#API error design

Tagged API error design · show all articles

A rack of test servers in a bright workshop, most seated and running, one unit drawn half out on its rails for a version swap while a ticket printer beside the bench spools a freshly printed test-run receipt

Building a Production-Grade MCP Server

A tool schema is a contract offered to a caller that cannot ask a follow-up question mid-call. This is a practitioner's guide to writing that contract so it survives retries, versioning, and a model that will eventually call it wrong.

By Brecht Corbeel · August 12, 2026 · 17 min read

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