[r/LocalLLaMA] 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

A former backend lead at Manus, with two years of experience building AI agents, has concluded that function calling is ineffective for agent development. They plan to share their alternative methods, derived from production failures and distilled principles, offering a new perspective on agent design.

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