Gemini does not uses tools, until I directly asks for it.

[AntonIXO]

Hi,
I have been building RAG chatbot, but the problem is that LLM does not use the tool automatically (as defined in system prompt), until I directly ask for it. Screenshot:

I am using Gemini ai-studio as in the official Vercel example.
I tried to add:

• maxSteps: 5,
• experimental_continueSteps: true,
• experimental_toolCallStreaming: true,

I tried to play with system prompt. Different prompting techniques...
Nothing helps.
Route that handles useChat requests: https://gist.github.com/AntonIXO/92df1d5ff5119d14bea209767ce4adf3

Anything I am doing wrong, or it's the problem on Google side?

[lgrammel]

Can you check if there are any errors during tool calling?

You can enable error msg forwarding or log the errors as follows: https://sdk.vercel.ai/docs/ai-sdk-ui/chatbot#error-messages

[AntonIXO]

are any errors

Tried to enable error msg as you say. There are absolutely no errors, tools always call successfully.
The problem is that Gemini does not call the tool, until I directly ask for it(check screenshot from 1'st message)
Using the latest 4.0 sdk version, also.