> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nx1cloud.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List governance domains (classifier targets / Decision rules)

> Surface the platform's governance domains (DataHub/metastore) so they
can be picked as a classifier target or a Decision's domain rule. Degrades
gracefully (``available=false``) when the catalog is unreachable rather
than failing the page.



## OpenAPI

````yaml get /api/airouter/domains
openapi: 3.1.0
info:
  title: Nx1 AI API
  description: |

    AI API for Nx1 Data Platform Management and Automated Data Tasks.

    Authentication is required via PSK in Authorization header.

    Default PSK is | [ask a friend] |
  version: 0.10.2
servers: []
security: []
paths:
  /api/airouter/domains:
    get:
      tags:
        - AI Router
      summary: List governance domains (classifier targets / Decision rules)
      description: >-
        Surface the platform's governance domains (DataHub/metastore) so they

        can be picked as a classifier target or a Decision's domain rule.
        Degrades

        gracefully (``available=false``) when the catalog is unreachable rather

        than failing the page.
      operationId: list_domains_api_airouter_domains_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DomainListResponse'
      security:
        - OAuth2AuthorizationCodeBearer: []
        - APIKeyHeader: []
components:
  schemas:
    DomainListResponse:
      properties:
        available:
          type: boolean
          title: Available
          description: False when the governance catalog is unreachable.
        message:
          anyOf:
            - type: string
            - type: 'null'
          title: Message
        domains:
          items:
            type: string
          type: array
          title: Domains
      type: object
      required:
        - available
      title: DomainListResponse
      description: Governance domains available as classifier targets / Decision rules.
  securitySchemes:
    OAuth2AuthorizationCodeBearer:
      type: oauth2
      flows:
        authorizationCode:
          scopes: {}
          authorizationUrl: >-
            https://sso-rapid.rapid.nx1cloud.com/realms/rapid/protocol/openid-connect/auth
          tokenUrl: >-
            https://sso-rapid.rapid.nx1cloud.com/realms/rapid/protocol/openid-connect/token
    APIKeyHeader:
      type: apiKey
      in: header
      name: Authorization-PSK

````