everything-claude-code

This is a curated collection of configuration patterns: CLAUDE.md templates, skills, memory structures, security practices, and prompt engineering techniques. Consider it a performance tuning guide for AI-assisted development.

MIT licensed, JavaScript. The repo covers agent harness optimization: how to structure your CLAUDE.md for better context, how to write reusable skills, how to set up memory that persists between sessions, and security patterns to prevent prompt injection. It's not a tool you install. It's a reference architecture you adapt to your workflow.

Completely free. The repo is MIT licensed and the content is openly available. The ecc.tools website appears to offer additional resources but the core value is in the GitHub repo itself. Solo AI-assisted developers: this is the target audience. If you're using Claude Code, Codex, Cursor, or similar agents and haven't optimized your configuration, there are real gains here. Teams: useful as a starting template for standardizing agent configurations across developers.

The catch: this is a knowledge repo, not software. It's only as good as you make it. You need to read, understand, and adapt the patterns to your specific workflow. The star count is massive but the actual value depends on whether you're already using AI coding agents. If you're not, this is irrelevant. If you are, the CLAUDE.md patterns and skill structures alone are worth the read.