API test mode
Create a key: it always starts in test mode. The mode shown in the portal controls behaviour, not just the key text.
Create a key: it always starts in test mode. The mode shown in the portal controls behaviour, not just the key text.

Highlighted area in the current portal, using fictional example data. Send a test request from /en/developers and read the letter back. Tests are never printed, posted or charged.
Choose Go live only after checking address, preview and error handling. Real post requires confirmed email, verified company and a check of price and credit.