openapi: 3.1.0
info:
  title: Zipkin API v2 Autocomplete Dependencies API
  description: Zipkin's v2 HTTP API for querying and collecting distributed traces. Provides endpoints for submitting spans, querying traces, looking up services and span names, and retrieving dependency links between services.
  version: 2.0.0
  contact:
    name: OpenZipkin
    url: https://zipkin.io
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:9411
  description: Default Zipkin server
tags:
- name: Dependencies
  description: Query service dependency links
paths:
  /api/v2/dependencies:
    get:
      operationId: getDependencies
      summary: Zipkin Get Dependency Links
      description: Returns dependency links derived from spans. Dependencies show which services call which other services, along with call counts and error counts.
      tags:
      - Dependencies
      parameters:
      - name: endTs
        in: query
        required: true
        description: Upper bound timestamp for dependency links, in epoch milliseconds.
        schema:
          type: integer
          format: int64
      - name: lookback
        in: query
        description: How far back from endTs to look, in milliseconds.
        schema:
          type: integer
          format: int64
      responses:
        '200':
          description: A list of dependency links
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/DependencyLink'
components:
  schemas:
    DependencyLink:
      type: object
      required:
      - parent
      - child
      - callCount
      properties:
        parent:
          type: string
          description: Parent service name
        child:
          type: string
          description: Child service name
        callCount:
          type: integer
          description: Total traced calls from parent to child
        errorCount:
          type: integer
          description: Total traced calls that errored