FHIR Developer Skill: Comprehensive Reference for Building REST APIs
Fhir Developer Skill - Claude Code Marketplaces
Summary
The 'FHIR Developer Skill' from anthropics is a comprehensive reference guide for accurately building FHIR R4 REST APIs. It enhances development efficiency by clearly separating required and optional fields, and providing proper mapping of HTTP status codes (e.g., 422, 412).
Details
This 'FHIR Developer Skill' is designed to address specific challenges faced by developers working with FHIR R4 APIs. Its core value lies in its clear distinction between mandatory and optional fields. Furthermore, it provides guidelines for mapping validation errors to appropriate HTTP status codes—such as using '422' for bad enums or '412' for ETag mismatches, rather than defaulting to a generic '400'. Practical code patterns are available in Python and TypeScript, and the skill includes ValueSets for all common enumerations, along with coding system URLs for LOINC/SNOMED/RxNorm. Notably, it highlights common pitfalls, such as advising that `Encounter.class` should use `CodeableConcept` instead of directly using `Coding`, thereby aiming to free developers from constantly cross-referencing the official FHIR specification.
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