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Tool Design

1 article

A bold vintage screen-print illustration in cream, slate indigo and rust red of a large geometric padlock with a blank sticky note on its body and a small key lying out of reach beside it.

Development

MCP Error Messages Written for Humans Hurt the Smartest Agents Most

A 28 September 2026 preprint finds MCP servers' developer-facing error steps make capable agents fail more, and that naming a server tool in the step fixes it.