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Welcome to Browser Use Development!

We’re excited to have you join our community of contributors. This guide will help you set up your local development environment quickly and easily.

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Quick Setup

If you’re familiar with Python development, here’s the quick way to get started:

git clone https://github.com/browser-use/browser-use
cd browser-use
uv sync --all-extras --dev
# or pip install -U git+https://github.com/browser-use/browser-use.git@main

echo "BROWSER_USE_LOGGING_LEVEL=debug" >> .env

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Helper Scripts

We provide several convenient shell scripts in the bin/ directory to help with common development tasks:

# Complete setup script - installs uv, creates a venv, and installs dependencies
./bin/setup.sh

# Run all pre-commit hooks (formatting, linting, type checking)
./bin/lint.sh

# Run the core test suite that's executed in CI
./bin/test.sh

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Prerequisites

Browser Use requires Python 3.11 or higher. We recommend using uv for Python environment management.

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Detailed Setup Instructions

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Clone the Repository

First, clone the Browser Use repository:

git clone https://github.com/browser-use/browser-use
cd browser-use

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Environment Setup

  1. Create and activate a virtual environment:
uv venv --python 3.11
source .venv/bin/activate
  1. Install dependencies:
# Install the package in editable mode with all development dependencies
uv sync --all-extras

# Install the default browser
playwright install chromium --with-deps --no-shell

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Configuration

Set up your environment variables:

# Copy the example environment file
cp .env.example .env

Or manually create a .env file with the API key for the models you want to use set:

.env
OPENAI_API_KEY=...
ANTHROPIC_API_KEY=
AZURE_ENDPOINT=
AZURE_OPENAI_API_KEY=
GOOGLE_API_KEY=
DEEPSEEK_API_KEY=
GROK_API_KEY=
NOVITA_API_KEY=
BROWSER_USE_LOGGING_LEVEL=debug  # Helpful for development

You can use any LLM model supported by LangChain. See LangChain Models for available options and their specific API key requirements.

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Development

After setup, you can:

  • Try demos in the example library with uv run examples/simple.py
  • Run the linter/formatter with uv run ruff format examples/some/file.py
  • Run tests with uv run pytest
  • Build the package with uv build

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Linting

# Run the linter on the whole project (must pass for PR to be allowed to merge)
uv run pre-commit run --all-files
# or use our convenience script
./bin/lint.sh

# Install the linter & formatter pre-commit hooks to run automatically
pre-commit install --install-hooks

# Experimental: run the type checker
uv run type

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Tests

# Run all tests that run in CI
./bin/test.sh

# Run specific tests
uv run pytest                                                                         # run everything
uv run pytest tests/test_controller.py                                                # run a specific test file
uv run pytest tests/test_sensitive_data.py tests/test_tab_management.py               # run two test files
uv run pytest tests/test_tab_management.py::TestTabManagement::test_user_changes_tab  # run a single test

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Build

uv build
uv pip install dist/*.whl

# push build to PyPI (automatically run by Github Actions CI)
uv publish

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Getting Help

If you run into any issues:

  1. Check our GitHub Issues
  2. Join our Discord community for support

We welcome contributions! See our Contribution Guide for guidelines on how to help improve Browser Use.