OpenTabs
About
Plugin-based MCP server that gives AI agents access to web applications through the user's authenticated browser session. Chrome extension with 100+ plugins for Slack, Discord, GitHub, Reddit, and more.
Details
- Author
- opentabs-dev
- Categories
- Productivity, Automation, Other
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Setup
Install OpenTabs in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/opentabs-dev/opentabs
Follow the installation instructions in the repository README, then restart your MCP client.
Your AI calls real web APIs through your browser session — no screenshots, no DOM scraping.
AI sending a Discord message and adding reactions — real API calls, not browser automation
- Installthe CLI and load the Chrome extension
- Connect— the extension bridges your browser to a local server
- Use— your AI calls web APIs through your authenticated session
No API keys. No OAuth setup. If you're logged in, your AI can use it.
Works with anyMCPclient. Don't want MCP? UseCLI modeinstead.
npm install -g @opentabs-dev/cli opentabs start
Load the extension from~/.opentabs/extensioninchrome://extensions/(Developer mode → Load unpacked).
opentabs plugin install <plugin-name>
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100+ plugins, ~2,000 tools.Slack, Discord, GitHub, Jira, Notion, Figma, AWS, Stripe, anda lot more. One command to install, works immediately.
Built-in browser tools.Screenshots, clicking, typing, network capture — works on any tab, no plugin needed.
Build your own.Scaffold a plugin in one command, publish to npm, anyone can install it. Or point your AI at any website — it discovers the APIs and builds the plugin for you.Plugin Development guide
Install a plugin, use it immediately — no restart needed
- Everything starts off.No tool executes until you explicitly enable it.
- Code review built in.Your AI reviews the plugin source before you enable it.
- Version-aware.Permissions reset when a plugin updates.
- Three permission levels.Off, Ask (confirmation dialog), or Auto — per-plugin or per-tool.
- Runs locally.No cloud. Full audit log. Anonymoustelemetry(opt-out).
git clone https://github.com/opentabs-dev/opentabs.git cd opentabs && npm install && npm run build npm run dev # tsc watch + MCP server + extension npm run check # build + type-check + lint + knip + test
MIT— Not affiliated with or endorsed by any third-party service.Full disclaimer.
Docs·Quick Start·Plugin Development·SDK Reference·Browser Tools·CLI Reference
Built withClaude Code,OpenCode,Ralph, andRetroUI.
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