Aidbox is undergoing a significant architectural shift by fully adopting the FHIR Schema engine that has been used in production environments by multiple Aidbox customers.
As part of this transition, the existing zen and EA (Entity/Attribute) engines will be deprecated in July 2025. They will be moved to Long-Term Support (LTS) for two years, after which they will reach end-of-life.
The adoption of FHIR Schema brings several benefits to Aidbox, including:
FHIR conformance
Fully supports FHIR StructureDefinitions and FHIR npm packages, ensuring compatibility with the latest standards and tools in the FHIR ecosystem.
Smarter validation
The FHIR Schema engine supports advanced features like FHIRPath invariants, slicing, and extensions, which allow you to apply precise, context-aware rules for more accurate and reliable validation of your resources. Plus, it gives you the flexibility to turn specific validation rules on or off based on your needs — so you stay in control without losing compliance.
Better performance
The FHIR Schema engine is 100 times faster than the official FHIR validator and 17 times faster than the zen validator. It is especially critical in high-load environments.
Ease of use
Aidbox integrates with the official FHIR Implementation Guide (IG) feed, featuring 700+ unique IGs that can be loaded to Aidbox in minutes. Aidbox will resolve and load transitive dependencies.
Dynamic configuration
Aidbox enables dynamic configuration with FHIR packages and canonical resources via UI and API with no restarts.
July 2025:
Health Samurai will publish Aidbox 2507.x image that will be considered an LTS (long-term support) version. This version will receive only critical security fixes for 2 years and will be the last version that supports zen and Entity/Attribute engines.
August 2025 and later
Starting from 2508.x version Aidbox will work using the FHIR schema engine only. Everything defined using zen and Entity/Attribute will not work.
July 2027:
Zen and Entity/Attribute engines will reach end-of-life. LTS support will end and no longer receive updates.
Please follow these steps to ensure smooth migration:
We know this transition needs careful planning. The Aidbox team will provide additional tooling and our Customer Success Team is ready to support you and answer any questions. Feel free to reach out for more guidance.
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