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API Integration: Payments, SMS, Webhooks & WebRTC

12 min readFah Swe Team366 views65 likes6 comments
API Integration: Payments, SMS, Webhooks & WebRTC

API integration fails in the edge cases: retries, idempotency keys, signature verification, and partial refunds. Fah Swe designs payment and webhook flows to be safe under duplicate delivery.

Bangladesh stacks often need bKash/Nagad plus international Stripe/PayPal. Abstract providers behind one ledger.

SMS and WhatsApp OTPs must be rate-limited and logged. Never SMS secrets that grant permanent access.

WebRTC and third-party CRMs follow the same rule: secrets on server, short-lived client tokens, observability on failure rates.

Bring Fah Swe your Postman collection or vendor docs — we deliver production-grade adapters with tests.

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