Oh wow :D Not commenting on the larger picture of why or why not Mistral might be doing that, but commenting on the idea itself: I plan to build my own harness soon, and one of its core tenants was, from the beginning, that it would parse every tool call the LLM attempts and executes them itself. I most cases, that would mean to delegate to one of the tools of the rust coreutils, or making a call to a LSP server.

My reasoning: - That way I will have maximum control over how the LLM can interact with the world (i.e. I can even narrow down which arguments I support/not support) - The monitoring story should be great as well, since every interaction with the outside world happens at one place only - I can add functionality as I go, and can understand how the harness changes and why it does what it does from the ground up

The biggest challenge I foresee is with the LLMs making tool calls and having them react to the results. I also wonder how far I will even get with this :D

Back to topic; "code implemented tool calls" is basically my "oh yeah my harness can do tool calls too" (and everything I need is implemented in one codebase, in... code)