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

# Assign and unassign tags in bulk

> Both directions in one call, because the usual edit is a swap — doing it as two calls leaves a window where keywords are in both tags or neither.



## OpenAPI

````yaml https://api.surnex.io/docs/openapi.json post /v1/projects/{projectId}/tracking/tags/assign
openapi: 3.1.0
info:
  title: Surnex API
  version: 1.0.0
  description: >-
    The SEO platform's API.


    **The API is the product.** The dashboard is one client and the MCP server
    at `/mcp` is another. If a number needs deriving, a service derives it —
    never a React component, or the two clients drift.


    **Two kinds of auth.** The dashboard sends a Supabase access token as a
    Bearer JWT. MCP agents send `X-API-Key`, and the organization is resolved
    from the key.


    **Two data modes.** SERP results and Google Trends are fetched live on
    request. Everything else is written by the worker and read from Postgres, so
    a freshly-created project returns empty until its jobs complete.
servers:
  - url: https://api.surnex.io
    description: Surnex API
security: []
paths:
  /v1/projects/{projectId}/tracking/tags/assign:
    post:
      tags:
        - tracking
      summary: Assign and unassign tags in bulk
      description: >-
        Both directions in one call, because the usual edit is a swap — doing it
        as two calls leaves a window where keywords are in both tags or neither.
      parameters:
        - schema:
            type: string
            format: uuid
          required: true
          name: projectId
          in: path
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                keyword_ids:
                  type: array
                  items:
                    type: string
                    format: uuid
                  minItems: 1
                  maxItems: 500
                add_tag_ids:
                  type: array
                  items:
                    type: string
                    format: uuid
                  default: []
                remove_tag_ids:
                  type: array
                  items:
                    type: string
                    format: uuid
                  default: []
              required:
                - keyword_ids
      responses:
        '200':
          description: How many assignments were added and removed
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    enum:
                      - true
                  data:
                    type: object
                    nullable: true
                    properties:
                      assigned:
                        type: number
                      unassigned:
                        type: number
                    required:
                      - assigned
                      - unassigned
                required:
                  - success
                  - data

````

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