AI Agent Frameworks Packages
Frameworks for building LLM agents with tools, memory, and orchestration for multi-step, autonomous workflows (LangChain, LlamaIndex, CrewAI, LangGraph).
Packages in AI Agent Frameworks
Kind
Sort:Used by Most Apps
MCP TypeScript SDK
The official TypeScript SDK for building Model Context Protocol servers and clients.
AI SDK
Provider-agnostic TypeScript toolkit for building AI apps and agents with any LLM.
Anthropic TypeScript SDK
The official TypeScript and JavaScript SDK for building on Anthropic's Claude API.
python-sdk
The official Python SDK for building Model Context Protocol servers and clients that expose tools, resources, and prompts to any LLM host.
LangChain.js
The TypeScript framework for building LLM-powered apps and AI agents from interoperable, swappable components.
LangChain
The most widely adopted Python framework for building LLM-powered agents and applications
LangGraph
A low-level orchestration framework for building stateful, multi-actor LLM agents as graphs
Pi
Self-extensible AI coding agent CLI with a terminal UI, tool calling, and session management
Daytona Python SDK
The official Python SDK for creating and managing secure Daytona AI code sandboxes
ACP TypeScript SDK
Official TypeScript SDK for the Agent Client Protocol connecting editors and AI coding agents
FastMCP
The fast, Pythonic framework for building Model Context Protocol servers, clients, and apps
Pydantic AI
A type-safe Python agent framework built by the Pydantic team
LangChain Community
Community-maintained third-party integrations for LangChain, covering chat models, vector stores, tools, and retrievers.
LangGraph
A low-level JavaScript/TypeScript framework for building stateful, controllable LLM agents as graphs, with durable execution and human-in-the-loop.
E2B
Python SDK for spinning up secure, isolated cloud sandboxes where AI agents can safely run code.
MCP Go SDK
The official Go SDK for building Model Context Protocol servers and clients, maintained in collaboration with Google.
@e2b/code-interpreter
JavaScript/TypeScript SDK for running AI-generated code in stateful, isolated E2B cloud sandboxes
Chat SDK
A unified TypeScript SDK for building chat bots and AI agents across every major messaging platform
LangChain.js Community
Third-party integrations for LangChain.js — chat models, vector stores, embeddings, tools, and document loaders for dozens of providers.
rmcp
The official async Rust SDK for building Model Context Protocol clients and servers
OpenAI Agents SDK
OpenAI's provider-agnostic Python framework for building multi-agent LLM workflows with tools, guardrails, and tracing.
Mastra Core
The TypeScript framework for building AI agents, workflows, and RAG apps with unified access to 40+ LLM providers.
assistant-ui
Composable React primitives and a headless runtime for building production-grade AI chat interfaces.
CrewAI
Multi-agent AI orchestration framework for role-playing autonomous agents
