agent skill — A reusable instruction file that teaches an agent how to do one job well — the procedure, the tools, and what counts as done.
Why it matters
Argues that the bottleneck to safe agentic autonomy is the scarce, expensive agent skillA reusable instruction file that teaches an agent how to do one job well — the procedure, the tools, and what counts as done.Full definition → of writing rigorous specifications, using formal-proof successes and reward-hacking failures as evidence for where agents do and don't generalize.