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

# List signals on a contacts list

> Return every signal currently attached to any contact in the list, grouped by contact_id. Contacts with no attached signals are omitted. Customer API keys read their own bound account; staff TAMTAM API keys must supply an explicit `account_id`.



## OpenAPI

````yaml /reference/openapi.yaml get /v2/contacts-lists/{listID}/signals
openapi: 3.1.0
info:
  title: Tamtam Public API
  version: 2.0.0
servers:
  - url: https://api.tamtam.ai/api
security: []
paths:
  /v2/contacts-lists/{listID}/signals:
    get:
      tags:
        - Signals
      summary: List signals on a contacts list
      description: >-
        Return every signal currently attached to any contact in the list,
        grouped by contact_id. Contacts with no attached signals are omitted.
        Customer API keys read their own bound account; staff TAMTAM API keys
        must supply an explicit `account_id`.
      operationId: list-contacts-list-signals
      parameters:
        - description: Contacts list UUID
          in: path
          name: listID
          required: true
          schema:
            description: Contacts list UUID
            type: string
        - description: Target account UUID. Required for staff; ignored for customer keys.
          explode: false
          in: query
          name: account_id
          schema:
            description: >-
              Target account UUID. Required for staff; ignored for customer
              keys.
            type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListContactsListSignalsOutputBody'
          description: OK
        default:
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/ErrorModel'
          description: Error
      security:
        - apikeyAuth: []
        - bearerAuth: []
components:
  schemas:
    ListContactsListSignalsOutputBody:
      additionalProperties: false
      properties:
        contacts:
          description: >-
            Contacts that currently have at least one signal attached on the
            list
          items:
            $ref: '#/components/schemas/ContactsListContactSignalsDto'
          type:
            - array
            - 'null'
      required:
        - contacts
      type: object
    ErrorModel:
      additionalProperties: false
      properties:
        detail:
          description: >-
            A human-readable explanation specific to this occurrence of the
            problem.
          examples:
            - Property foo is required but is missing.
          type: string
        errors:
          description: Optional list of individual error details
          items:
            $ref: '#/components/schemas/ErrorDetail'
          type:
            - array
            - 'null'
        instance:
          description: >-
            A URI reference that identifies the specific occurrence of the
            problem.
          examples:
            - https://example.com/error-log/abc123
          format: uri
          type: string
        status:
          description: HTTP status code
          examples:
            - 400
          format: int64
          type: integer
        title:
          description: >-
            A short, human-readable summary of the problem type. This value
            should not change between occurrences of the error.
          examples:
            - Bad Request
          type: string
        type:
          default: about:blank
          description: A URI reference to human-readable documentation for the error.
          examples:
            - https://example.com/errors/example
          format: uri
          type: string
      type: object
    ContactsListContactSignalsDto:
      additionalProperties: false
      properties:
        contact_id:
          type: string
        signals:
          items:
            $ref: '#/components/schemas/ContactSignalDto'
          type:
            - array
            - 'null'
      required:
        - contact_id
        - signals
      type: object
    ErrorDetail:
      additionalProperties: false
      properties:
        location:
          description: >-
            Where the error occurred, e.g. 'body.items[3].tags' or
            'path.thing-id'
          type: string
        message:
          description: Error message text
          type: string
        value:
          description: The value at the given location
      type: object
    ContactSignalDto:
      additionalProperties: false
      properties:
        attached_at:
          format: date-time
          type: string
        details:
          type: string
        emoji:
          type: string
        id:
          type: string
        title:
          type: string
      required:
        - id
        - title
        - emoji
        - details
        - attached_at
      type: object
  securitySchemes:
    apikeyAuth:
      description: Account API key passed in the Authorization header
      in: header
      name: Authorization
      type: apiKey
    bearerAuth:
      description: Bearer JWT obtained via the OAuth 2.1 authorization flow
      scheme: bearer
      type: http

````