FazerCards Glossary
X-Api-Key header
The HTTP header FazerCards uses to receive the API key on every request. Example: `X-Api-Key: live_xxx...`
X-Api-Key is the conventional HTTP header for static API-key authentication. FazerCards reads it on every /api/v2 call; the value is the secret API key from the reseller dashboard. Use HTTPS only — sending the header over plain HTTP would expose the key on the wire.
Key facts
- Always send over HTTPS.
- One header per call — server validates before any other processing.
- Pair with Idempotency-Key on POSTs.