Directory · Agents
smolagents
Hugging Face's minimalist Python library for building code-executing AI agents in a few lines, with Hub integration.
Best for
Lightweight code-first agents without heavy framework overhead
More agents tools
AutoGen
Agents · Microsoft · United States
Microsoft's open-source framework for building multi-agent AI systems where agents converse and cooperate to solve tasks.
Best for
Multi-agent research and orchestration experiments in Python or .NET
AutoGPT
Agents · Significant Gravitas · United Kingdom
Open-source platform for building and running autonomous AI agents that chain reasoning steps toward user-defined goals.
Best for
Experimenting with autonomous goal-driven agents and low-code agent blocks
Claude Agent SDK
Agents · Anthropic · United States
Anthropic's SDK for building autonomous agents on the harness behind Claude Code, with tool use, hooks, and MCP support.
Best for
Building custom coding or computer-using agents powered by Claude