Claude Skills Are Awesome, Maybe a Bigger Deal Than MCP

BlogSimon WillisonJun 14, 2025

AI Summary

Willison's contrarian read on Anthropic's Skills feature: organized folders of instructions, scripts, and resources that an agent loads on demand โ€” and why this might matter more than MCP for everyday harness design. Argues Skills solve the actual day-to-day problem (composable, version-controllable agent capabilities) more elegantly than MCP servers, which solve the boundary-crossing data-source problem. The kind of practitioner take that reframes the entire ecosystem conversation.

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