---
name: playwright-dev
description: Explains how to develop Playwright - add APIs, MCP tools, CLI commands, and vendor dependencies.
---

# Playwright Development Guide

See [CLAUDE.md](../../../CLAUDE.md) for monorepo structure, build/test/lint commands, and coding conventions.

## Detailed Guides

- [Library Architecture](library.md) — client/server/dispatcher structure, protocol layer, DEPS rules
- [Adding and Modifying APIs](api.md) — define API docs, implement client/server, add tests
- [MCP Tools and CLI Commands](tools.md) — add MCP tools, CLI commands, config options
- [Vendoring Dependencies](vendor.md) — bundle third-party npm packages into playwright-core or playwright
- [Updating WebKit Safari Version](webkit-safari-version.md) — update the Safari version string in the WebKit user-agent