Free resources
Skills, templates & playbooks
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Free Claude skill
agent-second-brain — the Claude skill
Stop your AI agent from confidently hallucinating. Give it a second brain.
- SKILL.md — the full capture → organize → connect → retrieve-before-act protocol, installable in Claude Code
- STARTER.md — drop-in starter files for your .brain/ folder (decisions log, corrections, index, SOP/domain templates)
Free open-source tool
skillbank — the best agent skills on the internet, harvested
Your AI agent improvises on every subtask. The best solution already exists — as a text file on GitHub.
- The full engine — harvest, parse, embed (384-dim local/offline), cosine retrieve, LLM rerank. ~1,600 lines of Python.
- prompts/agent-system-prompt.md — paste into any agent to make skill retrieval a reflex, not an afterthought