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All requests to the Stablecoin Payments API require an API key.

Create an API Key

Generate an API key by calling the Create API Key endpoint.
Important: Store your API key securely. It is shown only when it is created.

Send the API Key

Include your API key in the X-API-Key header for every authenticated request.

Authentication Errors

If the API key is missing or invalid, the API returns:
Response:

Security Best Practices

  • Never expose your API key in client-side applications.
  • Store API keys in environment variables or a secure secret manager.
  • Do not commit API keys to GitHub.
  • Rotate API keys immediately if you suspect they have been compromised.