I WAS BACKEND LEAD AT MANUS. AFTER BUILDING AGENTS FOR 2 YEARS, I STOPPED USING FUNCTION CALLING ENTIRELY. HERE'S WHAT I USE INSTEAD

Summary from the TLDR AI newsletter

A single run(command="...") tool with Unix-style commands outperforms a catalog of typed function calls. Unix made the design decision 50 years ago to make everything a text stream. Large language models made an almost identical decision by making everything tokens. The text-based system that Unix uses is a natural fit for large language models. They can act as terminal operators faster than any human. Developers just need to take what Unix has proven over the last half-century and hand it directly to AI.