Connect your Certfill API key

Create a test key in Certfill: Organization settings → Developers → API keys → Create key (Test). Test keys are never charged and never email anyone. Live keys (cf_live_) are refused on this server. Your key is kept on the server (encrypted at rest), is never sent back to your browser, and is forgotten 12 hours after your last visit or when you disconnect. Your data is visible only to this key.