Release Notes for Idempotency Support: 05/05/2025

We’ve introduced idempotency support for all POST endpoints via the X-Idempotency-Key request header. This helps prevent duplicate processing in case of retries or network issues.

• Repeated requests with the same key and identical body will return the original response.
• Responses now include an X-Idempotency-Status header (processed or replayed).
• A 400 error is returned if a reused key is sent with a different request body.

This makes retrying requests safer and more predictable — especially useful in distributed or unreliable environments. More details can be found at the guides.