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Regen the Example, Freeze the Side Effect: Capability Cards for Internal APIs

This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.

An internal refunds page sat in the team wiki for six weeks. The curl example still parsed. The retry sentence did not. On a Tuesday rollback, an on-call engineer followed a generated note that called POST /v2/refunds "safe to retry." The handler was not idempotent. Two credits posted against one c…

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  1. 2026-09-12 17:56 · DEV Community — AI
    Regen the Example, Freeze the Side Effect: Capability Cards for Internal APIs

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