Glossary · Agents & tools
Agent Skill
A discoverable directory of procedural instructions whose entry point is `SKILL.md`, with optional references, scripts, and assets that a compatible runtime can load in stages.
Why it matters
It packages reusable task knowledge separately from one conversation while keeping deeper context and deterministic helpers available on demand.
In practice
Publish a compact name and routing description, load the workflow only after activation, and read branch-specific references when the task reaches them.
Common confusion
Activating a skill supplies context. It does not expose a tool, grant permission, create a sandbox, or prove that the resulting work is correct.
Related terms
Sources
Browse the learning paths to see this term in context — every lesson is free to read.