Idempotency - NSFW API

The optional Idempotency-Key header protects a generation operation from accidental duplicate requests, including retries after a client timeout.

Idempotency-Key: your-operation-id

Request	Result
Same key and same normalized body	Returns the original operation
Same key and different body	`409 idempotency_conflict`
No idempotency key	Always creates a new independent job

Use a unique, stable value for one logical operation. Do not reuse a key for unrelated generations.

Last modified on September 17, 2026