Claude 3.7 Sonnet MCP Interface

This project enables powerful, LLM-agnostic interactions with Claude 3.7 Sonnet, either via the Claude Desktop (MCP GUI) or directly through a command-line client using AWS Bedrock and the MCP protocol.

🧭 Options for Usage

You can interact with Claude in two ways:

🖥️ 1. Using Claude Desktop (GUI with MCP Server)

Claude Desktop provides a graphical interface for working with Claude via the MCP protocol. It is ideal for users who want a visual tool experience.

✅ Features

• GUI-based interaction with Claude
• Tool registration and calls via local or remote servers
• Plug-and-play tool development and testing

🚀 Usage

1. Start Claude Desktop

   • Run the application
   • Point it to your local or remote MCP-compatible tool server ( fastmcp install server_name.py )

2. Connect a tool server

   • Claude Desktop uses MCP’s stdio or http transport to connect to tool providers.

3. Start chatting

   • You can test tool calling, observe Claude's responses, and debug tool output.

📦 For more info, visit: https://github.com/ai-sdk/mcp

🧑‍💻 2. Using MCP Client Directly (CLI via Bedrock)

This CLI tool connects to Claude through AWS Bedrock and automatically handles tool calling using the MCP protocol.

✨ Features

• CLI-driven interaction with Claude 3.7 Sonnet
• Automatic tool discovery via MCP
• Tool call execution and response routing
• Rich UI with markdown, syntax highlighting, and spinners
• Lightweight and extensible

📦 Setup

curl -LsSf https://astral.sh/uv/install.sh | sh
git clone https://github.com/your-username/claude-mcp-client.git
cd claude-mcp-client
uv venv .venv
source .venv/bin/activate  # or .venv\Scripts\activate on Windows
uv pip install -r requirements.txt

Create a .env file in the root:

AWS_ACCESS_KEY_ID=your-access-key
AWS_SECRET_ACCESS_KEY=your-secret-key
AWS_REGION=us-east-1
AUTHTOKEN=bltsomething
BRAND_KIT_UID=cssomething

🧠 Model used: us.anthropic.claude-3-7-sonnet-20250219-v1:0

🚀 Running the Client

python client.py ./brand-kit/knowledge-vault/crud.py

Example Tool Server

# tool_server.py
from mcp.server.fastmcp import FastMCP 
server = FastMCP()
@server.tool()
class AddTool(Tool):
    name = "add"
    description = "Adds two numbers"
    input_schema = {"a": "number", "b": "number"}

    async def call(self, input):
        return input["a"] + input["b"]

if __name__ == "__main__":
    server.run()

🧠 Interaction Flow

• The CLI maintains a conversation history (configurable)
• Claude can detect when a tool is needed and call it automatically
• Tool responses are routed back to Claude for follow-up
• Everything is streamed and displayed beautifully in your terminal

💡 Type quit anytime to exit.

🛠 Architecture Overview

Claude (via AWS Bedrock)
        |
      Client.py
        |
    ┌────────────┐
    │ MCP Server │  <── Tool: Python or JS
    └────────────┘

🧹 Cleanup

The client ensures graceful shutdown using AsyncExitStack and aclose() to clean up all sessions.

🖼️ Interface Preview

Here's a quick look at Claude Desktop in action:

🛡 License

MIT License

🙏 Credits

• Anthropic Claude
• AWS Bedrock
• MCP Protocol
• Textualize Rich