This is not a patent application. This is granted. They applied in March and was fast-tracked & issued in June. This is a full grant.
You can see the claims here: https://ibb.co/k2mVVkFN
You can see the claims here: https://ibb.co/k2mVVkFN
Turns out it was fast-tracked, which is why it was issued in ~2 months. It does claim priority to an earlier filing so the invention date is indeed March 2006. Not a single claim was questioned or rejected, it went straight to grant!
Yeah, unless I'm misreading claim 1, it seems iffy. From a quick glance at the spec, maybe the novel part is that all tool calls are executed in the sandboxed code block, thus keeping the intermediate results from polluting the context. But I'm not sure if that's different from existing systems like LangChain.