core

Reliable automation, in-depth debugging, and performance analysis in Chrome using Chrome DevTools and Puppeteer

Harness-native ECC operator layer - 67 agents, 271 skills, 92 legacy command shims, reusable hooks, rules, selective install profiles, and production-ready workflows for Claude Code, Codex, OpenCode, Cursor, and related agent harnesses

Access thousands of AI prompts and skills directly in your AI coding assistant. Search prompts, discover skills, save your own, and improve prompts with AI.

Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques