POS Integration Guide
Developer reference for integrating a POS with the XPOS ESDC local service (port 8888): endpoints, request/response schemas, errors and the legacy V2 API.
Overview & Integration Flow
XPOS ESDC exposes a local HTTP service that a Point of Sale (the built-in POS, or your own POS/ER...
Status & Session
These endpoints establish that the SDC is ready and unlock signing for the session. GET /api/v3/...
Signing an Invoice
The core endpoint. Signs a sale on the Secure Element and returns the fiscal result (verification...
Errors, Response Codes & Validation
The SDC uses two error shapes: field validation errors (HTTP 400) and operational response codes ...
History & Reports
Read-back endpoints for reprinting, reconciliation and reporting. These query stored records and ...
Legacy V2 API
The Legacy V2 API exists for compatibility with older POS integrations (the FiscoBridge-era contr...