비교
Agent Skills와 MCP: 어느쪽을 낼까
스킬은 파일로 절차를 가르칩니다. MCP는 살아 있는 도구를 엽니다. 대부분 팀은 둘 다 필요하고, 경계는 깨끗해야 합니다.
업데이트 2026-09-18 · 7 분
An Agent Skill teaches a procedure from files. MCP exposes live tools with input and output schemas. They are not rivals. They sit on opposite sides of a boundary: markdown versus a running process.
Side by side
| Agent Skill | MCP | |
|---|---|---|
| Payload | SKILL.md plus optional files | A server the agent can call |
| Discovery | YAML description | Tool names and schemas |
| Best for | Checklists, house style, multi-step writing | Tickets, databases, browsers, billed APIs |
| Fails when | You hide a live API inside prose | You stuff a 20-page playbook into a tool description |
A clean split
Use a skill to decide whether and in what order. Use MCP to do the privileged action. Example: a research skill tells the agent how to cite sources. An HTTP or browser MCP actually fetches the page.
If you are unsure, start with a skill. Promote a step to MCP only when the agent must touch a system that is not the working tree. The MCP Builder skill and the Skill Creator skill exist for those two jobs.