Fail Closed on Bad JSON: A Contract Gate for Free-Tier Model Endpoints
This story is from 2026-11-05. It is preserved in the archive; the latest stories are on the live feed.
An endpoint that answers 200 OK with unparseable JSON is more dangerous than one that answers 503 . The 503 fails closed and your code takes the error path. The malformed 200 fails open, sails through three layers of your pipeline, and writes garbage into a database that looks fine until a human re…
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- 2026-11-05 15:46 · DEV Community — AI
Fail Closed on Bad JSON: A Contract Gate for Free-Tier Model Endpoints