Module manifest 

Available on crate features metrics or otel-metrics only.

Machine-readable metric metadata for the /metrics/manifest endpoint: MetricDescriptor, MetricRegistry, ManifestResponse.

Field semantics align with OpenMetrics (type, description, unit) and OTel Advisory Parameters (labels, buckets). group, use_cases, dashboard_hint are HyperI extensions.

Standards Alignment

Field	Standard
type	OpenMetrics TYPE
description	OpenMetrics HELP
unit	OpenMetrics UNIT
labels	OTel Advisory Attributes
buckets	OTel Advisory ExplicitBucketBoundaries
group, use_cases, dashboard_hint	HyperI extensions

Structs

ManifestResponse

JSON response for GET /metrics/manifest.

MetricDescriptor

Describes a single registered metric for the manifest.

MetricRegistry

Cloneable handle to the metric registry.

Enums

MetricType

Metric type discriminator (aligns with OpenMetrics TYPE).