Bound vs Unbound Custom APIs: How to Decide

Choosing between a bound and unbound Custom API in Dataverse depends on the scope and context of the business logic you need to implement. A bound Custom API is linked directly to a specific table or record, making it ideal when your logic operates on a single entity—such as approving an Opportunity, recalculating a Quote Line, or validating a Case—while also benefiting from inheriting the table’s security model and enabling easy form or ribbon integration. In contrast, an unbound Custom API runs at the organizational level and is not tied to any single table, making it the better choice for cross-entity operations, batch processing, orchestration logic, or reusable services such as compliance checks or data synchronization. In general, use a bound API when your logic is entity-specific and user-triggered, and choose an unbound API when your logic is global, shared, or not dependent on record context.