Agent tooling

Frameworks, SDKs and tools for building agents and running MCP servers.

CrewAI

Agent frameworks and SDKs

Teams of role-based agents working together

Stars: ★ 59.9k
Licence: MIT
Updated: today

Agent tooling
Official

LangGraph

Agent frameworks and SDKs

Stateful, long-running agents as graphs

Stars: ★ 43.5k
Licence: MIT
Updated: today

Agent tooling
Official

OpenAI Agents SDK (Python)

Agent frameworks and SDKs

OpenAI's lightweight framework for multi-agent workflows

Stars: ★ 30.1k
Licence: MIT
Updated: 2 days ago

Agent tooling
Official

smolagents

Agent frameworks and SDKs

A minimal agent library where agents write code

Stars: ★ 29.9k
Licence: Apache-2.0
Updated: 13 days ago

Agent tooling
Official

Mastra

Agent frameworks and SDKs

A TypeScript framework for agents, workflows and RAG

Stars: ★ 28.9k
Licence: Apache-2.0 (outside ee/)
Updated: today

Agent tooling
Official

FastMCP

Agent frameworks and SDKs

A high-level Python framework for MCP servers and clients

Stars: ★ 28.1k
Licence: Apache-2.0
Updated: yesterday

Agent tooling
Community

MCP Python SDK

Agent frameworks and SDKs

The official Python library for MCP servers and clients

Stars: ★ 24.6k
Licence: MIT
Updated: 2 days ago

Agent tooling
Official

Agent Development Kit (Python)

Agent frameworks and SDKs

Google's code-first toolkit for building and evaluating agents

Stars: ★ 21.9k
Licence: Apache-2.0
Updated: today

Agent tooling
Official

Pydantic AI

Agent frameworks and SDKs

Type-safe Python agents from the Pydantic team

Stars: ★ 20.7k
Licence: MIT
Updated: today

Agent tooling
Official

MCP TypeScript SDK

Agent frameworks and SDKs

The official TypeScript library for MCP servers and clients

Stars: ★ 13.6k
Licence: Apache-2.0 / MIT (MCP licence transition)
Updated: 6 days ago

Agent tooling
Official

FastAPI-MCP

MCP tooling

Expose FastAPI endpoints as MCP tools

Stars: ★ 12k
Licence: MIT
Updated: 1 year ago

Agent tooling
Community

MCP Inspector

MCP tooling

Visual tool for testing and debugging MCP servers

Stars: ★ 11.1k
Licence: Apache-2.0 / MIT (MCP licence transition)
Updated: 5 days ago

Agent tooling
Official

mcp-use

MCP tooling

Connect any LLM to any MCP server in a few lines

Stars: ★ 10.8k
Licence: MIT
Updated: 2 days ago

Agent tooling
Community

mcp-agent

MCP tooling

Build agents from MCP servers and simple workflow patterns

Stars: ★ 8.6k
Licence: Apache-2.0
Updated: 8 months ago

Agent tooling
Community

Claude Agent SDK (Python)

Agent frameworks and SDKs

Build agents on the same harness as Claude Code

Stars: ★ 8.3k
Licence: MIT
Updated: yesterday

Agent tooling
Official

Snyk Agent Scan (formerly mcp-scan)

MCP tooling

Scan installed MCP servers and skills for security risks

Stars: ★ 3.2k
Licence: Apache-2.0
Updated: 4 days ago

Agent tooling
Community

ToolHive

MCP tooling

Deploy and manage MCP servers securely

Stars: ★ 2.3k
Licence: Apache-2.0
Updated: today

Agent tooling
Community

Docker MCP Gateway

MCP tooling

Run MCP servers in containers behind one gateway

Stars: ★ 1.6k
Licence: MIT
Updated: 1 month ago

Agent tooling
Official

More collections

MCP servers99 tools

Every MCP server listed: connectors that give AI agents tools for a service or system.

Agent skills38 tools

SKILL.md skills, skill collections and prompt or workflow packs that teach agents how to do a job.

Official MCP servers79 tools

Servers published by the company behind the service, or by the MCP project itself.

Hosted (remote) MCP servers32 tools

Servers you connect to over HTTP, usually with OAuth sign-in, with nothing to install.

MCP reference servers7 tools

The MCP steering group's reference implementations, good for learning and testing.

Anthropic's skills17 tools

Skills from Anthropic's public anthropics/skills repository.