openapi: 3.1.0
info:
  title: Thanos Compact Alerts Metadata API
  description: The Thanos Compact HTTP API provides operational endpoints for the Compactor component, which runs as a singleton process applying Prometheus compaction procedures to TSDB blocks stored in object storage. It performs downsampling at 5-minute and 1-hour resolutions and enforces retention policies to reduce long-term storage costs.
  version: 0.35.0
  contact:
    name: Thanos Community
    url: https://thanos.io/
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:10902
  description: Default Thanos Compact HTTP endpoint
tags:
- name: Metadata
paths:
  /api/v1/series:
    get:
      operationId: getSeries
      summary: Find Series by Label Matchers
      description: Returns the list of time series that match a certain label set. Queries across all connected stores.
      tags:
      - Metadata
      parameters:
      - name: match[]
        in: query
        required: true
        description: Series selector argument that selects the series to return. At least one match[] argument must be provided.
        schema:
          type: array
          items:
            type: string
        style: form
        explode: true
      - name: start
        in: query
        required: false
        description: Start timestamp
        schema:
          type: string
      - name: end
        in: query
        required: false
        description: End timestamp
        schema:
          type: string
      - $ref: '#/components/parameters/dedup'
      - $ref: '#/components/parameters/partial_response'
      responses:
        '200':
          description: Successful series lookup
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SeriesResponse'
        '400':
          description: Invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /api/v1/labels:
    get:
      operationId: getLabels
      summary: Get Label Names
      description: Returns a list of label names available across all stores.
      tags:
      - Metadata
      parameters:
      - name: start
        in: query
        required: false
        description: Start timestamp
        schema:
          type: string
      - name: end
        in: query
        required: false
        description: End timestamp
        schema:
          type: string
      - name: match[]
        in: query
        required: false
        description: Series selector to filter labels
        schema:
          type: array
          items:
            type: string
        style: form
        explode: true
      - $ref: '#/components/parameters/partial_response'
      responses:
        '200':
          description: Successful label names response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LabelsResponse'
        '400':
          description: Invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /api/v1/label/{label_name}/values:
    get:
      operationId: getLabelValues
      summary: Get Label Values
      description: Returns a list of label values for a given label name across all connected stores.
      tags:
      - Metadata
      parameters:
      - name: label_name
        in: path
        required: true
        description: The label name to retrieve values for
        schema:
          type: string
      - name: start
        in: query
        required: false
        description: Start timestamp
        schema:
          type: string
      - name: end
        in: query
        required: false
        description: End timestamp
        schema:
          type: string
      - name: match[]
        in: query
        required: false
        description: Series selector to filter label values
        schema:
          type: array
          items:
            type: string
        style: form
        explode: true
      - $ref: '#/components/parameters/partial_response'
      responses:
        '200':
          description: Successful label values response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LabelValuesResponse'
        '400':
          description: Invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    SeriesResponse:
      type: object
      required:
      - status
      - data
      properties:
        status:
          type: string
          enum:
          - success
        data:
          type: array
          items:
            type: object
            additionalProperties:
              type: string
          description: Array of label sets
        warnings:
          type: array
          items:
            type: string
    ErrorResponse:
      type: object
      required:
      - status
      - errorType
      - error
      properties:
        status:
          type: string
          enum:
          - error
        errorType:
          type: string
          description: Category of error
        error:
          type: string
          description: Human-readable error message
        warnings:
          type: array
          items:
            type: string
    LabelsResponse:
      type: object
      required:
      - status
      - data
      properties:
        status:
          type: string
          enum:
          - success
        data:
          type: array
          items:
            type: string
          description: List of label names
        warnings:
          type: array
          items:
            type: string
    LabelValuesResponse:
      type: object
      required:
      - status
      - data
      properties:
        status:
          type: string
          enum:
          - success
        data:
          type: array
          items:
            type: string
          description: List of label values
        warnings:
          type: array
          items:
            type: string
  parameters:
    dedup:
      name: dedup
      in: query
      required: false
      description: If true, enables deduplication of time series from replicated Prometheus instances. Defaults to true.
      schema:
        type: boolean
        default: true
    partial_response:
      name: partial_response
      in: query
      required: false
      description: If true, enables partial response. If a store is unavailable, partial data will be returned with a warning instead of failing the query.
      schema:
        type: boolean
        default: false
externalDocs:
  description: Thanos Compact Documentation
  url: https://thanos.io/tip/components/compact.md/