AGENTS.md, CLAUDE.md, Cursor rules and Copilot instructions for 12 stacks, kept in sync with the tool changes we track every day.
- 🧰 agents-md-examples — 12 free stack kits, MIT, start here
- 📰 dev.to/piekwerk — daily coverage of coding-agent releases, guardrail changes and config breakage
- 🧮 AI agent mistake cost calculator — free tool
- 🛒 piekwerk.gumroad.com — paid kits: Launch Pack, Verify First, Security Audit Kit, Anti-Patterns Kit
