If you want to accept crypto from your own backend, you want a crypto payment API that is small, predictable, and does not take custody of your money. This is a 10-minute quickstart for the Shieldz API: create an invoice, send your customer to the hosted checkout, and verify the webhook that tells you it was paid. JSON in, JSON out, $0 platform fees.
The full reference lives in the docs; this is the shortest path to a working integration.
1. Get a key
Create a secret key in your dashboard under Developers. Keys are sk_live_… (real funds) or sk_test_… (test mode). The key is shown once, so store it safely.
Authorization: Bearer sk_live_xxxxxxxxxxxxxxxxxxxx
