Integrations

Payment gateways and third-party/cross-service integration contracts.

Doc	Covers
Payment Workflow	The hub: invoice-first pattern, shared pay page, intent creation/initiation — read this first regardless of which gateway you're integrating.
M-Pesa (Daraja) Reference	Safaricom Daraja API technical reference (STK push, B2C, config tiers).
Paystack Reference	Paystack API technical reference (transactions, transfers, settlements).
Paystack Callback Page	The frontend contract for the public Paystack redirect-callback page.
Notifications REST API	How non-Go services (TruLoad/.NET, ERP/Python) send notifications without NATS.
Finance Integration Map	How each service's events post into treasury's general ledger.