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Feature detection lies: two things I learned shipping on WebMCP

This story is from 2026-08-30. It is preserved in the archive; the latest stories are on the live feed.

I spent eight days building a parliamentary-procedure engine on WebMCP — the emerging standard that lets a web page hand an AI agent a typed tool list through document.modelContext . The idea is one sentence: an action that is out of order should not exist to be called. Not greyed out, not refused…

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  1. 2026-08-30 13:00 · DEV Community — AI
    Feature detection lies: two things I learned shipping on WebMCP

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