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Reproduce an MCP tool failure before blaming the agent

This story is from 2026-09-05. It is preserved in the archive; the latest stories are on the live feed.

When an agent reports that a tool failed, the report often collapses several different events into one vague error. Invalid input, a server-declared tool error, a timeout, a transport exit, and an output-schema rejection have different causes and different recovery choices. Treating them as the sam…

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  1. 2026-09-05 16:34 · DEV Community — AI
    Reproduce an MCP tool failure before blaming the agent

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