How to Integrate a Payment Provider That Has No Sandbox
No sandbox and docs that don't match production? Simulate from the docs, send one tiny real payment, log every call, and fix the gaps before customers see them.
#api · 3 posts
How Do We Know a Customer Has Actually Received Their Money?
Webhooks vs. polling: how a payment system actually confirms money has arrived, explained through a grocery-store QR code.
Notes on Evaluating a New Payment API Before You Build the Adapter
Test the field mapping before frontend builds on top of it — a checklist for what to verify before writing adapter docs.