Advanced guides

One task per page. Payment methods have their own guides; errors and method states are under Error handling.

Session and state

• Sessions: follow the session state, refresh an expired or changed session, survive process death, confirm whether the money moved, tear down.

Payment pipeline

• Hooks: run your code before /validate, after it, or take a redirect over.
• Monitoring: what the element reports to your screen, and what the SDK reports to Purse, and what never leaves the device.

Methods

• Instalment simulation: show a BNPL schedule before the shopper chooses the method.

UI

• Customization: the theme of the card form; method icons.