Introduction
Overview of the Flow Unified API — one normalized contract per business vertical, read and write across every supported platform.
The Flow Unified API exposes a normalized contract per business vertical. Each
vertical defines a set of entities — like customer, order, and product — with
a single schema that works across every supported platform. You read records from any
connected system in that shape, and you write records in that shape to any system that
supports writes.
Base URL
https://dev.flow.staging.linktoany.com/api/1.0/standalone-link-engine-serviceVertical contracts
Schemas are organized per vertical — Retail POS, Restaurant, and Accounting — each tuned to its domain.
Read + write
The same unified shape is returned on reads and accepted as the write body. No separate DTOs.
Auth handled
Flow manages each platform's OAuth and token lifecycle. You authenticate once, with Flow.