The API key structure for Numeral’s services follows a specific pattern that ensures both security and clarity. Keep production keys secure - a bad actor with your API key can learn sensitive information about your business. You can create API keys in either a test or production mode. Keys will lead with sk_test_... or sk_prod... test keys: This environment is used for development and testing purposes. Transactions recorded with test keys will not incur any charges or tax remittance. production: Production keys handle live traffic. Numeral will file production transactions with the states as appropriate. Create and manage developer keys in your Numeral developer dashboard under the API Keys tab.