> ## 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.

# Update a classifier



## OpenAPI

````yaml put /api/airouter/classifiers/{classifier_id}
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/classifiers/{classifier_id}:
    put:
      tags:
        - AI Router
      summary: Update a classifier
      operationId: update_classifier_api_airouter_classifiers__classifier_id__put
      parameters:
        - name: classifier_id
          in: path
          required: true
          schema:
            type: string
            title: Classifier Id
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ClassifierUpsertRequest'
        required: true
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RouterClassifier'
        '400':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Bad Request
        '404':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Not Found
        '409':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Conflict
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - OAuth2AuthorizationCodeBearer: []
        - APIKeyHeader: []
components:
  schemas:
    ClassifierUpsertRequest:
      properties:
        name:
          type: string
          maxLength: 80
          minLength: 1
          title: Name
        description:
          anyOf:
            - type: string
            - type: 'null'
          title: Description
        classifier_type:
          type: string
          enum:
            - keyword
            - embedding
          title: Classifier Type
          default: keyword
        domain:
          type: string
          minLength: 1
          title: Domain
        keywords:
          items:
            type: string
          type: array
          title: Keywords
        phrases:
          items:
            type: string
          type: array
          title: Phrases
        operator:
          type: string
          enum:
            - OR
            - AND
          title: Operator
          default: OR
        threshold:
          type: number
          maximum: 1
          minimum: 0
          title: Threshold
          default: 0.7
        case_sensitive:
          type: boolean
          title: Case Sensitive
          default: false
        enabled:
          type: boolean
          title: Enabled
          default: true
      type: object
      required:
        - name
        - domain
      title: ClassifierUpsertRequest
      description: |-
        Create/update payload for a classifier. ``name`` is the stable rule
        name referenced by Decisions and emitted into the router YAML.
    RouterClassifier:
      properties:
        id:
          type: string
          title: Id
        name:
          type: string
          title: Name
        description:
          anyOf:
            - type: string
            - type: 'null'
          title: Description
        classifier_type:
          type: string
          enum:
            - keyword
            - embedding
          title: Classifier Type
          default: keyword
        domain:
          type: string
          title: Domain
        keywords:
          items:
            type: string
          type: array
          title: Keywords
        phrases:
          items:
            type: string
          type: array
          title: Phrases
        operator:
          type: string
          enum:
            - OR
            - AND
          title: Operator
          default: OR
        threshold:
          type: number
          title: Threshold
          default: 0.7
        case_sensitive:
          type: boolean
          title: Case Sensitive
          default: false
        enabled:
          type: boolean
          title: Enabled
          default: true
        created_by:
          anyOf:
            - type: string
            - type: 'null'
          title: Created By
        created_at:
          anyOf:
            - type: string
            - type: 'null'
          title: Created At
        updated_at:
          anyOf:
            - type: string
            - type: 'null'
          title: Updated At
      type: object
      required:
        - id
        - name
        - domain
      title: RouterClassifier
      description: |-
        A persisted heuristic classifier (keyword/embedding) mapping prompts
        to a governance domain. Compiled into the router config on publish.
    ErrorResponse:
      properties:
        error:
          type: string
          title: Error
          description: A brief description of the error that occurred.
        code:
          type: integer
          title: Code
          description: The HTTP status code associated with the error.
          default: 500
      type: object
      required:
        - error
      title: ErrorResponse
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  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

````