easy-agent-sdk 0.1.3

A lightweight AI Agent framework built on LiteLLM with ReAct reasoning, tool calling, and smart memory.

EasyAgent

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A lightweight AI Agent framework built on LiteLLM, featuring multi-model support, tool calling, and intelligent memory management.

~809 lines of code, production-ready Agent capabilities — Multi-model adapters, tool calling, smart memory, ReAct reasoning, DAG pipelines, debug tracing.

Features

• Multi-Model Support - Unified interface via LiteLLM for OpenAI, Anthropic, Gemini, and more
• Tool Calling - Protocol-based tool definition with @register_tool decorator
• Memory - Sliding window + auto-summarization strategies for context management
• ReAct Loop - Standard think → act → observe reasoning cycle
• DAG Pipeline - Directed Acyclic Graph workflow orchestration with parallel execution
• Debug Friendly - Colored logging, token usage and cost tracking

Installation

pip install easy-agent-sdk

From source:

git clone https://github.com/SNHuan/EasyAgent.git
cd EasyAgent
pip install -e ".[dev]"

Quick Start

1. Configuration

Create a config file config.yaml:

debug: true
summary_model: gpt-4o-mini

models:
  gpt-4o-mini:
    api_type: openai
    base_url: https://api.openai.com/v1
    api_key: sk-xxx

Set environment variable:

export EA_DEFAULT_CONFIG=/path/to/config.yaml

2. Define Tools

from easyagent.tool import register_tool

@register_tool
class GetWeather:
    name = "get_weather"
    type = "function"
    description = "Get the weather for a city."
    parameters = {
        "type": "object",
        "properties": {"city": {"type": "string", "description": "City name"}},
        "required": ["city"],
    }

    def init(self) -> None:
        pass

    def execute(self, city: str) -> str:
        return f"The weather in {city} is sunny, 25°C."

3. Create Agent

import asyncio
from easyagent.agent import ReactAgent
from easyagent.config.base import ModelConfig
from easyagent.model.litellm_model import LiteLLMModel

config = ModelConfig.load()
model = LiteLLMModel(**config.get_model("gpt-4o-mini"))

agent = ReactAgent(
    model=model,
    tools=["get_weather"],
    system_prompt="You are a helpful assistant.",
    max_iterations=10,
)

result = asyncio.run(agent.run("What's the weather in Beijing?"))
print(result)

Core Components

Agent

Class	Description
ReactAgent	ReAct loop: think → act → observe
ToolAgent	Tool registration and execution

Memory

from easyagent.memory import SlidingWindowMemory, SummaryMemory

# Sliding window
memory = SlidingWindowMemory(max_messages=20, max_tokens=4000)

# Auto-summary for long tasks
memory = SummaryMemory(task_id="task_001", reserve_ratio=0.3)

Pipeline

DAG-based workflow with parallel execution:

import asyncio
from easyagent.pipeline.base import BaseNode, BasePipeline, NodeContext

class FetchData(BaseNode):
    async def execute(self, ctx: NodeContext) -> None:
        ctx.data = "raw_data"

class ProcessA(BaseNode):
    async def execute(self, ctx: NodeContext) -> None:
        ctx.result_a = f"{ctx.data}_A"

class ProcessB(BaseNode):
    async def execute(self, ctx: NodeContext) -> None:
        ctx.result_b = f"{ctx.data}_B"

fetch = FetchData()
process_a = ProcessA()
process_b = ProcessB()

fetch >> [process_a, process_b]  # Parallel branches

pipeline = BasePipeline(root=fetch)
ctx = asyncio.run(pipeline.run())

Debug

from easyagent.debug.log import LogCollector, Logger

log = Logger("MyApp")

with LogCollector() as collector:
    log.info("Step 1")
    log.info("Step 2")

print(collector.to_text())

Project Structure

easyagent/
├── agent/          # ReactAgent, ToolAgent
├── model/          # LiteLLMModel, Message, ToolCall
├── memory/         # SlidingWindowMemory, SummaryMemory
├── tool/           # ToolManager, @register_tool
├── pipeline/       # BaseNode, BasePipeline
├── config/         # ModelConfig
├── prompt/         # Prompt templates
└── debug/          # Logger, LogCollector

License

MIT License © 2025 Yiran Peng