Authentication

API Authentication

Every request to the Meridian gateway requires a valid API key passed as a Bearer token. Keys are minted on the dashboard after your first top-up and carry a nim_ prefix.

Bearer token

Authorization: Bearer nim_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxx

Pass the key in the Authorization header on every request. Keys never expire but can be revoked from the dashboard.

Key format

  • nim_live_* — production keys with full access
  • nim_test_* — sandbox keys (limited quota, no billing)