21st Agents SDK is the fastest way to add an AI agent to your app. It provides built-in UI, chat history, spend limits, tool execution, memory, and observability.
21st Agents SDK enables developers to add AI agents to their applications quickly and efficiently. The SDK provides a comprehensive solution for integrating AI capabilities without building infrastructure from scratch.
The SDK includes built-in UI components, chat history management, spend limits to control costs, tool execution capabilities, memory functionality, and observability features. It supports streaming, session management, usage billing, and deployment automation.
Developers can define their agent in TypeScript and deploy it with a single command. The SDK handles the underlying infrastructure so developers can focus on creating unique agent capabilities rather than managing technical complexities.
The product helps developers accelerate AI integration by providing production-ready components and infrastructure. It eliminates the need to build chat interfaces, billing systems, and monitoring tools from scratch.
The SDK works with Next.js, React, TypeScript, Python, OpenAI, Vercel, Node.js, and any framework. It's designed for developers building applications that require AI agent functionality.
Key Features
- •Built-in UI components that provide ready-to-use chat interfaces for AI agents without requiring custom development
- •Chat history management system that maintains conversation context and session data across user interactions
- •Spend limits functionality allowing developers to control and monitor AI usage costs and prevent budget overruns
- •Tool execution capabilities enabling AI agents to interact with external systems and perform automated tasks
- •Memory functionality that preserves agent state and context between sessions for continuous conversations
- •Observability features providing monitoring, logging, and analytics for agent performance and usage patterns
Publisher
A
admin
Launch Date2026-03-09
Platformweb
Pricingfree
Tech Stack
#Next.js#React#TypeScript#Python#OpenAI#Vercel