Crypto payments

Trustee Pay API

Welcome to the Trustee Pay API — a GraphQL-based interface for integrating seamless, secure cryptocurrency payments and login authentication into your service.

Get Paid Your Way, Anywhere

Give your customers the freedom to pay with crypto, cards, or digital wallets — wherever they are.

Accept cryptocurrency anywhereSell products or services for crypto online, offline, or even via email — with no intermediaries or limitations.
Expand your global customer reachOpen your business to a worldwide audience already using crypto — no banking barriers or currency restrictions.
Instant settlementsFunds are delivered directly to your wallet.

How to accept crypto payments on website

This documentation provides examples and best practices for:

User login flows using secure QR or deeplink approvalRead more
Creating and managing crypto invoicesRead more
Checking payment status and handling callbacksRead more

Prefer hands-on testing?

Try the live demo Download and run locally

How to accept crypto payments on website

You can choose between server-side or client-side integration depending on your security model. Server-side integration provides stronger control and user identity isolation, while client-side is easier to implement but exposes the public API key.

🚀 All API operations are performed via GraphQL at:

https://payapi1.trusteeglobal.com/graphql

apiMerchantWebKey is the demo public API key provided by Trustee for testing and integration purposes in almost-production environments.

You can use this key to:

Test login flows via QR code or mobile deeplink
Try invoice creation and payment requests
Explore and debug API responses

Important:apiMerchantWebKey is shared among all developers, so:

Do not use it in production.
Expect that responses (e.g., login requests) may be visible to other developers.
Use uniqueKeyForRequest/uniqueKeyForResponse to distinguish your test data.

All payments are real and will be credited to the Trustee developers' “beer pool” 🍺. So if you're feeling generous during testing — our dev team thanks you in advance! 😄 For real use cases, request your own production key from the Trustee team.

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