generated: '2026-07-20'
method: searched
source: https://docs.montonio.com/api/shipping-v2/guides/sandbox + Stargate embedded-cards/BLIK guides
environments:
  production:
    stargate: https://stargate.montonio.com/api
    shipping: https://shipping.montonio.com/api/v2
  sandbox:
    stargate: https://sandbox-stargate.montonio.com/api
    shipping: https://sandbox-shipping.montonio.com/api/v2
keys: >-
  Sandbox and Production API keys are issued separately from the Partner System
  (Stores -> API Keys). Sandbox keys are available immediately after signup;
  production keys unlock after business approval.
sandbox_behavior:
- Shipping sandbox does not call real carrier APIs; responses are mocked and labels are dummy.
- Carrier activation in sandbox accepts any dummy credentials.
- POST /shipments does not validate phone numbers or address data in sandbox.
- Tracking Page renders but shows no real-time tracking (nothing is actually shipped).
- Test mode must be activated in the Partner System before using the sandbox.
test_cards:
- number: "5577 0000 5577 0004"
  expiry: "03/30"
  cvc: "737"
  result: Successful payment
- number: "5454 5454 5454 5454"
  expiry: "03/30"
  cvc: "737"
  result: Successful payment with 3DS
test_hooks:
- description: Trigger redirect 3DS flow
  how: Set billingAddress.email to redirect-3ds-test@montonio.com when creating the Order, then use the 3DS test card.
- description: Simulate a failed card payment
  how: Use a test card with an invalid CVC, or the 3DS card with a correct CVC and fail the 3DS authentication.
test_blik_codes:
- code: "777 123"
  result: Successful payment
- code: "555 555"
  result: Incorrect BLIK code