Handling AI agent refunds without paying twice: signatures, idempotency and limits in TypeScript
This story is from 2026-10-20. It is preserved in the archive; the latest stories are on the live feed.
AI assistants are starting to call businesses' systems on behalf of their users: "return the blue jacket", "move my appointment to Thursday". Reading an order is harmless. A refund moves money, and that's where the interesting engineering is. Here are the four failure modes I'd design for first, wi…
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- 2026-10-20 21:55 · DEV Community — AI
Handling AI agent refunds without paying twice: signatures, idempotency and limits in TypeScript