Agent SDK overview - Claude DocsBuild custom AI agents with the Claude Agent SDKhttps://docs.claude.com/en/api/agent-sdk/overviewtool design is importantIntroducing advanced tool use on the Claude Developer PlatformClaude can now discover, learn, and execute tools dynamically to enable agents that take action in the real world. Here’s how.https://www.anthropic.com/engineering/advanced-tool-use