Sandbox — Subscriptions

The entire Subscription Service test environment: credentials, subscription flows, charge-cycle sandbox knobs, rejections and callbacks.

• Introduction
• Quick start
• Access & test data
• Sandbox vs production
• Request signature
• Methods
• Subscription flow
• Card & SBP subscription
• WAP activation
• Payment widget
• Sandbox hooks: charges
• Failures & limits
• Callbacks
• Common mistakes
• Best practices
• Reference client
• FAQ
• MCP server