# Get Contact Signal Types

Returns the full list of supported signal types for contacts.

Endpoint: GET /v3/contacts/signals/types
Security: ApiKeyAuth

## Response 200 fields (application/json):

  - `signalTypes` (array)
    Example: ["allSignals","promotion","companyChange"]

## Response 401 fields (application/json):

  - `statusCode` (integer, required)
    HTTP status code
    Example: 400

  - `message` (string, required)
    Error message
    Example: "Validation failed"

  - `errors` (array)
    Detailed error messages (optional, only for validation errors)
    Example: ["entityType must be one of: contact, company"]