openapi: 3.1.0
info:
  title: Apigee API Hub Analytics External APIs 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: External APIs
  description: Manage external API references
paths:
  /projects/{projectId}/locations/{locationId}/externalApis:
    get:
      operationId: listExternalApis
      summary: Apigee List External APIs
      description: Lists all external API references in the specified project and location.
      tags:
      - External APIs
      parameters:
      - $ref: '#/components/parameters/projectId'
      - $ref: '#/components/parameters/locationId'
      - $ref: '#/components/parameters/pageSize'
      - $ref: '#/components/parameters/pageToken'
      responses:
        '200':
          description: Successful response with list of external APIs
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListExternalApisResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
    post:
      operationId: createExternalApi
      summary: Apigee Create an External API
      description: Creates a new external API reference in the API Hub.
      tags:
      - External APIs
      parameters:
      - $ref: '#/components/parameters/projectId'
      - $ref: '#/components/parameters/locationId'
      - name: externalApiId
        in: query
        description: Required. The ID to use for the external API resource.
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExternalApi'
      responses:
        '200':
          description: Successful response with the created external API
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExternalApi'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
components:
  schemas:
    ExternalApi:
      type: object
      description: An external API reference.
      properties:
        name:
          type: string
          description: Output only. Resource name of the external API.
          readOnly: true
        displayName:
          type: string
          description: Required. Display name for the external API.
        description:
          type: string
          description: Description of the external API.
        documentation:
          $ref: '#/components/schemas/Documentation'
        endpoints:
          type: array
          description: Endpoints for the external API.
          items:
            type: string
        paths:
          type: array
          description: Resource paths for the external API.
          items:
            type: string
        attributes:
          type: object
          description: Custom attributes.
          additionalProperties:
            $ref: '#/components/schemas/AttributeValues'
        createTime:
          type: string
          format: date-time
          description: Output only. Time the external API was created.
          readOnly: true
        updateTime:
          type: string
          format: date-time
          description: Output only. Time the external API was last updated.
          readOnly: true
    EnumAttributeValue:
      type: object
      description: An enum value assigned to an attribute.
      properties:
        id:
          type: string
          description: ID of the enum value.
        displayName:
          type: string
          description: Output only. Display name of the enum value.
          readOnly: true
    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
    AttributeValues:
      type: object
      description: Values assigned to an attribute.
      properties:
        enumValues:
          type: object
          properties:
            values:
              type: array
              items:
                $ref: '#/components/schemas/EnumAttributeValue'
        stringValues:
          type: object
          properties:
            values:
              type: array
              items:
                type: string
        jsonValues:
          type: object
          properties:
            values:
              type: array
              items:
                type: string
        attribute:
          type: string
          description: Resource name of the attribute definition.
    Documentation:
      type: object
      description: Documentation associated with a resource.
      properties:
        externalUri:
          type: string
          description: URI of external documentation.
    ListExternalApisResponse:
      type: object
      properties:
        externalApis:
          type: array
          items:
            $ref: '#/components/schemas/ExternalApi'
        nextPageToken:
          type: string
        totalSize:
          type: integer
          format: int32
  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