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FAQ

Why does halfin require KYB?

Because halfin needs to know who it is providing payment infrastructure to before that infrastructure moves real money. KYB — know your business — is the verification step that establishes who your business is and who controls it, and it is the gate between sandbox and live mode. The sandbox needs none of this: a sandbox key talks to the same API but moves only test data, so you can build the whole integration before verification is finished. KYB is required only where it matters — the moment a key would settle a real deposit or release a real payout.

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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.What happens during onboarding review?Onboarding review is the business-verification step before a live key moves real funds. What it establishes, why it scales to your business, and where it is settled.Can I build while onboarding is pending?Yes — build against a sandbox key first. The sandbox is the same API as production with test data, and your full integration is verified before going live.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.