Voice commands not triggering tool calls in the Solar System App SDK example

ChatGPT Apps SDK
1

Hi everyone,
I’m using the Solar System example from the OpenAI App SDK preview. Everything works correctly when I give text commands in the chat (e.g., “go to Mars”), and the tool calls reach my MCP server without issues.

However, when I give voice commands with the exact same phrasing, ChatGPT responds verbally but no tool call is triggered, and nothing reaches my MCP endpoint. The behavior is consistent across attempts, sessions, and different phrasing.

I also commented on GitHub Issue #105 on the example project, which seems to describe the same problem, but I’m posting here to ask:

  • Is this a known limitation of voice interactions in the current SDK preview?

  • Has anyone managed to get tool calls to fire correctly from voice input?

Thanks!