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qrcode generator

by 2niuhe
MIT License
1

QR Code Generation MCP Server

A QR code generation MCP server implemented using FastMCP, supporting text-to-QR code conversion with base64 encoding output.

Features

  • Support for any text to QR code conversion (including Chinese characters)
  • Customizable colors and styles
  • Base64 encoding
  • Support for STDIO, HTTP, and SSE transport modes

Installation

uv sync # or pip install qrcode Pillow mcp

Usage

1. MCP Server Mode

Start Server
# STDIO mode (for Claude Desktop) python qrcode_mcp_server.py # HTTP mode python qrcode_mcp_server.py --http --host 127.0.0.1 --port 8008 # SSE mode (Server-Sent Events) Deprecated python qrcode_mcp_server.py --sse --host 127.0.0.1 --port 8008
Configure Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

STDIO Mode (Local Use):

{ "mcpServers": { "qrcode-mcp": { "command": "python", "args": ["/ABSOLUTE/PATH/TO/qrcode_mcp/qrcode_mcp_server.py"], "cwd": "/ABSOLUTE/PATH/TO/qrcode_mcp" } } }

HTTP Mode (Network Deployment):

{ "mcpServers": { "qrcode-mcp": { "transport": "http", "url": "http://127.0.0.1:8008/mcp/" } } }

SSE Mode (Server-Sent Events):

{ "mcpServers": { "qrcode-mcp": { "serverUrl": "http://127.0.0.1:8008/sse" } } }

2. Direct Python API Usage

from qrcode_utils import text_to_qr_base64 # Basic usage base64_result = text_to_qr_base64("Hello, World!") # Custom styling base64_result = text_to_qr_base64( "Custom QR Code", box_size=15, fill_color="darkblue", back_color="lightgray" )

MCP Tools

generate_qr_code

Generate QR code and return base64 encoding.

Parameters:

  • text (required): Text content to convert
  • box_size (optional): Pixel size of each box, default 10
  • border (optional): Number of border boxes, default 4
  • fill_color (optional): Foreground color, default "black"
  • back_color (optional): Background color, default "white"
  • return_data_url (optional): Whether to return Data URL format, default false

Testing

python test_mcp_client.py

License

MIT License

-
security - not tested
A
license - permissive license
-
quality - not tested

mcp tool to generate qrcode

  1. Features
    1. Installation
      1. Usage
        1. MCP Server Mode
        2. Direct Python API Usage
      2. MCP Tools
        1. generate_qr_code
      3. Testing
        1. License

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