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The Open SourceLightweight AI Extension.

GreaseClaw is an ultra-lightweight, open-source Chrome extension that turns your existing browser into a self-operating AI Agent out-of-the-box. Get full AI browser-automation capabilities—53+ browser tools, 40+ MCP app integrations, and 11+ LLM providers—without downloading heavy software.Describe what you need in plain language and your browser handles the clicking, typing, and navigating. Privacy-first. Reimagined for the AI era.

https://greaseclaw.com/browser-agent
Agent Active
🔍 Tab 1: Search & DOM
⚡ Tab 2: MCP Tools
📊 Tab 3: Rich Output
GreaseClaw
Automating Multi-Tab Workflow
53+ Browser Tools • 40+ MCP integrations
100% Local
✨ Generated Rich Summary Claude 3.5 Sonnet

Multi-Source Market Analysis & Replay

Complete

GreaseClaw automatically extracted price data from 3 opened tabs, calculated key metrics, and formatted a visual summary table.

✓ 12 Tabs Processed ✓ MCP Sync Active
Performance Metric +85% Speed
Tool A Tool B Agent
Session ID: #gc-8842
[ 01 ]
Features

Browse.
Automate.
Build.

Your browser, supercharged with AI agents. From browsing to building — without leaving the tab.

SANDBOXED AGENT
BRING YOUR LLM
YOUR EXECUTIVE ASSISTANT
SEND EMAILS, CALENDAR USING MCP SERVERS
BEST BROWSER FOR AI AGENTS
USE WITH CLAUDE CODE, CODEX, OR GEMINI CLI
[ 02 ]
Use Cases

Built for every role.

From founders to developers — real workflows powered by GreaseClaw.

Cross-App Workflows

Founders

Daily briefings from Calendar, Slack highlights, and inbox summaries. One prompt, every morning, on autopilot.

MCP Server

Developers

Control the browser from Claude Code or Gemini CLI. Test staging sites, catch console errors, and file issues without leaving the terminal.

CRM + Email

Sales Reps

Pull open deals from Salesforce, draft follow-up emails for stale leads, and keep HubSpot notes up to date automatically.

Scheduled Scraping

Researchers

Scrape competitor pricing every morning, track changes over time, and organize findings in Google Sheets automatically.

Content + Social

Marketers

Draft social posts in your brand voice, schedule them, and get weekly engagement summaries posted to Slack.

Inbox + Calendar

Exec Assistants

Triage the inbox, flag urgent emails, create Notion tasks for action items, and block focus time on the calendar.

Figma + Jira

Designers

Pull Figma comments, turn feedback into Jira tickets, and post a summary to the design channel on Slack.

SwipeSwipe to exploreSwipe
[ 03 ]
Agent Features

A smarter agent added into your browser.

Memory, personality, and automation — all running locally.

[ 04 ]
FAQ

Frequently asked questions.

Everything you need to know about GreaseClaw.

GreaseClaw is a lightweight Chrome extension that adds full-featured AI agent capabilities directly into your existing browser. You don't need to install or switch to a separate browser — it runs right inside your current Google Chrome with full, identical automation features and complete privacy.

GreaseClaw supports 11+ providers including Moonshot Kimi, Anthropic Claude, Google Gemini (free tier available), OpenAI, OpenRouter (500+ models), and local models through Ollama and LM Studio. You can supply your own API keys and switch between providers anytime.

GreaseClaw currently supports macOS, Windows, and Linux. System requirements match Google Chrome or Safari standards.

GreaseClaw itself is completely free and open source. It includes built-in mid-tier models with a limited daily free usage quota. For heavy usage or access to premium models like ChatGPT and GPT-4, you can purchase additional quota or supply your own API keys.

GreaseClaw puts the AI agent directly inside your browser with 40+ built-in integrations and no technical setup, while OpenClaw is a self-hosted agent you message through WhatsApp, Telegram, or other chat apps. Read the full comparison →

Claude Cowork runs inside an isolated VM with no browser access, while GreaseClaw Cowork gives the agent full web automation plus 40+ app integrations alongside local file access. Read the full comparison →

Chrome DevTools MCP gives developer tools limited browser access through CDP, while GreaseClaw provides 53 browser automation tools plus 40+ app integrations in a lightweight AI extension. Read the full comparison →

Yes! We're fully open source. You can contribute through the GitHub repository, join our Discord community, or submit feature requests that receive direct responses.