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Your AI Agent Sent That Email Twice. Here's the Idempotency Fix

This story is from 2026-10-11. It is preserved in the archive; the latest stories are on the live feed.

An agent calls send_email . The mail API is slow, the HTTP client gives up at 30 seconds, and the model reads "timeout" as "not sent." It rewrites the subject line and sends again. The customer gets two emails. The obvious fix is to dedupe on the tool's arguments. It fails here, because the model c…

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  1. 2026-10-11 08:02 · DEV Community — AI
    Your AI Agent Sent That Email Twice. Here's the Idempotency Fix

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