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# Самокорректирующийся агент # SelfCorrecting Agent
## Описание This repository demonstrates a minimal setup for a selfcorrecting agent using **langgraph** and **langchainopenai**.
The project includes:
Данный проект реализует простого **самокорректирующегося агента** на Node.js. Агент генерирует ответ на заданный вопрос, а затем использует API OpenAI для проверки и улучшения своего ответа. Это демонстрационный пример того, как можно интегрировать модель GPT в цикл самокоррекции. - `package.json` declares the required dependencies and a start script.
- `src/index.js` imports the libraries, creates an OpenAI LLM instance, and runs a simple prompt.
## Требования ## Setup
- Node.js версии 18+ (рекомендуется LTS)
- npm (или yarn)
- **Пакеты, необходимые для работы проекта:**
- `dotenv` – для загрузки переменных окружения из файла `.env`
- `openai` – официальный клиент OpenAI для взаимодействия с API
- `jest` – для запуска тестов (только в режиме разработки)
## Установка
```bash ```bash
# Клонируйте репозиторий # Install dependencies
git clone https://git.brojs.ru/kuzakhmetovartur/ekzamen-samokorrektiruyuschiysya-agent.git
cd ekzamen-samokorrektiruyuschiysya-agent
# Установите зависимости
npm install npm install
```
## Конфигурация # Run the example
Создайте файл `.env` в корне проекта и добавьте ваш ключ API OpenAI:
```dotenv
OPENAI_API_KEY=sk-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
```
> ⚠️ **Важно**: Никогда не публикуйте ваш ключ API в публичных репозиториях.
## Использование
Запустите скрипт:
```bash
npm start npm start
``` ```
Пример вывода: > **Note**: To get a real response from the OpenAI API, set the `OPENAI_API_KEY` environment variable before running the script.
```
Вопрос: Какой язык программирования лучше всего подходит для веб-разработки?
Ответ: JavaScript является популярным выбором для веб-разработки благодаря своей гибкости и широкому сообществу.
Самокоррекция: После проверки, ответ можно уточнить: JavaScript, особенно в сочетании с фреймворками вроде React или Vue, обеспечивает быстрый и интерактивный пользовательский интерфейс.
```
## Тесты
Для запуска тестов используйте:
```bash ```bash
npm test export OPENAI_API_KEY=your_api_key_here
npm start
``` ```
Тесты находятся в папке `__tests__` и проверяют базовую работу агента. The script will log the loaded modules and the response from the LLM.
## Лицензия
MIT © 2026
---
> **Примечание**: Этот проект создан в рамках экзамена по теме «Самокорректирующийся агент» и служит демонстрацией базовой реализации. Для продакшн‑использования требуется более тщательная обработка ошибок, логирование и масштабирование.
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from langchain_openai import ChatOpenAI from langchain_openai import OpenAI
from langgraph import Graph
def main(): def main():
# Simple test to ensure imports work # Initialize OpenAI LLM
try: llm = OpenAI(model="gpt-3.5-turbo")
llm = ChatOpenAI() # Create a simple LangGraph graph instance
print("LangChain OpenAI import successful. LLM instance created.") graph = Graph()
except Exception as e: print("OpenAI and LangGraph imports succeeded.")
print(f"Error creating LLM instance: {e}") print(f"LLM instance: {llm}")
print(f"Graph instance: {graph}")
if __name__ == "__main__": if __name__ == "__main__":
main() main()
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{ {
"name": "self-correcting-agent", "name": "self-correcting-agent",
"version": "1.0.0", "version": "1.0.0",
"description": "A simple Node.js implementation of a selfcorrecting agent that uses the OpenAI API to review and improve its own responses.", "description": "Selfcorrecting agent example using langgraph and langchainopenai",
"main": "index.js", "main": "src/index.js",
"type": "module",
"scripts": { "scripts": {
"start": "node index.js", "start": "node src/index.js"
"test": "jest"
}, },
"keywords": [
"openai",
"self-correcting",
"agent",
"nodejs"
],
"author": "Your Name",
"license": "MIT",
"dependencies": { "dependencies": {
"dotenv": "^16.4.5", "langgraph": "latest",
"openai": "^4.20.0" "langchain-openai": "latest"
},
"devDependencies": {
"jest": "^29.7.0"
} }
} }
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langgraph==0.0.1 langchain-openai
langchain==0.1.0 langgraph
openai==1.0.0
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# Package initialization for src # Package initialization for the graph project
# No additional code required
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"""
Graph definition using LangGraph.
"""
from typing import Dict, Any from typing import Dict, Any
from langgraph.graph import StateGraph from langgraph.graph import StateGraph, END
from src.nodes import ReflectState, draft_answer, reflect, rewrite from langchain_core.messages import AIMessage, HumanMessage
from src.utils import get_llm, format_state
# Define the state type
State = Dict[str, Any]
def ask_llm(state: State) -> State:
"""
Node that sends the user's question to the LLM and stores the answer.
"""
llm = get_llm()
question = state.get("question", "")
# Create a conversation with the LLM
response = llm.invoke([HumanMessage(content=question)])
# Store the answer in the state
state["answer"] = response.content
return state
def final(state: State) -> State:
"""
Final node that simply returns the state unchanged.
"""
return state
def build_graph() -> StateGraph: def build_graph() -> StateGraph:
graph = StateGraph(ReflectState) """
Builds and returns the LangGraph graph.
"""
graph = StateGraph(State)
# Add nodes # Add nodes
graph.add_node("draft_answer", draft_answer) graph.add_node("ask", ask_llm)
graph.add_node("reflect", reflect) graph.add_node("final", final)
graph.add_node("rewrite", rewrite)
# Define transitions # Define edges
graph.set_entry_point("draft_answer") graph.set_entry_point("ask")
graph.add_edge("draft_answer", "reflect") graph.add_edge("ask", "final")
graph.add_edge("final", END)
# Conditional edge after reflect
def decide_next(state: ReflectState) -> str:
if state["verdict"] == "ok":
return "end"
if state["round"] < state["max_rounds"]:
return "rewrite"
return "end"
graph.add_conditional_edges("reflect", decide_next, {"rewrite": "rewrite", "end": "end"})
graph.add_edge("rewrite", "reflect")
return graph return graph
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import Graph from './graph.js'; import * as langgraph from 'langgraph';
import { OpenAI } from 'langchain-openai';
const g = new Graph(); console.log('langgraph module loaded:', typeof langgraph);
console.log('OpenAI class loaded:', typeof OpenAI);
g.addNode('A'); const llm = new OpenAI({
g.addNode('B'); apiKey: process.env.OPENAI_API_KEY || '',
g.addNode('C'); modelName: 'gpt-3.5-turbo',
});
g.addEdge('A', 'B'); (async () => {
g.addEdge('B', 'C'); const prompt = 'Hello, world!';
try {
console.log('Before reflexive:'); const response = await llm.invoke(prompt);
console.log(g.getAdjacencyList()); console.log('LLM response:', response);
} catch (error) {
g.reflexive(); console.error('Error invoking LLM:', error);
}
console.log('After reflexive:'); })();
console.log(g.getAdjacencyList());
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import { app } from './langgraph';
async function main() {
const result = await app.invoke({ input: 'Hello world' });
console.log('Final result:', result);
}
main().catch((err) => {
console.error('Error during execution:', err);
});
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import { StateGraph } from 'langgraph';
export type State = {
input: string;
output?: string;
};
const startFn = (state: State) => {
// The start node simply passes the initial state through.
return state;
};
const reflection = (state: State) => {
console.log('Reflection node:', state);
return state;
};
const rewriting = (state: State) => {
const newState = { ...state, output: state.input.toUpperCase() };
console.log('Rewriting node:', newState);
return newState;
};
const end = (state: State) => {
console.log('End node:', state);
return state;
};
export const graph = new StateGraph<State>();
graph.addNode('start', startFn);
graph.addNode('reflection', reflection);
graph.addNode('rewriting', rewriting);
graph.addNode('end', end);
graph.setEntryPoint('start');
graph.addEdge('start', 'reflection');
graph.addEdge('reflection', 'rewriting');
graph.addEdge('rewriting', 'end');
export const app = graph.compile();
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import os """
from langchain_openai import ChatOpenAI Entry point for running the LangGraph example.
import langgraph """
from src.graph import build_graph
from src.utils import format_state
def main(): def main():
# Print langgraph version to confirm import # Build the graph
print("langgraph version:", langgraph.__version__) graph = build_graph()
# Instantiate OpenAI LLM if API key is available # Create a simple state with a question
api_key = os.getenv("OPENAI_API_KEY") state = {"question": "What is the capital of France?"}
if api_key:
llm = ChatOpenAI(model="gpt-3.5-turbo") # Run the graph
try: result = graph.invoke(state)
response = llm.invoke("Say hello.")
print("LLM response:", response) # Print the final state
except Exception as e: print("Final state:")
print("Error calling LLM:", e) print(format_state(result))
else:
print("OPENAI_API_KEY not set; skipping LLM call.")
if __name__ == "__main__": if __name__ == "__main__":
main() main()
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// This file has been removed from the project as it contained unrelated JavaScript code.
// It is intentionally left empty to satisfy the requirement that no unrelated JavaScript
// code remains in the repository.
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"""
Utility functions for the LangGraph project.
"""
from langchain_openai import ChatOpenAI
from typing import Dict, Any
def get_llm() -> ChatOpenAI:
"""
Returns a configured OpenAI LLM instance.
"""
# The API key should be set in the environment variable OPENAI_API_KEY
return ChatOpenAI(
temperature=0.7,
model_name="gpt-3.5-turbo",
)
def format_state(state: Dict[str, Any]) -> str:
"""
Formats the state dictionary into a string for display.
"""
return "\n".join(f"{k}: {v}" for k, v in state.items())
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{
"compilerOptions": {
"target": "ES2020",
"module": "CommonJS",
"outDir": "dist",
"strict": true,
"esModuleInterop": true
},
"include": ["src"]
}