Combining fileSearch e functionDeclarations in Gemini API

Gemini API
1

I’m having trouble combining the fileSearch (RAG) and functionCalling tools. They work fine individually, but when both are enabled, the documentation search fails. Has anyone had any experience with this? I also tried to be very detailed with the system instructions.

"tools": [
    {
        "functionDeclarations": [
            {
                "name": "support_count",
                "description": ...
				...
            },
        ]
    },
    {
        "fileSearch": {
            "fileSearchStoreNames": [
                "fileSearchStores/my-store-nsr9z3mjvyd3"
            ]
        }
    }
]
1 Like
3

Hi @electro ,

Welcome to the Forum!
Thank you for reaching out!
Could you please let us know which Gemini Model you are using?

5

Thanks. I tried with the gemini-2.5-flash and gemini-2.5-pro models: the file search doesn’t work, and the function calling tool always has top priority. I’m interested to know if anyone has successfully combined both tools…

7

Hi @electro, Thanks for sharing the details. Please note that Multi-tool use is a-Live API only feature at the moment. The run() function declaration, which handles the asynchronous websocket setup, is omitted for brevity.
multi_tool_calling