Firsty BuildersHelpWhat is the difference between sandbox and production?
Integration

What is the difference between sandbox and production?

Sandbox uses test carriers and test ICCIDs. Production hits real Tier-1 networks. API surface is identical; only the base URL and credentials change.

The short answer

The API surface is identical. Only the base URL, credentials, and carriers differ.

SandboxProduction
Base URL
connect.test.firsty.app
connect.firsty.app
CarriersTest SIM profilesReal Tier-1 carriers
ICCIDsTest rangeReal GSMA-assigned
Billing50 EUR free creditReal money
QR codesScannable, no dataActivate on real devices

What works the same

Try it yourself

Free sandbox. Real Tier-1 carriers. 60 seconds from signup to credentials.

Get started →
  • Endpoints, request/response shapes, status codes, rate limits
  • OAuth2 flow and token lifetime
  • Webhook payloads and signature verification
  • Idempotency-Key behavior

What to watch

Test ICCIDs returned by sandbox will not activate on a real device. They are real-looking 19-20 digit strings, but they map to a test profile. Do not pass them to a customer.

Switch to production by swapping the base URL and credentials. No code changes beyond that.

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