Add idempotency keys for POST /payments

Please support an Idempotency-Key header so retried payment requests don't create duplicate charges.

Demo User 2026-06-09 02:48:03

Any update on this? It's blocking a few of our workflows.

Oliver Grant 2026-06-09 20:40:30

Workaround for now: clear the cache and retry — a proper fix is on the way.

Demo User 2026-06-12 08:32:39

Closing as fixed. Please reopen if it resurfaces.

Oliver Grant 2026-06-12 22:16:39

Thanks for the detailed report — I can reproduce this on our side.