Ollama's gemma4 renderer silently drops tool parameters named type or description, and the model invents a value
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TL;DR : define a tool for a gemma4 model in Ollama with a parameter whose name is type , description , properties , required or nullable , and the model is never shown that parameter's definition. It is still listed under required:[…] in the rendered declaration, so the model knows it must supply s…
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- 2026-09-16 02:02 · DEV Community — AI
Ollama's gemma4 renderer silently drops tool parameters named type or description, and the model invents a value