SparkGlim Developer
Payment callbacks. Clear ownership.
Provider callbacks belong to SparkGlim payment infrastructure. They are not a generic customer subscription service.
Payment ownership
SparkGlim verifies configured provider messages and maintains authoritative transaction and fulfillment records.
Know the documented limits
No general outbound webhook subscription endpoint is implemented in the documented contract. Discuss delivery requirements before promising external events.
Continue through checkout
A checkout return URL brings the visitor back to the relevant page. Your browser must not infer paid votes, issued tickets or donations from that navigation.
Keep the integration dependable
Design the normal browser journey as a handoff to the returned checkout URL and a return to the relevant page. Do not implement payment verification or polling in the public frontend.