FEvIR API Enhancements: Adding POST and Search Functionality for FHIR Resources
FEvIR Project - FEvIR API - FEvIR Platform
Summary
The Fast Evidence Interoperability Resources (FEvIR) Platform has implemented advanced features through continuous API updates, enabling the handling of multiple FHIR resources. This improves the flexibility of medical information exchange by allowing single concept retrieval and integration with complex research data (such as ClinicalTrials.gov).
Details
The FEvIR API demonstrates a history of continuous functional expansion. Initially, GET requests based on a single FEvIR Object Identifier (FOI) were primary; however, subsequent releases added support for retrieving multiple resources via POST methods and search functionality using query parameters. Notably, the platform introduced support for submitting FHIR resources via POST requests (Release 0.7.0), allowing bulk retrieval using multiple FOIs or a project FOI. Furthermore, recent updates enhanced the search API to return not only search results but also related FHIR resources (like ResearchStudy) as an array in JSON format. The introduction of the FEvIR Linking Identifier (FLI) option further enhances data accessibility using diverse identifiers. These advancements represent significant technical progress in improving evidence interoperability and supporting the handling of clinical research and Real-World Data (RWD). The API is built upon FHIR resource definitions, ensuring compatibility with the HL7 FHIR standard. This guarantees interoperability for international medical information exchange. Developers must understand various data retrieval methods—including GET/POST—and search patterns using specific identifiers (FOI, NCTId) to keep pace with the API's evolution.
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