From: w3ctag/design-reviews#1093 (comment)
We suggest elaborating on the Tool use section a bit more. For example, it’s not clear how the session model understands to pick/use the "getWeather" tool from the list of tools or if it should fall back to the underlying model. Consider giving some clarification on how/when the model decides to use a tool and how it makes that determination (if only because this is non-obvious for those without significant expertise in the area). Is the tool use behavior consistent across models? What if it doesn’t pick the tool and it hallucinates the weather instead? It would be great to clarify if the model is expected to ingest the JavaScript of the tool to support making the determination to use the tool.
From: w3ctag/design-reviews#1093 (comment)