openapi: 3.1.0
info:
  title: CircleCI REST API v1 Artifact Pipeline API
  description: The CircleCI REST API v1 is the legacy API that provides access to build information, project details, and user data. While still available, CircleCI recommends migrating to the v2 API for newer features and improved functionality. The v1 API supports operations for retrieving build details, triggering builds, managing SSH keys, and accessing test metadata. Authentication is handled through API tokens passed as query parameters or HTTP headers.
  version: '1.1'
  contact:
    name: CircleCI Support
    url: https://support.circleci.com
  termsOfService: https://circleci.com/terms-of-service/
servers:
- url: https://circleci.com/api/v1.1
  description: CircleCI Production API v1.1
security:
- apiToken: []
tags:
- name: Pipeline
  description: Endpoints for triggering, retrieving, and managing pipelines and their configurations.
paths:
  /pipeline:
    get:
      operationId: listPipelines
      summary: List pipelines
      description: Returns all pipelines for the most recently built projects you follow in the organization.
      tags:
      - Pipeline
      parameters:
      - name: org-slug
        in: query
        description: Organization slug in the form vcs-slug/org-name
        schema:
          type: string
      - name: mine
        in: query
        description: Filter to only pipelines triggered by the current user
        schema:
          type: boolean
      - $ref: '#/components/parameters/PageTokenParam'
      responses:
        '200':
          description: Successfully retrieved pipelines
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PipelineList'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /pipeline/continue:
    post:
      operationId: continuePipeline
      summary: Continue a pipeline
      description: Continues a pipeline from a setup workflow by providing configuration and pipeline parameters.
      tags:
      - Pipeline
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - continuation-key
              - configuration
              properties:
                continuation-key:
                  type: string
                  description: A pipeline continuation key
                configuration:
                  type: string
                  description: A configuration string for the pipeline
                parameters:
                  type: object
                  description: Pipeline parameters as key-value pairs
                  additionalProperties: true
      responses:
        '200':
          description: Pipeline continued successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /pipeline/{pipeline-id}:
    get:
      operationId: getPipeline
      summary: Get a pipeline by ID
      description: Returns a pipeline by its unique identifier.
      tags:
      - Pipeline
      parameters:
      - $ref: '#/components/parameters/PipelineIdParam'
      responses:
        '200':
          description: Successfully retrieved pipeline
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Pipeline'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Pipeline not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /pipeline/{pipeline-id}/config:
    get:
      operationId: getPipelineConfig
      summary: Get a pipeline's configuration
      description: Returns the configuration source for a given pipeline.
      tags:
      - Pipeline
      parameters:
      - $ref: '#/components/parameters/PipelineIdParam'
      responses:
        '200':
          description: Successfully retrieved pipeline configuration
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PipelineConfig'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /pipeline/{pipeline-id}/workflow:
    get:
      operationId: listPipelineWorkflows
      summary: List workflows for a pipeline
      description: Returns a paginated list of workflows associated with a given pipeline.
      tags:
      - Pipeline
      parameters:
      - $ref: '#/components/parameters/PipelineIdParam'
      - $ref: '#/components/parameters/PageTokenParam'
      responses:
        '200':
          description: Successfully retrieved workflows
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WorkflowList'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /project/{project-slug}/pipeline:
    get:
      operationId: listProjectPipelines
      summary: List project pipelines
      description: Returns a paginated list of pipelines for a given project.
      tags:
      - Pipeline
      parameters:
      - $ref: '#/components/parameters/ProjectSlugParam'
      - name: branch
        in: query
        description: Filter pipelines by branch name
        schema:
          type: string
      - $ref: '#/components/parameters/PageTokenParam'
      responses:
        '200':
          description: Successfully retrieved pipelines
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PipelineList'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
    post:
      operationId: triggerPipeline
      summary: Trigger a pipeline
      description: Triggers a new pipeline on the specified project. Optionally specify a branch, tag, or revision to build. Pipeline parameters can also be provided.
      tags:
      - Pipeline
      parameters:
      - $ref: '#/components/parameters/ProjectSlugParam'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TriggerPipelineRequest'
      responses:
        '201':
          description: Pipeline triggered successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PipelineCreation'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /project/{project-slug}/pipeline/mine:
    get:
      operationId: listMyProjectPipelines
      summary: List my project pipelines
      description: Returns a paginated list of pipelines for a project filtered to those triggered by the current user.
      tags:
      - Pipeline
      parameters:
      - $ref: '#/components/parameters/ProjectSlugParam'
      - $ref: '#/components/parameters/PageTokenParam'
      responses:
        '200':
          description: Successfully retrieved pipelines
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PipelineList'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    PipelineList:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Pipeline'
          description: List of pipelines
        next_page_token:
          type: string
          description: Token for retrieving the next page
    MessageResponse:
      type: object
      properties:
        message:
          type: string
          description: A message describing the result of the operation
    PipelineConfig:
      type: object
      properties:
        source:
          type: string
          description: The source configuration
        compiled:
          type: string
          description: The compiled configuration
        setup-config:
          type: string
          description: The setup configuration
        compiled-setup-config:
          type: string
          description: The compiled setup configuration
    PipelineCreation:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: The unique identifier of the new pipeline
        state:
          type: string
          description: The state of the new pipeline
        number:
          type: integer
          description: The pipeline number
        created_at:
          type: string
          format: date-time
          description: When the pipeline was created
    WorkflowList:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Workflow'
          description: List of workflows
        next_page_token:
          type: string
          description: Token for retrieving the next page
    ErrorResponse:
      type: object
      properties:
        message:
          type: string
          description: A human-readable error message
    TriggerPipelineRequest:
      type: object
      properties:
        branch:
          type: string
          description: The branch to build
        tag:
          type: string
          description: The tag to build
        parameters:
          type: object
          additionalProperties: true
          description: Pipeline parameters as key-value pairs
    Pipeline:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: The unique identifier of the pipeline
        errors:
          type: array
          items:
            type: object
            properties:
              type:
                type: string
                description: The type of error
              message:
                type: string
                description: The error message
          description: Errors that occurred during pipeline setup
        project_slug:
          type: string
          description: The project slug
        updated_at:
          type: string
          format: date-time
          description: When the pipeline was last updated
        number:
          type: integer
          description: The pipeline number
        state:
          type: string
          enum:
          - created
          - errored
          - setup-pending
          - setup
          - pending
          description: The current state of the pipeline
        created_at:
          type: string
          format: date-time
          description: When the pipeline was created
        trigger:
          type: object
          properties:
            type:
              type: string
              description: The type of trigger
            received_at:
              type: string
              format: date-time
              description: When the trigger was received
            actor:
              type: object
              properties:
                login:
                  type: string
                  description: The login of the actor
                avatar_url:
                  type: string
                  format: uri
                  description: The avatar URL of the actor
          description: The trigger that started this pipeline
        vcs:
          type: object
          properties:
            provider_name:
              type: string
              description: The VCS provider name
            origin_repository_url:
              type: string
              format: uri
              description: The origin repository URL
            target_repository_url:
              type: string
              format: uri
              description: The target repository URL
            revision:
              type: string
              description: The VCS revision
            branch:
              type: string
              description: The VCS branch
            tag:
              type: string
              description: The VCS tag
          description: VCS information for this pipeline
    Workflow:
      type: object
      properties:
        pipeline_id:
          type: string
          format: uuid
          description: The ID of the pipeline this workflow belongs to
        id:
          type: string
          format: uuid
          description: The unique identifier of the workflow
        name:
          type: string
          description: The name of the workflow
        project_slug:
          type: string
          description: The project slug
        status:
          type: string
          enum:
          - success
          - running
          - not_run
          - failed
          - error
          - failing
          - on_hold
          - canceled
          - unauthorized
          description: The current status of the workflow
        started_by:
          type: string
          format: uuid
          description: The ID of the user who started the workflow
        pipeline_number:
          type: integer
          description: The pipeline number
        created_at:
          type: string
          format: date-time
          description: When the workflow was created
        stopped_at:
          type: string
          format: date-time
          description: When the workflow stopped
  parameters:
    ProjectSlugParam:
      name: project-slug
      in: path
      required: true
      description: The project slug in the form vcs-slug/org-name/repo-name (e.g., gh/CircleCI-Public/api-preview-docs)
      schema:
        type: string
    PipelineIdParam:
      name: pipeline-id
      in: path
      required: true
      description: The unique identifier of the pipeline
      schema:
        type: string
        format: uuid
    PageTokenParam:
      name: page-token
      in: query
      description: Token for retrieving the next page of results
      schema:
        type: string
  securitySchemes:
    apiToken:
      type: apiKey
      in: header
      name: Circle-Token
      description: Personal API token for authenticating with the CircleCI API. Can also be passed as a query parameter.
externalDocs:
  description: CircleCI API v1 Reference
  url: https://circleci.com/docs/api/v1/