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Prometheus Metadata API

Endpoints for querying label names, label values, series metadata, and metric metadata without executing PromQL expressions.

Prometheus Metadata API is one of 14 APIs that Prometheus publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

This API exposes 1 JSON Schema definition.

Tagged areas include Metadata. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a GitHub repository, a changelog, an AsyncAPI specification, and 1 JSON Schema.

This API exposes 4 operations across 4 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version v0.28.0.

Requests are made against a single base URL, http://{host}:{port}.

4 operations 4 paths 3 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
v0.28.0
Server
http://{host}:{port}
License
Resource Areas
1

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

Metadata 4

Endpoints for querying label names, label values, series metadata, and metric metadata without executing PromQL expressions.

GET
/api/v1/labels
Prometheus Get label names
getLabelNames 4 params → 200400
GET
/api/v1/label/{label_name}/values
Prometheus Get label values
getLabelValues 5 params → 200400404
GET
/api/v1/series
Prometheus Query series
querySeries 4 params → 200400
GET
/api/v1/metadata
Prometheus Get metric metadata
getMetricMetadata 3 params → 200400

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are StringListResponse (3 properties), SeriesResponse (2 properties), MetricMetadataResponse (2 properties). Each schema is shown below with its type and property counts.

MetricMetadataResponse
object
Response containing metadata for metrics.
2 properties 2 required
SeriesResponse
object
Response containing a list of series label sets.
2 properties 2 required
StringListResponse
object
Response containing a list of string values.
3 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

prometheus-metadata-api-openapi.yml Raw ↑

Other APIs Prometheus publishes across the network.

Prometheus Remote Write API
Prometheus Client Libraries
Prometheus Admin API
Prometheus Alerts API
Prometheus Lifecycle API
Prometheus Metrics API
Prometheus Query API
Prometheus Receivers API
Prometheus Rules API
Prometheus Silences API
Prometheus Status API
Prometheus Targets API
Where this information came from

This is an independent, third-party profile of Prometheus Metadata API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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