Recurring tasks (code review, tests, deploy checks) need long prompts. Skills encode steps and constraints in SKILL.md; clients match on description and auto-activate—like reusable expert modes.
Guides·Agent Skills
What is an Agent Skill?
Agent Skills are SKILL.md instruction packs that auto-load when a task matches—no need to paste prompts every time.
What Skills solve
Typical layout
A skill usually has: • SKILL.md (required: name, description, instructions) • scripts/, references/, assets/ (optional)
AgentHub detail pages generate install commands per client.
Skills vs MCP
MCP supplies tools (DB, APIs, browser). Skills supply workflows (how to review code, write PRs). Often combined: Skill defines process, MCP fetches data. See Skill vs MCP guide.