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

# Add tags to business

> Add tags to an existing business. Tags are merged with existing tags (additive operation).



## OpenAPI

````yaml /api-reference/openapi.yaml post /v1/businesses/{business_id}/tags
openapi: 3.0.1
info:
  title: Slant Public API V1
  version: v1
  description: Public API for creating and managing resources in Slant
  contact:
    name: Slant API Support
    email: api@slant.com
servers:
  - url: https://api.slant.app
security:
  - bearer: []
paths:
  /v1/businesses/{business_id}/tags:
    parameters:
      - name: business_id
        in: path
        description: Business ID
        required: true
        schema:
          type: string
    post:
      tags:
        - Businesses
      summary: Add tags to business
      description: >-
        Add tags to an existing business. Tags are merged with existing tags
        (additive operation).
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - tag_ids
              properties:
                tag_ids:
                  type: array
                  items:
                    type: string
                  description: Array of tag IDs to add
                  example:
                    - abc123
                    - def456
        required: true
      responses:
        '201':
          description: tags added successfully
          content:
            application/json:
              schema:
                type: object
                required:
                  - tag_ids
                properties:
                  tag_ids:
                    type: array
                    items:
                      type: string
                    description: Complete list of tag IDs after operation
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          description: unauthorized - missing or invalid token
          content:
            application/json:
              schema:
                type: object
                required:
                  - error
                  - detail
                properties:
                  error:
                    type: string
                    description: Error code
                    enum:
                      - token_missing
                      - token_invalid
                  detail:
                    oneOf:
                      - type: string
                        description: Human-readable error description
                      - type: array
                        items:
                          type: string
                        description: Array of validation error messages
        '403':
          $ref: '#/components/responses/Forbidden'
        '422':
          description: unprocessable entity - invalid payload
          content:
            application/json:
              schema:
                type: object
                required:
                  - error
                  - detail
                properties:
                  error:
                    type: string
                    description: Error code
                    enum:
                      - invalid_payload
                      - record_invalid
                      - parameter_missing
                  detail:
                    oneOf:
                      - type: string
                        description: Human-readable error description
                      - type: array
                        items:
                          type: string
                        description: Array of validation error messages
      security:
        - bearer: []
components:
  responses:
    BadRequest:
      description: Bad Request - invalid JSON
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          examples:
            invalid_json:
              value:
                error: invalid_json
                detail: Request body must be valid JSON
    Forbidden:
      description: Forbidden - client not found or user not linked
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          examples:
            client_not_found:
              value:
                error: client_not_found
                detail: Invalid or inactive client
            user_not_linked:
              value:
                error: user_not_linked
                detail: No matching user for provided token
            principal_book_missing:
              value:
                error: principal_book_missing
                detail: User must have a principal book
            not_authorized:
              value:
                error: not_authorized
                detail: You are not permitted to perform this action
  schemas:
    Error:
      type: object
      required:
        - error
        - detail
      properties:
        error:
          type: string
          description: Error code
        detail:
          type: string
          description: Human-readable error description
  securitySchemes:
    bearer:
      type: http
      scheme: bearer
      bearerFormat: OAuth
      description: OAuth 2.0 Bearer Token from Clerk authentication

````