21st Agents SDK

SDK to add an Claude Code AI agent to your app

#Developer Tools #Artificial intelligence #Automation

21st Agents SDK

21st Agents SDK Introduction

The 21st Agents SDK is a developer toolkit for integrating AI agents, specifically Claude Code AI, into applications with minimal setup. It enables defining agents in TypeScript, deploying with a single command, and includes a production-ready chat UI with features like streaming, session management, billing, and observability. This allows developers to focus on custom agent logic rather than backend infrastructure, backed by Y Combinator support.

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More about 21st Agents SDK

Pricing

Paid

Platforms

Web

Listed

Mar 12, 2026

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