Glossary
Idempotency key
A client-supplied UUID used by the server to deduplicate retried mutation requests. Replays return the original response.
Every RateStack mutation accepts Idempotency-Key. The server caches the response keyed by (apiKey, idempotencyKey, body-hash) for 24 hours. Replays with the same key return the cached response — preventing duplicate locks, duplicate webhooks, duplicate imports.
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