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The AI magic words

Ryan sits down with Tim O'Reilly, founder and CEO at O'Reilly Media, to talk about the role of books as user interfaces to knowledge, the power of "magic words" to extract better outputs from AI, and…

Tool Descriptions Are the Contract

This series started with a claim: MCP and REST are two doors into the same kitchen. Three posts later, the comments have pushed the argument down to its foundation.

  • Tool descriptions act as the API contract in MCP servers.
  • Descriptions appear three times across different files and formats.
  • A good description should state what the tool does, when to call it, and where values come from.

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