HAPI FHIR
Open-source Java implementation of the FHIR standard for healthcare interoperability.
Open the official app on hapifhir.io
This tool is hosted by its maintainers. Click below to open hapifhir.io in a new tab — it's their official demo.
Browse health tools →What's next with HAPI FHIR?
Choose how you want to get started.
Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is HAPI FHIR?
HAPI FHIR is an open-source Java library that implements the HL7 FHIR (Fast Healthcare Interoperability Resources) standard, enabling developers to create interoperable healthcare applications. Its primary purpose is to facilitate the exchange of structured healthcare data between systems using modern, RESTful APIs. The tool is widely used by healthcare organizations, developers, and researchers to integrate electronic health records (EHRs), medical devices, and health information systems. It addresses the challenge of fragmented healthcare data by providing a standardized framework for data exchange, reducing the complexity of interoperability in diverse clinical environments. By adhering to the FHIR specification, HAPI FHIR supports global health data sharing, aligning with initiatives like the WHO’s Global Health Observatory and national health information exchanges.
How it works
HAPI FHIR is a Java-based implementation of the FHIR standard, designed to simplify the development of healthcare applications that exchange data via RESTful APIs. It provides tools for parsing, validating, and transmitting FHIR resources, which are structured data formats representing clinical entities like patients, medications, and procedures. The project’s core purpose is to enable interoperability between healthcare systems by abstracting the complexity of the FHIR specification. It allows developers to focus on business logic rather than data format intricacies, accelerating the deployment of health IT solutions. HAPI FHIR supports multiple FHIR versions, including R4B (4.3.0), and includes features like server-side validation, client libraries for RESTful interactions, and tools for generating documentation. It also integrates with the HAPI FHIR Global Atlas, a community-driven map of projects using the tool.
How to use it
- 1Add HAPI FHIR dependencies to your Java project using Maven or Gradle. 2. Initialize a FHIR context to parse or generate resources. 3. Use the library’s client or server modules to send HTTP requests to FHIR endpoints. 4. Validate responses against the FHIR specification using built-in tools. Practical tips include leveraging the HAPI FHIR documentation for version-specific examples and using the Global Atlas to find community-developed modules or plugins.
What it can do
- fhir server
Use cases
Assumptions and limitations
Assumptions
- source: https://hapifhir.io/
- license: Apache-2.0 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Limited built-in support for real-time data streaming or event-driven architectures
- Requires Java development expertise, which may pose barriers for non-technical stakeholders
- The deprecated ActionRequestDetails class may necessitate code updates in legacy implementations
- No native support for non-RESTful communication protocols like HL7v2 or DICOM
- Community-driven development may result in slower adoption of emerging FHIR extensions
Understanding the result
Open-source Java implementation of the FHIR standard for healthcare interoperability.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (Apache-2.0).
- Built with
- (https://hapifhir.io/)
- License
- Apache-2.0
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://hapifhir.io/. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- Apache-2.0
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- Apache-2.0 License
Upstream project
Frequently asked
What is HAPI FHIR and how does it differ from other FHIR implementations?
HAPI FHIR is a Java-specific implementation of the FHIR standard, focusing on providing comprehensive tools for developers to build interoperable healthcare applications. Unlike some alternatives, it emphasizes extensibility through modular design and includes a robust server-side framework. It differs from HL7 FHIR DSTU3 by supporting newer versions like R4B and offering enhanced validation features.
How does HAPI FHIR handle FHIR version compatibility?
HAPI FHIR supports multiple FHIR versions through separate modules, with dedicated libraries for each release (e.g., R4B). Developers can specify the target version when initializing the FHIR context, ensuring compatibility with downstream systems. The project maintains backward compatibility where possible but requires explicit version management for cross-version interoperability.
How do I implement a FHIR server using HAPI FHIR?
Begin by adding the HAPI FHIR server dependency to your Maven/Gradle project. Configure the server with a FHIR context and define resources using the library’s data models. Implement custom logic for data validation or business rules, then deploy the server to handle RESTful requests. Use the HAPI FHIR documentation to map FHIR resources to your application’s data structures.
How does HAPI FHIR compare to other FHIR tools like HL7 FHIR DSTU3?
HAPI FHIR is specifically tailored for Java developers and offers advanced server-side capabilities, while HL7 FHIR DSTU3 refers to an older version of the FHIR specification. HAPI FHIR supports newer standards like R4B and includes tools for both client and server development, whereas DSTU3 is a historical release with limited modern features. Other alternatives include commercial FHIR servers like Mirth Connect or open-source projects like OpenMRS.
How do I resolve errors related to the deprecated ActionRequestDetails class?
Update your code to replace instances of ActionRequestDetails with the recommended alternative, such as using the FhirContext to handle request parameters. Review the HAPI FHIR release notes for migration guides and consult the project’s GitHub repository for specific code examples. Ensure all dependencies are aligned with the version of HAPI FHIR you’re using to avoid compatibility issues.