refund

Refund one sealed payment through Runx Hosted with bounded authority, approval, idempotency, and readback.

SKILL.md

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Refund

Use this when you are the merchant reversing all or part of a confirmed payment. Choose its original connector and account: Stripe, PayPal or Coinbase CDP for x402. A buyer paying a merchant uses pay; collecting a payment belongs to charge. A refund never changes processor to work around a failed readback.

Inspect runx connector inspect <connector> and use the refund operation's input_schema to construct request. Supply original account/payment identity, exact amount and currency, and a stable caller-owned idempotency_seed. PayPal also requires an explicit API host, canonical decimal precision and the original refundable capture status. Its sandbox host requires a matching sandbox app. Never put provider keys, wallet keys, card data or tokens in these inputs.

Confirm the original relationship

Native admission derives the outgoing amount from the exact provider request before budgeting and approval. There is no rounding or FX conversion. A USD limit refuses a currency it cannot count. The provider reads the original payment on its account and atomically enforces the remaining refundable amount, including prior or concurrent refunds. Local and hosted credential custody use the same declared connector contract.

Stripe independently confirms the refund against the original PaymentIntent and currency. PayPal independently confirms the original capture and exact refund amount, currency and complete capture relationship. Coinbase CDP retains its original settlement evidence and separate refund readback. Only confirmed succeeded, COMPLETED or x402 settled evidence completes the respective lane. The result is that provider's bounded native packet, not a fabricated universal payment record.

Unknown and pending outcomes

A provider acknowledgement or HTTP success is not a completed refund. Stop on unknown payment, wrong account/currency, excess remaining amount, denied approval, pending/refused refund or unavailable readback. Preserve the original provider reference, request key and native receipt. Resume the original effect at readback; do not submit a second refund under another key. An unknown write without an acknowledgement needs reconciliation, not a new financial action.

A composed caller supplies the same original collection evidence and key. This skill does not collect again, replace the original payment, send a customer message or update a ledger on the caller's behalf.