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FAQ

How do I issue a refund?

You issue a refund yourself — it is merchant-initiated, never a customer-side reversal. You start from the invoice the customer paid, decide whether to return the full amount or part of it, and an operator with the right permission approves the return. halfin then signs the transaction and sends the value back to the customer on-chain. Because crypto payments are final and have no chargebacks, this deliberate, operator-approved send is the only way value goes back to a payer — there is no automatic claw-back to trigger.

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halfin FAQ — how crypto payments work end to endHow halfin invoicing, checkout, deposit addresses, payouts, conversion, and webhooks work. Browse every question or read the cross-cutting answers.How do refunds work?A halfin refund attaches to the paid invoice and returns value toward the original payer — operator-approved, full or partial, and traceable back to the sale.Who pays the fee on a refund?The network fee comes from your side. A refund is an on-chain send out of your balance, so you carry the chain's fee to move the funds back to the customer.Are API keys scoped?Yes. A halfin API key carries only the permissions you grant it, scoped to the operations it needs — a read or invoice key cannot release payouts.Are API requests rate limited?Yes. Public auth endpoints are rate limited per IP and authenticated API-key requests are limited too. Design clients to back off and retry idempotently.Are crypto payments final?Yes — a confirmed on-chain transfer is irreversible and there are no chargebacks. Finality is a property of the chain, which is what makes reconciliation clean.Are there chargebacks with crypto payments?No. A confirmed on-chain payment is final, so there are no card-style forced reversals. A refund is a deliberate action you choose to issue.Are there monthly or setup fees?halfin's commercial pricing is not published on this site yet, so there is no monthly or setup figure to quote here. Building in the sandbox is free.Assets and networks questionsFrequently asked questions drawn from the halfin assets and networks pages. Each one links to a standalone answer.Can a customer pay an invoice late?A deposit that lands after a halfin invoice expires fires invoice.late_deposit — the funds are credited and matched to the invoice, and you decide how to treat the order.Can a customer reuse the same deposit address?Yes. A halfin static deposit address is persistent, so repeat deposits to the same address credit the same customer — no new invoice or address per top-up.Can I auto-convert incoming payments to a stablecoin?Yes. halfin balance conversion can run automatically toward a target asset such as a stablecoin, so incoming payments settle in one currency on credit.