playwright-dev

Helps developers add new features and commands to the Playwright testing tool.

Installation

Run `npx skills add "https://github.com/microsoft/playwright" --skill "playwright-dev"` to install this skill, then follow its SKILL.md instructions for my next request.

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SKILL.mdShow the author's original SKILL.md

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

# Playwright Development Guide

See [AGENTS.md](../../../AGENTS.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
- [Vendor Dependencies & Bundling](vendor.md) — utilsBundle, coreBundle, babelBundle; adding vendored npm packages; DEPS.list; `check_deps`
- [Updating WebKit Safari Version](webkit-safari-version.md) — update the Safari version string in the WebKit user-agent
- [WebView (iOS Safari) Backend](webview.md) — `webkit/webview/` against stock Mobile Safari; provisional-target pause/resume; what's upstream vs Playwright patches; local + CI test setup
- [Bisecting Across Published Versions](bisect-published-versions.md) — reproduce regressions side-by-side from npm and diff `node_modules/playwright/lib/` between versions
- [Dashboard](dashboard.md) - the UI powering the "playwright cli show" command, and how to work on it

Ships with 9 supporting files:

api.md
bisect-published-versions.md
dashboard.md
library.md
tools.md
trace_system_guide.md
vendor.md
webkit-safari-version.md
webview.md

Mirrored from the author's public source. Install counts from the open skills registry.