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Claude Agent SDK

Anthropic's Python SDK for building production agent systems. Tool use, guardrails, agent handoffs, and orchestration. Released alongside Claude 4.

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The Claude Agent SDK provides building blocks for production agent systems in Python. It handles tool registration (define tools as Python functions, the SDK auto-generates schemas), guardrails (input/output validation), agent-to-agent handoffs (specialist agents that delegate), and multi-turn orchestration. It's designed to work with Claude's native tool use - no wrapper layers or prompt hacking. Released alongside Claude 4, it competes with OpenAI's Agents SDK and LangChain. I use it when building Python-based agents that need reliability and structured workflows.

ai framework agents anthropic python tool-use

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Get started with Claude Agent SDK

Anthropic's Python SDK for building production agent systems. Tool use, guardrails, agent handoffs, and orchestration. Released alongside Claude 4.

Try Claude Agent SDK

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