MIT License

v0.0.1

The world's most intuitivemulti-agent framework.

Build, deploy, and scale multi-agent systems with Legion's powerful Python framework. Open source and production-ready.

example.py

from legion import agent, tool

# Define your agent
@agent(
    model="openai:gpt-4o-mini",
    temperature=0.2,
)
class MathHelper:
    """You are an expert at math."""

# Use it
agent = MathHelper()

response = agent.process("What is 2 + 2?")

Our Focus

Making AI development simple

Provider Agnostic

Connect to any LLM provider or use your own models. Legion adapts to your infrastructure.

Intuitive Syntax

Write multi-agent systems in clean, Pythonic code. No complex configurations needed.

example.py

@agent(
    model="ollama:llama3.3",
    tools=[jira_tool, github_tool]
)
class ProjectManager:
    """You are an expert PM who

Production Ready

Built for scale with monitoring, error handling, and enterprise-grade security.

System Latency50.0ms

Components

Simple, modular, and powerful components

Legion's component-based architecture helps you build complex systems with less code and lower costs. Each component is designed to be modular and reusable, making it easy to create sophisticated AI applications.

40%

Less Code

15%

Lower API Costs

Create AI Agents

Organize Them (Coming Soon)

Agents

Autonomous entities that can understand, plan, and execute tasks using natural language

Chains

Sequential workflows that connect blocks and agents to accomplish complex tasks

Tools

Reusable functions that agents can leverage to interact with external systems and APIs

Teams

Collaborative groups of agents that work together to solve complex problems

Blocks

Composable units of functionality that can be chained together to create complex behaviors

Graphs

Complex networks of agents and chains that can handle parallel and conditional execution

Component Registry (Coming Soon)

Import pre-built components and save time

Soon, you'll be able to access a growing library of community-built components. Install them directly into your project with a single command, complete with source code for full transparency and customization.

terminal

$pip install legion-ai-components/acme/sales-agent

✓ Successfully installed sales-agent

Explorer

project

components

sales-agent

agent.py

tools.py

config.py

Build with Legion

Designed for — well, anything

SaaS Products

Enhance your SaaS with AI agents that automate workflows, provide customer support, and deliver personalized experiences.

Client

Server

legion.process()

Sales Teams

Empower sales teams with agents that qualify leads, automate outreach, and provide real-time conversation intelligence.

Leads.csv2 leads selected

enriching lead data...

Marketing Agencies

Scale content creation and campaign management with agents that research, write, and optimize across channels.

Version A

24% CTR

Version B

38% CTR

analyzing variants...

Version B shows 58% higher engagement in first paragraph

Research Teams

Accelerate research and analysis with agents that gather data, identify patterns, and generate comprehensive reports.

Pattern Analysis

analyzing data

Pattern Alpha

Pattern Beta

Identified recurring pattern in data cluster beta

Get Started

Start building in minutes

Legion is designed to be intuitive and easy to use. Install with pip, import the library, and start creating powerful multi-agent systems in just a few lines of code.

View Quickstart Guide