Sandbox — One-time payments
The full Callisto test environment reference: how it differs from production and how to emulate any payment outcome.
- Introduction
- Quick start
- Access & test data
- Sandbox vs production
- Request signing
- Flow: MSISDN
- Flow: bank card
- Flow: SBP
- Flow: refund
- Flow: recurring
- Payment widget
- Request structure
- Create contract
- Authorize contract
- Cancel contract
- Create invoice
- Invoice status
- Cancel invoice
- Refund invoice
- Billing check
- Callbacks
- JSON v3 errors (HTTP)
- ResultCode triggers
- Card errors
- Sandbox knobs (test_info)
- Common pitfalls
- Best practices
- Reference client
- FAQ
- MCP server
- ResultCode
- PaymentResultCode
- InvoiceStatus
- PaymentStatus
- AuthorizationType
- BillingChannel
- Operators