whereismyai
BrowserKitten
BrowserKitten is a Chrome extension acting as an AI web agent that executes tasks on the current browser tab using local, user-provided API keys.
BrowserKitten is a Chrome MV3 unpacked extension that treats a browser session as a programmable environment. It operates via a side panel to drive the current tab, execute guest JavaScript, and generate artifacts like sheets, documents, or HTML. Users must provide their own OpenAI-compatible API key, which is stored locally in the browser. The agent interacts with the browser through a service worker and an offscreen SessionWorkspaceService. This tool requires Chrome 135 or higher and must be loaded as an unpacked extension in developer mode.
BrowserKitten at a glance
Key features
- Side-panel based AI agent interface
- Execution of guest JavaScript against browser tabs
- Support for OpenAI-compatible API keys
- Artifact generation including sheets and documents
- Local API key storage via chrome.storage.local
- Browser control via service workers
Use it for
- Automating navigation and actions on live web pages
- Extracting and organizing web content into documents
- Executing custom scripts on browser pages
Companions
Tools that articles about BrowserKitten recommend using with it, each with its job.
- Steel — Run the agent loop on managed remote Chromium with proxies.
- Playwright — Hand-coded automation for the fixed, high-volume parts.
- Ollama — Any OpenAI-compatible local model, at no cost per task.
- LangChain — Compose exactly the agent your use case needs from model, tools, prompt, and middleware.
- CrewAI — Gives CrewAI agents a real browser.
Alternatives to BrowserKitten
- BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
- WebBrain — Runs locally or in the cloud with your choice of LLM and zero telemetry.
- Browser Use — Managed remote browsers built for protected sites at $0.02 an hour.
- Nanobrowser — Run multi-agent workflows using your own LLM API key directly in your browser.
- Claude in Chrome — Automates multi-tab web workflows and data entry securely.
- LobsterAI — Open-source desktop agent with local data storage and remote control via messaging apps.
- WebRun — Deploys visual AI agents that run recurring tasks without APIs or code.
- Botscent — Detects AI agents browsing your site with a 5 KB script and zero dependencies.
- GameTorch — Executes signed-in user agents in the browser through a strict capability manifest and runtime enforcement.
- AI Newtab — Generates a personalized daily homepage using browsing history and Claude.
- CowAgent — Open-source agent with multi-model and multi-channel support.
- Merlin — Run Claude Code and Codex on your own machines with your team.
All BrowserKitten alternatives