parchi is a free, open source browsers & extensions project written in TypeScript and released under MIT. It has 546 GitHub stars, 54 forks and 11 open issues, and was last pushed 25 hours ago. On this registry it ranks #130 of 133 tracked projects in Browsers & Extensions, with 5 head-to-head comparisons available.

Parchi

AI-powered browser copilot (Chrome/Firefox extension).

Chat-driven browser automation in a side panel: navigate, read, click, type, extract, and summarize.

Chrome MV3 Firefox License: MIT


⚠️ Safety Notice

Browser automation can perform sensitive actions on your behalf. Use this tool only if you understand and accept the risks:

  • automation may violate site terms of service
  • prompt-injection can cause unsafe actions
  • sensitive information can be exposed if you run untrusted prompts/pages

Always review model output and keep strict tool/domain controls enabled when needed.


📦 Installation

Chrome (recommended)

git clone https://github.com/0xSero/parchi.git
cd parchi
npm install
npm run build

Then:

  1. Open chrome://extensions
  2. Enable Developer mode
  3. Click Load unpacked
  4. Select dist/

Firefox

npm run build:firefox

Then load the generated extension from dist-firefox/ in about:debugging.


🔧 Configure a Model

Open the extension settings and configure an OpenAI-compatible provider:

  • OpenAI https://api.openai.com/v1
  • Anthropic-compatible
  • OpenRouter https://openrouter.ai/api/v1
  • Local (Ollama/LM Studio) http://localhost:11434/v1
  • any other OpenAI-compatible endpoint

You can set:

  • API key
  • endpoint/base URL
  • model ID
  • optional custom headers

✨ Core Features

  • streaming chat + tool execution timeline
  • browser tools (navigate, read, interact, tabs, screenshots)
  • profile-based model/provider configuration
  • orchestrator + subagent flow
  • session history and exports
  • tool permissions and domain allowlist controls

🏗 Repo Structure

Path Purpose
packages/extension/ Browser extension runtime + UI + tools
packages/backend/ Convex backend (auth/billing/proxy)
packages/shared/ Shared schemas, prompts, runtime types
scripts/ Build/release/check scripts
tests/ Unit/integration/e2e/orchestrator/perf harnesses

🔨 Development

npm install
npm run build
npm run typecheck
npm run lint
npm run test:unit
npm run test:integration
npm run test:e2e
npm run check:repo-standards

If you change sidepanel UI code, rebuild and reload the extension from dist/.


📄 License

MIT

Frequently asked questions

Is parchi free to use?

parchi is open source under the MIT licence. There is no licence fee and no seat count — you can self-host it or, where the project offers one, pay a vendor for a managed version instead.

What does parchi do?

Your AI friend right in your browser

What is parchi written in?

parchi is primarily written in TypeScript. Its source is publicly available at https://github.com/0xSero/parchi, and it has 546 GitHub stars.