Blaze FHIR R4 Conformance

Blaze version 1.6.2 · Overall: 91% (21/23 tests passed) on round 2026-q2-r000. Source: https://github.com/samply/blaze.

About Blaze

Blaze is Samply's Clojure FHIR R4 server optimized for research — especially federated query and CQL-based cohort execution across clinical data repositories. Open source, German clinical-research heritage.

Scores by profile

• Bulk Data kickoff surface: N/A — Patient/$export operation not implemented (probe GET /Patient/$export → 400)
• FHIR R4 base spec: 91% (21/23) — MUST 6/7 · SHOULD 9/9 · MAY 6/7

Each cell links to the profile-level scoreboard comparing Blaze against every other tested server.

Methodology

Tests are authored as FHIR R4 TestScript Resources and run by an open-source executor against a fresh Docker deployment of each server. We deliberately don't compute a composite number — read the methodology for the reasoning.

Compare to other FHIR servers

HAPI · MS FHIR · Medplum · Aidbox · Spark

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