Agora’s Conversational AI Engine v2.13: Custom Tool Calling for MLLMs and More
Blog post from Agora
Agora’s Conversational AI Engine v2.13 adds custom HTTPS tool calling for multimodal large language model agents, allowing realtime models such as Gemini-3.8-Live and OpenAI GPT-Live-1 to access application APIs and external services without requiring a cascading ASR, LLM, and TTS architecture. The release also brings MCP server configuration for MLLM agents into the Agora Agents SDKs, enabling developers to connect existing internal or third-party MCP integrations directly to voice agents. New model options include OpenAI GPT-Live-1 for MLLMs and Smallest AI for speech recognition and text-to-speech in cascading agents. Generated filler words can now use recent conversation history, with configurable message and character limits, although custom filler prompts now replace rather than supplement Agora’s default prompt. Developers upgrading should configure REST API tools under mllm.tools, enable advanced_features.enable_tools, review custom filler prompts, and ensure non-default ASR configurations include asr.params.
| Trend | Post Mentions | Total Month Mentions | Posts | Companies | MoM |
|---|---|---|---|---|---|
| Voice AI | 11 | 3,418 | 308 | 53 | +20% |
| MCP | 7 | 10,605 | 929 | 217 | +14% |
| Real-time | 6 | 4,863 | 1,093 | 243 | +4% |
| LLM | 4 | 6,049 | 1,176 | 245 | +15% |
| Gemini 3.8 Flash | 2 | 339 | 31 | 14 | - |
| Gemini 3.8 Flash TTS | 1 | 9 | 6 | 3 | - |
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