How it works
A unified API sits between your product and a category of third-party systems, such as accounting software or storefronts. It handles each platform's authentication, endpoints, pagination and error formats, then maps their records to one shared schema. You call one endpoint, for example a list of invoices, and get the same fields whether the source is QuickBooks Online, Xero or NetSuite.
Example
A spend management product needs bills from its customers' ledgers. Without a unified API it builds and maintains three connectors with three data models. With one, it writes a single bill sync and adds new ledgers by configuration.
In integrations
The Unify Int Unified API is a REST surface over the Unify Graph. Objects keep the platform's original record in a raw field, custom fields map per connection, and passthrough requests reach native endpoints the model does not cover. The trade-off to check with any vendor is depth: a unified model must not drop the fields your product relies on. It matters when integration requests outpace your engineers. Each new platform built by hand adds auth, mapping, monitoring and on-call work; with a unified API most of that is shared, and adding a platform becomes a coverage question rather than a project.