Legion: A Python-based framework for building multi-agent systems with LLMs. Currently in pre-launch alpha

by LLMP-io · Agent Tool · ★ 118

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How to install Legion

pip install legion-ai

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 71/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-frameworkai-frameworkllm-agentmulti-agent-framework

Quick Facts

Stars118
Forks20
LanguagePython
CategoryAgent Tool
LicenseMIT
Quality Score71/100
Open Issues1
Last Updated2025-02-27
Created2025-01-07
Platformspython
Est. Tokens~39k

About Legion

Legion: A Provider-Agnostic Multi-Agent Framework Legion is a flexible and provider-agnostic framework designed to simplify the creation of sophisticated multi-agent systems. It provides a set of tools and abstractions to build, manage, and monitor AI agents, chains, teams, and graphs, allowing you to focus on the logic of your application rather than the underlying infrastructure.

Legion alternative? Top 6 similar tools

Looking for a Legion alternative? If you're comparing Legion with other agent tool tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

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    A simple and well-tailored LLM application framework that enables you to seamlessly integrate LLM capabilities

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    Design, conduct and analyze results of AI-powered surveys and experiments. Simulate social science and market

  • atlas-mcp-server by cyanheads · ⭐ 478

    A Model Context Protocol (MCP) server for ATLAS, a Neo4j-powered task management system for LLM Agents - imple

  • agentsilex by howl-anderson · ⭐ 456

    A transparent, minimal, and hackable agent framework. ~300 lines of readable code. Full control, no magic.

  • awesome-azure-openai-llm by kimtth · ⭐ 402

    A curated collection of resources for 🌌 Azure OpenAI, 🦙 LLMs (+RAG, Agents). Monthly Updates.

  • palico-ai by palico-ai · ⭐ 342

    Build, Improve Performance, and Productionize your LLM Application with an Integrated Framework

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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