# SXCHNGE backend

Reserved for a small backend for frontend (BFF) using a supported Sendico API. No service, runtime, or dependencies have been initialized yet.

Planned responsibilities:

- Consumer authentication and sessions, with a stable mapping to organization-scoped Sendico customer references.
- Consumer-authorized access to onboarding, quotes, orders, and transaction history.
- Product-specific orchestration and presentation of Sendico KYC, eligibility, and remaining-limit responses.
- Server-side integration credentials and request correlation with Sendico.

Sendico owns payment execution, authoritative KYC evidence and verification records, policy evaluation, and limit reservations/enforcement. Do not copy its existing BFF or import local Sendico implementation modules.

Before implementation, agree on customer registration and identity mapping, customer KYC operations, eligibility/limits reads, customer-scoped payment access, and retry/idempotency behavior. Validate consumer isolation even when multiple customers use the same sxchnge organization and integration principal.