# Self‑Correcting Agent Demo

This repository demonstrates a minimal Node.js project that uses the **langchain-openai** and **langchain-core** packages to create a simple LLM provider. The goal is to satisfy the requirement of adding these packages and configuring the LLM provider accordingly.

## Prerequisites

- Node.js v18 or newer
- An OpenAI API key

## Setup

1. **Clone the repository** (or download the files):

   ```bash
   git clone https://git.brojs.ru/kuzakhmetovartur/ekzamen-samokorrektiruyuschiysya-agent.git
   cd ekzamen-samokorrektiruyuschiysya-agent
   ```

2. **Install dependencies**:

   ```bash
   npm install
   ```

3. **Set the OpenAI API key**:

   ```bash
   export OPENAI_API_KEY=your_api_key_here
   ```

   On Windows PowerShell:

   ```powershell
   $env:OPENAI_API_KEY="your_api_key_here"
   ```

## Running the Demo

```bash
npm start
```

You should see output similar to:

```
LLM response: The capital of France is Paris.
```

## Project Structure

- `package.json` – Project metadata and dependencies (`langchain-openai` & `langchain-core`).
- `src/index.js` – Main entry point that imports the LLM provider, verifies its type, and sends a prompt.
- `README.md` – Documentation.

## Notes

- No additional external packages are used beyond the required `langchain-openai` and `langchain-core`.
- The code uses ES modules (`"type": "module"` in `package.json`).
- The LLM instance is verified to be an instance of `BaseLLM` from `langchain-core` to satisfy the configuration requirement.

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