FHIR Tester

The FHIR Tester is a developer-oriented API testing tool designed to validate FHIR REST endpoints, resources, and transactions across commonly deployed R4 and R5 implementations. It enables repeatable, programmatic test scenarios, provides structured validation results, and surfaces conformance gaps quickly. By focusing on API-level correctness rather than UI workflows, it supports iterative development, automated QA, and rapid onboarding of new health data exchanges.

Conceptually, it constructs HTTP requests against a configured FHIR server, then validates responses against the corresponding FHIR resource schemas, operations, and constraints. It checks resource integrity, required fields, value types, and search parameter semantics. It also validates bundle and transaction semantics when performing multi-resource operations and reports deviations with precise location and guidance for remediation.

Who benefits? Backend developers, QA engineers, integration partners, and health IT vendors seeking fast feedback on interoperability, conformance, and data integrity. The tool's API-first design yields clear, machine-parseable results suitable for CI pipelines, test suites, and documentation. Unique differentiators include explicit conformance validation against FHIR profiles, deterministic response schemas, and straightforward export for automated testing.

Core features include REST operation testing (GET/POST/PUT/PATCH/DELETE), resource level validations against R4/R5 schemas, search parameter verification, bundle and transaction support, and structured result reporting with status codes, payload, and validation messages. Typical use cases cover onboarding new FHIR servers, verifying profile conformance, auditing data exchanges, and integrating health data tests into developer workflows.