Authentication
NIXPAY uses Bearer API keys. Send your key in the Authorization header:
code
Authorization: Bearer nixp_live_xxxxxxxxxxxxxxxxxxxxxTest and live keys
nixp_test_…— test mode; no real money moves.nixp_live_…— live mode.
Keys are shown once at creation and stored only as an argon2id hash — save yours in a
secret manager. A missing or invalid key returns 401.
Never expose a live key in client-side code or a public repository. Keys are used only from your server.