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A simple CLI chatbot that demonstrates the integration of the Model Context Protocol (MCP).
| Date | Stars |
|---|---|
| 2026-07-31 | 250 |
| 2026-08-05 | 250 |
| 2026-08-06 | 250 |
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# MCP Chatbot
This chatbot example demonstrates how to integrate the Model Context Protocol (MCP) into a simple CLI chatbot. The implementation showcases MCP's flexibility by supporting multiple tools through MCP servers and is compatible with any LLM provider that follows OpenAI API standards.
If you find this project helpful, don’t forget to ⭐ star the [repository](https://github.com/3choff/mcp-chatbot) or buy me a ☕ [coffee](https://ko-fi.com/3choff).
## Key Features
- **LLM Provider Flexibility**: Works with any LLM that follows OpenAI API standards (tested with Llama 3.2 90b on Groq and GPT-4o mini on GitHub Marketplace).
- **Dynamic Tool Integration**: Tools are declared in the system prompt, ensuring maximum compatibility across different LLMs.
- **Server Configuration**: Supports multiple MCP servers through a simple JSON configuration file like the Claude Desktop App.
## Requirements
- Python 3.10
- `python-dotenv`
- `requests`
- `mcp`
- `uvicorn`
## Installation
1. **Clone the repository:**
```bash
git clone https://github.com/3choff/mcp-chatbot.git
cd mcp-chatbot
```
2. **Install the dependencies:**
```bash
pip install -r requirements.txt
```
3. **Set up environment variables:**
Create a `.env` file in the root directory and add your API key:
```plaintext
LLM_API_KEY=your_api_key_here
```
4. **Configure servers:**
The `servers_config.json` follows the same structure as Claude Desktop, allowing for easy integration of multiple servers.
Here's an example:
```json
{
"mcpServers": {
"sqlite": {
"command": "uvx",
"args": ["mcp-server-sqlite", "--db-path", "./test.db"]
},
"puppeteer": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-puppeteer"]
}
}
}
```
Environment variables are supported as well. Pass them as you would with the Claude Desktop App.
Example:
```json
{
"mcpServers": {
"server_name": {
"command": "uvx",
"args": ["mcp-server-name", "--additional-args"],
"env": {
"API_KEY": "your_api_key_here"
}
}
}
}
```
## Usage
1. **Run the client:**
```bash
python main.py
```
2. **Interact with the assistant:**
The assistant will automatically detect available tools and can respond to queries based on the tools provided by the configured servers.
3. **Exit the session:**
Type `quit` or `exit` to end the session.
## Architecture
- **Tool Discovery**: Tools are automatically discovered from configured servers.
- **System Prompt**: Tools are dynamically included in the system prompt, allowing the LLM to understand available capabilities.
- **Server Integration**: Supports any MCP-compatible server, tested with various server implementations including Uvicorn and Node.js.
### Class Structure
- **Configuration**: Manages environment variables and server configurations
- **Server**: Handles MCP server initialization, tool discovery, and execution
- **Tool**: Represents individual tools with their properties and formatting
- **LLMClient**: Manages communication with the LLM provider
- **ChatSession**: Orchestrates the interaction between user, LLM, and tools
### Logic Flow
```mermaid
flowchart TD
A[Start] --> B[Load Configuration]
B --> C[Initialize Servers]
C --> D[Discover Tools]
D --> E[Format Tools for LLM]
E --> F[Wait for User Input]
F --> G{User Input}
G --> H[Send Input to LLM]
H --> I{LLM Decision}
I -->|Tool Call| J[Execute Tool]
I -->|Direct Response| K[Return Response to User]
J --> L[Return Tool Result]
L --> M[Send Result to LLM]
M --> N[LLM Interprets Result]
N --> O[Present Final Response to User]
K --> O
O --> F
```
1. **Initialization**:
- Configuration loads environment variables and server settings
- Servers are initialized with their respective toolsExcerpt of 5,084 characters
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matched fp:63dfa65665f8500d, name:chatbot, desc:chatbot