Huli FHIR Core Implementation Guide (R4)
0.1.0 - Release

Huli FHIR Core Implementation Guide (R4) - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

OperationDefinition: Subscription $stats

Official URL: https://fhir.huli.ai/r4/OperationDefinition/Subscription-stats Version: 0.1.0
Active as of 2026-09-11 Computable Name: SubscriptionStats

Aggregate delivery metrics for a subscription. Read-only; requires system/Subscription.rs.

URL: [base]/Subscription/[id]/$stats

Parameters

UseNameScopeCardinalityTypeBindingDocumentation
OUTdelivered1..1integer

Deliveries in a terminal delivered state.

OUTfailed1..1integer

Deliveries currently in a retryable failed state.

OUTpending1..1integer

Deliveries awaiting a first attempt.

OUTdead1..1integer

Deliveries dead-lettered after exhausting retries.

OUTdeadLetterDepth1..1integer

Current dead-letter queue depth.

OUTtotalAttempts1..1integer

Total delivery attempts across all events.

OUTsuccessRate1..1decimal

delivered / (delivered + dead), 0..1.

OUTlatencyP50Seconds0..1decimal

Median enqueue-to-delivered latency, seconds.

OUTlatencyP95Seconds0..1decimal

95th-percentile enqueue-to-delivered latency, seconds.