openapi: 3.1.0
info:
  title: CRI-O Metrics Containers Information API
  description: The CRI-O metrics endpoint exposes Prometheus-compatible metrics for operations, image pulls, container lifecycle, and runtime errors. Metrics are enabled with the --enable-metrics daemon flag and served on the port configured by --metrics-port (default 9090) at the /metrics path. The endpoint can also be served over a Unix socket via --metrics-socket and secured using --metrics-cert and --metrics-key for TLS.
  version: '1.0'
  contact:
    name: CRI-O Project
    url: https://cri-o.io/
  license:
    name: Apache 2.0
    url: https://github.com/cri-o/cri-o/blob/main/LICENSE
servers:
- url: http://localhost:9090
  description: Default CRI-O metrics endpoint
tags:
- name: Information
  description: Runtime version, configuration, and general info endpoints.
paths:
  /info:
    get:
      tags:
      - Information
      operationId: getInfo
      summary: Get runtime information
      description: Returns daemon information including storage driver, storage root, cgroup driver, and runtime defaults.
      responses:
        '200':
          description: Runtime information
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Info'
  /config:
    get:
      tags:
      - Information
      operationId: getConfig
      summary: Get runtime configuration
      description: Returns the active CRI-O TOML configuration as plain text.
      responses:
        '200':
          description: TOML configuration document
          content:
            text/plain:
              schema:
                type: string
components:
  schemas:
    Info:
      type: object
      properties:
        storage_driver:
          type: string
        storage_root:
          type: string
        cgroup_driver:
          type: string
        default_runtime:
          type: string
        runtimes:
          type: object
          additionalProperties: true
externalDocs:
  description: CRI-O Metrics Documentation
  url: https://github.com/cri-o/cri-o/blob/main/docs/metrics.md