Expanded Auth, New TTS Models, Console Updates, and Google Workspace Chat Integration
API Manager now supports custom authentication headers across Basic, Bearer, and OAuth 2.0 services. We also strengthened Tool definition validation by requiring a parameters object to prevent OpenAI API 400 errors. Channel Manager adds Google Chirp 2 and Deepgram Nova 3 as new text‑to‑speech options. In Console, Service Tools gain OAuth 2.0 fields, Agent Form includes an Agent Initiated toggle, and the favicon is refreshed. New agents default to Google Speech‑to‑Text v2. Finally, Tools introduces a public tool_integrations endpoint, enabling Google Workspace Chat integration with a Syllable agent. These updates improve reliability, configuration flexibility, and multimodal voice capabilities for agents.
v25.8.28
Aug 28, 2025
API Manager
Enabled passing custom authentication headers for basic, bearer, OAuth 2.0 services.
Improved validation of the Tool definition JSON schema by requiring that tool definitions have “parameters" field: {"type": "object", "properties": {}} to avoid HTTP 400 errors from the OpenAI API.
Channel Manager
Added Google Chirp 2 and Deepgram Nova 3 models as new text-to-speech options for agent configuration in Console.
Console
Added OAuth 2.0 fields for Service Tools in Console.
Added the ability to toggle Agent Initiated field in Console Agent Form.
Set the default Speech-To-Text provider to be Google Speech-to-Text v2 for new agents.
Tools
Added a public endpoint to the tool_integrations service to enable Google Workspace Chat integration with a Syllable agent.