Is Fabric backend or API source code included?

No. Fabric’s backend and API implementation are not included in source form.

Protected backend code includes the FastAPI implementation, internal services, workers, transaction logic, authorization logic, deployment internals, and private build systems.

Customers integrate with Fabric through the supplied frontend, documented REST APIs, webhooks, and supported integrations. If backend changes are required, custom backend development can be performed by Thrinacia under a separate scoped engagement.