Independent crypto payment research desk

CoinPayments API planning guide

For developers and product owners planning a crypto checkout integration.

Referral disclosure: marked outbound CTA may use a sponsored referral URL. This does not make the site official.

Map the checkout lifecycle

Document invoice creation, payment detection, confirmations, underpayment behavior, overpayment handling, refunds, expirations, and customer communication before writing code.

Design webhook safety

Validate signatures if provided, use idempotency on order updates, keep a durable event log, and never treat a single client-side redirect as proof of payment.

Operational questions

Ask who owns stuck payments, how exchange-rate windows are shown, which assets are enabled, and what happens when a customer sends the wrong network.

Docs hygiene

Always verify API details through official documentation sources before implementation. This page is educational and may not reflect current provider limits.