Comment by keeda

WTF! I just looked at the filing date of March 2026 and assumed this was still an application! I realize now that even for a patent application it had published too early, since they usually get published 18 months after filing.

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.