🧪 A/B test your agent skills — find out if your SKILL.md actually helps the model or is just a placebo. Blind-graded trials, bootstrap confidence intervals, one verdict: HELPS / PLACEBO / HARMS. For Claude Code, Codex, Gemini CLI & Cursor skills.
npx add-skill sx4im/skillcheck🧪 A/B test your agent skills — find out if your SKILL.md actually helps the model or is just a placebo. Blind-graded trials, bootstrap confidence intervals, one verdict: HELPS / PLACEBO / HARMS. For Claude Code, Codex, Gemini CLI & Cursor skills.
My agent configs (Claude Code, Codex, OpenCode) — skills, hooks, scripts
Codex skill for integrating PonponPay SDKs into existing applications
Shared Claude Code skills for DuckDB extension development
Test prompts for regression after changes. Catch quality drops before they hit production. Zero dependencies.
🚀 Build powerful agents and configurations with the complete collection of Claude Code from an Anthropic hackathon winner, refined over 10+ months.
Detect privilege escalation and suspicious processes with process monitoring, file tracking, and SQLite logging for security teams