openapi: 3.1.0
info:
  title: Apigee API Hub Analytics Attributes API
  description: API for cataloging, organizing, and governing APIs across an organization. Enables API discovery, metadata management, dependency mapping, deployment tracking, and AI-powered specification boost.
  version: 1.0.0
  contact:
    name: Google Cloud Apigee
    url: https://cloud.google.com/apigee/docs/apihub/what-is-api-hub
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  termsOfService: https://cloud.google.com/terms
servers:
- url: https://apihub.googleapis.com/v1
  description: Apigee API Hub Production Server
security:
- oauth2: []
tags:
- name: Attributes
  description: Manage custom attributes
paths:
  /projects/{projectId}/locations/{locationId}/attributes:
    get:
      operationId: listAttributes
      summary: Apigee List Attributes
      description: Lists all custom attributes defined in the specified project and location.
      tags:
      - Attributes
      parameters:
      - $ref: '#/components/parameters/projectId'
      - $ref: '#/components/parameters/locationId'
      - $ref: '#/components/parameters/pageSize'
      - $ref: '#/components/parameters/pageToken'
      - name: filter
        in: query
        description: Filter expression to narrow the results.
        schema:
          type: string
      responses:
        '200':
          description: Successful response with list of attributes
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAttributesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
    post:
      operationId: createAttribute
      summary: Apigee Create an Attribute
      description: Creates a new custom attribute definition in the API Hub.
      tags:
      - Attributes
      parameters:
      - $ref: '#/components/parameters/projectId'
      - $ref: '#/components/parameters/locationId'
      - name: attributeId
        in: query
        description: Required. The ID to use for the attribute resource.
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Attribute'
      responses:
        '200':
          description: Successful response with the created attribute
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Attribute'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
components:
  schemas:
    Attribute:
      type: object
      description: A custom attribute definition.
      properties:
        name:
          type: string
          description: Output only. Resource name of the attribute.
          readOnly: true
        displayName:
          type: string
          description: Required. Display name for the attribute.
        description:
          type: string
          description: Description of the attribute.
        definitionType:
          type: string
          description: Type of the attribute definition.
          enum:
          - DEFINITION_TYPE_UNSPECIFIED
          - SYSTEM_DEFINED
          - USER_DEFINED
        scope:
          type: string
          description: Scope of the attribute.
          enum:
          - SCOPE_UNSPECIFIED
          - API
          - VERSION
          - SPEC
          - API_OPERATION
          - DEPLOYMENT
          - DEPENDENCY
        dataType:
          type: string
          description: Data type of the attribute values.
          enum:
          - DATA_TYPE_UNSPECIFIED
          - ENUM
          - JSON
          - STRING
        allowedValues:
          type: array
          description: Allowed values for ENUM data type.
          items:
            $ref: '#/components/schemas/AllowedValue'
        cardinality:
          type: integer
          format: int32
          description: Maximum number of values for the attribute.
        mandatory:
          type: boolean
          description: Whether the attribute is mandatory.
        createTime:
          type: string
          format: date-time
          description: Output only. Time the attribute was created.
          readOnly: true
        updateTime:
          type: string
          format: date-time
          description: Output only. Time the attribute was last updated.
          readOnly: true
    ListAttributesResponse:
      type: object
      properties:
        attributes:
          type: array
          items:
            $ref: '#/components/schemas/Attribute'
        nextPageToken:
          type: string
        totalSize:
          type: integer
          format: int32
    Error:
      type: object
      description: Error response from the API Hub API.
      properties:
        error:
          type: object
          properties:
            code:
              type: integer
              format: int32
            message:
              type: string
            status:
              type: string
    AllowedValue:
      type: object
      description: An allowed value for an ENUM attribute.
      properties:
        id:
          type: string
          description: ID of the allowed value.
        displayName:
          type: string
          description: Display name of the allowed value.
        description:
          type: string
          description: Description of the allowed value.
        immutable:
          type: boolean
          description: Whether the value is immutable.
  parameters:
    locationId:
      name: locationId
      in: path
      description: Google Cloud region or location.
      required: true
      schema:
        type: string
    pageToken:
      name: pageToken
      in: query
      description: Page token returned from a previous list request.
      schema:
        type: string
    pageSize:
      name: pageSize
      in: query
      description: Maximum number of items to return per page.
      schema:
        type: integer
        format: int32
    projectId:
      name: projectId
      in: path
      description: Google Cloud project ID.
      required: true
      schema:
        type: string
  responses:
    Forbidden:
      description: Forbidden. The caller does not have permission.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Unauthorized. Authentication credentials are missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    BadRequest:
      description: Bad request. The request body or parameters are invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    oauth2:
      type: oauth2
      description: Google OAuth 2.0 authentication
      flows:
        authorizationCode:
          authorizationUrl: https://accounts.google.com/o/oauth2/auth
          tokenUrl: https://oauth2.googleapis.com/token
          scopes:
            https://www.googleapis.com/auth/cloud-platform: Full access to Google Cloud Platform resources
externalDocs:
  description: Apigee API Hub API Reference Documentation
  url: https://cloud.google.com/apigee/docs/reference/apis/apihub/rest