not for

  • Users seeking a documented MCP server transport or standard client configuration.
  • Users unwilling to provide a Google API key.
  • Production environments requiring confirmed official maintenance or a known license.

Required permissions

  • Requires browser-extension access to perform screenshots, clicks, typing, scrolling, and navigation on web pages.
  • Requires a Google API key; Tool Router mode additionally requires an optional Composio API key.
  • May access user-controlled web content and data from configured integrations.

Risks and side effects

  • Browser automation may perform sensitive actions; the project provides confirmation dialogs for actions such as checkout and payment.
  • The handling risk for API keys, web content, and integration data depends on configuration and usage.
  • The license is listed as unknown, so specific commercial or redistribution rights should not be assumed.

Setup

Before you start

Runtime：Node.js 18+

Requires Node.js 18+, npm, Chrome or Edge with Manifest V3 support, and a required Google API key. Run npm install and npm run build, then enable Developer mode at chrome://extensions/ and load the dist folder. To run the Electron browser, run npm run build:electron followed by npm run electron; development mode is available with npm run electron:dev. A Composio API key is only required for Tool Router mode.

Check that it works

Build with npm install and npm run build, then load the dist folder via 'Load unpacked' at chrome://extensions. After adding your Google API Key in Settings, prompt 'Take a screenshot of this page' in the sidebar chat; a returned screenshot confirms browser automation is working.

Troubleshooting

  1. Confirm that Node.js 18+ and npm are installed and that npm install completed successfully.
  2. Confirm that npm run build completed and that the dist folder was loaded in Chrome or Edge.
  3. Confirm that Developer mode is enabled for Manifest V3 extension loading.
  4. Confirm that the required Google API key is configured; when using Tool Router mode, check the Composio API key.
  5. After code changes, rebuild and reload the extension in the browser.

Things to try

Once connected, you can ask your AI assistant things like:

  • Navigate to reddit.com and scroll down
  • Click on the search box and type 'puppies'
  • Check my Gmail for unread messages
  • Create a GitHub issue titled 'Bug in login flow'

Use cases

Control browser navigation, clicks, typing, scrolling, and screenshots with natural-language instructions.
Access integrations such as Gmail, Slack, and GitHub through Composio Tool Router.
Use a sidebar chat interface from browser tabs.

Overview

Open ChatGPT Atlas is a browser automation project built as a Chrome or Edge extension, with a standalone Electron browser application. It provides Browser Tools mode, Tool Router mode, and a sidebar chat interface. Browser Tools mode uses Gemini 2.5 Computer Use for screenshots, clicks, typing, scrolling, and navigation; Tool Router mode can access integrations such as Gmail, Slack, and GitHub through Composio.

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Source revision 15a4261954a1 Data synced 2026-10-19 Read the FMRS scoring method