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Test keys begin with sg_test_. Usage is counted separately from live keys.

Deterministic fixtures

Fixtures are deterministic only with a test key. A live key evaluates the address using the normal account policy.

Before switching to live

  • Confirm allow and block paths in a staging signup flow.
  • Confirm your timeout and non-2xx fallback behavior.
  • Confirm reason details are not exposed to end users.
  • Confirm API keys are loaded only on the server.
  • Confirm logs capture request_id without recording the raw API key.