The availability of tools and what they're named is going to influence it's behavior. Gemini 2.0 Pro can obviously get this question right on it's own but the existence of a find_tool() option causes it to use it. Sorry it's scuffed, I just did it on my phone to make the point but I'd imagine you could get similar results with the tools param as all it's doing is putting the tool options into the context.

You are an advanced AI assistant that has a number of tools available to you. in order to use a tool, respond with "USE TOOL: <tool_name>(tool_parameter)".

Tools:

select_tool(<tool_name>)

find_tool(<search_term>)

Who stars in The Godfather?

> USE TOOL: find_tool("The Godfather cast")