"I was backend lead at Manus. After building agents for 2 years, I stopped using function calling entirely. Here's what I use instead."
"I was a backend lead at Manus before the Meta acquisition. I've spent the last 2 years building AI agents — first at Manus, then on my own open-source agent runtime (Pinix) and agent (agent-clip). Along the way I came to a conclusion that surprised me:
A single run(command="...") tool with Unix-style commands outperforms a catalog of typed function calls.