playwriter

Playwriter is an MCP server and CLI tool that connects AI agents to the user's already-running Chrome browser rather than spawning a fresh isolated instance. It works through a Chrome extension installed from the Web Store, which bridges the Playwright API to the active browser session, preserving existing logins, cookies, and extensions. Agents execute Playwright JavaScript snippets inside stateful sandboxes using the CLI command `playwriter -s <id> -e '<code>'`, with variables like `page`, `context`, and a persistent `state` object available across calls. Features include visual accessibility labels using Vimium-style color-coded overlays that generate `aria-ref` selectors for element targeting, CDP-based debugging and live code editing, network request interception, and screenshot capture with labeled elements. The tool integrates with Claude Code and other MCP-compatible agents via direct MCP server configuration or the `skills` package. Developers, QA engineers, and AI agent builders who need browser automation against authenticated sessions or bot-detection-sensitive sites benefit most from this approach.

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