List all available voices based on the provided filter.
⚠️ Deprecation Notice: This endpoint is deprecated. Use the Voices API’s List Voices instead for new features and better performance. This API is scheduled to be removed on July 1, 2026.
Your authentication credentials. For Basic authentication, please populate Basic $INWORLD_RUNTIME_BASE64_CREDENTIAL
A filter expression to filter the voices. Currently, only the following filter is supported:
language: Expects an ISO 639-1 language code. For example, language=en.The list of voices.