invalid_idempotency_key

Malformed Idempotency-Key · HTTP 400

What causes this

The Idempotency-Key header was present but not a usable value.

How to fix it

Use a unique string per logical operation — a UUID is the usual choice.

What the response looks like

{
  "error": {
    "code": "invalid_idempotency_key",
    "status": 400,
    "message": "…",
    "hint": "…",
    "request_id": "req_…",
    "docs_url": "https://cloud.ngentix.ai/docs/errors/invalid_idempotency_key"
  }
}

Quote the request_id if you contact support — it identifies your exact request in our logs.