playwright-dev作者： microsoft

Guide for extending Playwright with new APIs, MCP tools, CLI commands, and vendored dependencies. Covers monorepo structure, build/test/lint workflows, and coding conventions via CLAUDE.md reference Includes detailed walkthroughs for implementing client/server APIs, writing tests, and modifying protocol layers Explains how to add MCP tools, CLI commands, and configuration options within the Playwright ecosystem Documents the vendoring process for bundling third-party npm packages into...

npx skills add https://github.com/microsoft/playwright --skill playwright-dev

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Playwright Development Guide

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

Detailed Guides

Library Architecture — client/server/dispatcher structure, protocol layer, DEPS rules
Adding and Modifying APIs — define API docs, implement client/server, add tests
MCP Tools and CLI Commands — add MCP tools, CLI commands, config options
Vendor Dependencies & Bundling — utilsBundle, coreBundle, babelBundle; adding vendored npm packages; DEPS.list; check_deps
Updating WebKit Safari Version — update the Safari version string in the WebKit user-agent
Bisecting Across Published Versions — reproduce regressions side-by-side from npm and diff node_modules/playwright/lib/ between versions
Dashboard - the UI powering the "playwright cli show" command, and how to work on it