Agent SDK Overview

Anthropic

July 20, 2026

Building custom agents on the SDK. An advanced docs from Anthropic.

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About

Learn to build real things with Claude Code: agents, automations, and tools. It is a docs from Anthropic, made for operators and engineers building with Claude Code.

Who is it for

For operators and engineers building with Claude Code. If you already build with Claude and want the hard parts, this is for you.

Why

Most write-ups drown you in theory. This one is short and tells you what to actually do, so keep it open while you build.

What you learn

Connect Claude to your tools with MCP

Build agents, subagents, and hooks

Automate a workflow that runs on its own

Walk away with something you can reuse

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