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

# List Signal Anchor Dates

> List recent distinct detection dates (`detected_for_date`) that produced user-facing signals, newest first. Useful for building date pickers or polling for new detection runs — the population matches `listSignals` with default filters, so every returned day has at least one signal.



## OpenAPI

````yaml /api-reference/openapi.json get /{brand_id}/signals/anchors
openapi: 3.1.0
info:
  title: Scrunch Data API
  version: 0.1.0
servers:
  - url: https://api.scrunchai.com/v1
security: []
paths:
  /{brand_id}/signals/anchors:
    get:
      tags:
        - signals
      summary: List Signal Anchor Dates
      description: >-
        List recent distinct detection dates (`detected_for_date`) that produced
        user-facing signals, newest first. Useful for building date pickers or
        polling for new detection runs — the population matches `listSignals`
        with default filters, so every returned day has at least one signal.
      operationId: listSignalAnchors
      parameters:
        - name: brand_id
          in: path
          required: true
          schema:
            type: integer
            title: Brand Id
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            maximum: 365
            minimum: 1
            description: Maximum number of dates to return.
            default: 90
            title: Limit
          description: Maximum number of dates to return.
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APISignalAnchors'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - HTTPBearer:
            - query
components:
  schemas:
    APISignalAnchors:
      properties:
        dates:
          items:
            type: string
            format: date
          type: array
          title: Dates
          description: >-
            Distinct `detected_for_date` days with user-facing signals, newest
            first. Same population as `listSignals` with default filters.
      type: object
      required:
        - dates
      title: APISignalAnchors
      description: Recent distinct detection dates that produced signals.
    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:
    HTTPBearer:
      type: http
      scheme: bearer

````

## Related topics

- [List Signals](/api-reference/signals/list-signals.md)
- [Signals API: Detected changes in AI visibility](/api-reference/signals/overview.md)
- [Scrunch MCP Feature Reference and Example Prompts](/mcp/tools.md)