Azure DevOps Build Logs API

openapi: 3.1.0
info:
  title: Azure DevOps Artifacts Attachments Build Logs API
  description: 'REST API for managing packages, feeds, and artifact dependencies in Azure Artifacts. Supports NuGet, npm, Maven, Python, and Universal package formats in private or public feeds. Enables programmatic management of package feeds, discovery of packages and their versions, and lifecycle operations such as deprecating or deleting package versions.

    '
  version: '7.1'
  contact:
    name: Microsoft Azure DevOps
    url: https://learn.microsoft.com/en-us/rest/api/azure/devops/artifacts/
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT
servers:
- url: https://feeds.dev.azure.com/{organization}/{project}/_apis
  description: Azure DevOps Artifacts API (project-scoped)
  variables:
    organization:
      description: Azure DevOps organization name or ID
      default: myorganization
    project:
      description: Azure DevOps project name or ID
      default: myproject
security:
- bearerAuth: []
- basicAuth: []
tags:
- name: Build Logs
  description: Operations for accessing build logs and timelines
paths:
  /build/builds/{buildId}/logs:
    get:
      operationId: builds_getLogs
      summary: Azure DevOps Get build logs
      description: 'Returns the list of log entries for a build. Each log entry corresponds to a step or phase in the build pipeline. Use the log ID to retrieve the content of a specific log.

        '
      tags:
      - Build Logs
      parameters:
      - $ref: '#/components/parameters/ApiVersion'
      - name: buildId
        in: path
        required: true
        description: Numeric ID of the build
        schema:
          type: integer
      responses:
        '200':
          description: Build logs returned successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  count:
                    type: integer
                  value:
                    type: array
                    items:
                      $ref: '#/components/schemas/BuildLog'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '404':
          $ref: '#/components/responses/NotFound'
  /build/builds/{buildId}/timeline:
    get:
      operationId: builds_getTimeline
      summary: Azure DevOps Get build timeline
      description: 'Returns the detailed timeline for a build, showing all phases, jobs, tasks, and their individual statuses, start times, and durations. Useful for understanding which steps in the pipeline passed or failed.

        '
      tags:
      - Build Logs
      parameters:
      - $ref: '#/components/parameters/ApiVersion'
      - name: buildId
        in: path
        required: true
        description: Numeric ID of the build
        schema:
          type: integer
      responses:
        '200':
          description: Build timeline returned successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Timeline'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    Forbidden:
      description: Forbidden - insufficient permissions to perform this operation
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    Unauthorized:
      description: Unauthorized - missing or invalid authentication credentials
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    NotFound:
      description: Not found - the requested resource does not exist
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  schemas:
    BuildLog:
      type: object
      description: Metadata about a single build log
      properties:
        id:
          type: integer
          description: Log entry ID
        type:
          type: string
          description: Storage type of the log
        url:
          type: string
          format: uri
          description: URL to retrieve the log content
        createdOn:
          type: string
          format: date-time
        lastChangedOn:
          type: string
          format: date-time
        lineCount:
          type: integer
          description: Number of log lines
    TimelineRecord:
      type: object
      description: A single record in the build timeline
      properties:
        id:
          type: string
          format: uuid
        parentId:
          type: string
          format: uuid
          description: ID of the parent record (e.g., job's parent is a stage)
        type:
          type: string
          description: Record type (Phase, Job, Task, Checkpoint)
        name:
          type: string
          description: Display name of the record
        startTime:
          type: string
          format: date-time
        finishTime:
          type: string
          format: date-time
        state:
          type: string
          enum:
          - pending
          - inProgress
          - completed
        result:
          type: string
          enum:
          - succeeded
          - succeededWithIssues
          - failed
          - canceled
          - skipped
          - abandoned
        resultCode:
          type: string
        changeId:
          type: integer
        lastModified:
          type: string
          format: date-time
        workerName:
          type: string
          description: Name of the agent that executed this record
        order:
          type: integer
          description: Display order within the parent
        errorCount:
          type: integer
          description: Number of errors in this record
        warningCount:
          type: integer
          description: Number of warnings in this record
        url:
          type: string
          format: uri
        log:
          type: object
          description: Log reference for this record
          properties:
            id:
              type: integer
            type:
              type: string
            url:
              type: string
              format: uri
        issues:
          type: array
          description: Issues (errors/warnings) encountered in this record
          items:
            type: object
            properties:
              type:
                type: string
                enum:
                - error
                - warning
              category:
                type: string
              message:
                type: string
              data:
                type: object
                additionalProperties: true
    Timeline:
      type: object
      description: Build timeline showing all records (phases, jobs, tasks)
      properties:
        id:
          type: string
          format: uuid
          description: Timeline ID
        changeId:
          type: integer
          description: Change ID for real-time timeline updates
        lastChangedBy:
          type: string
          format: uuid
        lastChangedOn:
          type: string
          format: date-time
        records:
          type: array
          description: List of timeline records (phases, jobs, tasks)
          items:
            $ref: '#/components/schemas/TimelineRecord'
        url:
          type: string
          format: uri
    ApiError:
      type: object
      description: Error response from the Azure DevOps API
      properties:
        id:
          type: string
          format: uuid
        message:
          type: string
        typeName:
          type: string
        typeKey:
          type: string
        errorCode:
          type: integer
        eventId:
          type: integer
  parameters:
    ApiVersion:
      name: api-version
      in: query
      required: true
      description: Azure DevOps REST API version. Use 7.1 for the latest stable version.
      schema:
        type: string
        default: '7.1'
        enum:
        - '7.1'
        - '7.0'
        - '6.0'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Azure AD OAuth 2.0 bearer token
    basicAuth:
      type: http
      scheme: basic
      description: Basic authentication using a Personal Access Token (PAT). Use any string as the username and the PAT as the password, then base64-encode the result.