Public surface / Reference and test servers

ONC Inferno reference server (US Core / SMART)

This endpoint declares a complete, interoperable public surface.

Current grade A

Reachability100

Capability transparency80

Interop readiness100

Observed surface

Base URL: https://inferno.healthit.gov/reference-server/r4
Category: Reference and test servers
Availability: answered 14 of the last 14 daily checks (100%)
Vantage agreement: reachable from all 3 vantages, which are 3 hosts on one network (github-actions): one network's view sampled 3 times, not 3 independent networks

Interpretation

A grade describes two public discovery documents at one point in time. It does not inspect patient data, authenticated behavior, or clinical quality.

Read the scoring method →

Findings

Reachability100

Pass: /metadata answers with HTTP 2xx over HTTPS: reachable from all 3 vantages, which are 3 hosts on one network (github-actions): one network's view sampled 3 times, not 3 independent networksR1 Spec ↗
Pass: /metadata responded in 404 ms (median across 3 reachable vantages on one network)R2 Spec ↗

Capability transparency80

Pass: fhirVersion declared: '4.0.1' (expected 4.x)T1 Spec ↗
Needs attention: software name/version missingT2 Spec ↗
Pass: 26 resource types declaredT3 Spec ↗
Pass: 25/26 declared resources document their interactionsT4 Spec ↗

Interop readiness100

Pass: US Core / CARIN / Da Vinci profiles declared in CapabilityStatement.instantiates, rest.resource.supportedProfileI1 Spec ↗
Pass: SMART discovery document present and completeI2 Spec ↗
Pass: OAuth/SMART security service declared in CapabilityStatementI3 Spec ↗

Observed since 2026-08-05; no changes to declared capability recorded.

Registry provenance

How this entry was verified

live CapabilityStatement fetch; publisher confirmed via implementation description naming Inferno Reference Server on healthit.gov (recorded 2026-08-04). Re-checked 2026-08-19: live CapabilityStatement re-fetch from the davis-ca residential vantage; fhirVersion 4.0.1, 26 resource types, publisher 'MITRE', software 'no software name'.

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This is an observational snapshot of a public, unauthenticated surface. It is not an audit, a ranking of care quality, or a statement about anyone's regulatory compliance. See how we grade.