Output Schema for CodeAct AI Agents: From Trial-and-Error to Predictive Planning

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menix · 4h ago

The latest Model Context Protocol introduces Output Schema: agents now know the exact data structure a tool will return before calling it.

This eliminates the "print-and-inspect" pattern where CodeAct agents call tools just to discover what data they get back. Instead of multi-step exploration, agents can write complete, precise programs from the start.

What's new: Tools declare their output schemas upfront

What's better: Agents plan complete execution paths instead of reactive discovery

Now supported in Hugging Face smolagents.

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Output Schema for CodeAct AI Agents: From Trial-and-Error to Predictive Planning

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