Build once, run on any agent: agent skills guide

Skills capture instructions in SKILL.md files but do not grant tools or permissions. They enable consistent execution across agents while maintaining environment-specific access. The approach emphasizes clear task boundaries, separation of project configuration from team standards, and human-in-the-loop checkpoints for critical decisions.

Summarised from the original article by an open-source model, then checked automatically: every number and English name must appear in the source. The original article is authoritative.