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@jwalsh/mcp-server-qrcode

Model Context Protocol server for generating QR codes

1.1.0
latest
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npm
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11
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Overview

Generate QR codes seamlessly using the Model Context Protocol (MCP). This server connects large language models to QR code generation capabilities across multiple client interfaces.

Features

  • Generate QR codes for multiple content types:
    • URLs and website links
    • WiFi network credentials
    • Contact information (vCard)
    • Plain text
    • Calendar events (iCal)
  • Multiple output formats:
    • PNG images (base64-encoded)
    • ASCII/text representation
    • Data URL format
  • Customization options:
    • Size adjustment (100-1000px)
    • Error correction levels (L, M, Q, H)
    • Format selection (image, text)

Quick Examples

Please generate a QR code for https://example.com

Generate a QR code for the Wi-Fi network "GuestWiFi" with password "Welcome123"

Create a QR code for my contact information:
Name: John Doe
Email: john@example.com
Phone: 555-123-4567

Installation

npm install -g @jwalsh/mcp-server-qrcode

Usage

Claude Desktop

{
  "mcpServers": {
    "qrcode": {
      "command": "npx",
      "args": [
        "-y",
        "@jwalsh/mcp-server-qrcode"
      ]
    }
  }
}

For detailed setup instructions, please refer to:

  • MCP for Claude Desktop Users
  • Building MCP Servers
  • Anthropic MCP Documentation

Claude Desktop

{
  "mcpServers": {
    "qrcode": {
      "args": [
        "-y",
        "@jwalsh/mcp-server-qrcode"
      ],
      "command": "npx"
    }
  }
}

Emacs with mcp.el

;; Basic installation with straight.el
(use-package mcp
  :straight (mcp :type git :host github :repo "lizqwerscott/mcp.el"))

;; Connect to the QR code server
(mcp-connect-server
 "qrcode" 
 "npx" 
 '("-y" "@jwalsh/mcp-server-qrcode")
 :initial-callback
 (lambda (connection)
   (message "Connected to %s" (jsonrpc-name connection)))
 :tools-callback
 (lambda (connection tools)
   (message "Available tools: %s" tools)))

;; Generate a QR code
(let ((connection (gethash "qrcode" mcp-server-connections)))
  (mcp-call-tool connection 
                "generate-qrcode" 
                '(:content "https://example.com" 
                  :format "text")))

MCP Inspector

npx -y @modelcontextprotocol/inspector npx -y @jwalsh/mcp-server-qrcode

NPM Package CLI

# Verify installation
echo '{"method":"tools/list","params":{},"id":1,"jsonrpc":"2.0"}' | mcp-server-qrcode | jq -r '.result.tools[]|.name'

# Generate QR code via JSON-RPC
echo '{"method":"tools/call","params":{"name":"generate-qrcode","arguments":{"content":"https://example.com","format":"text"}},"id":1,"jsonrpc":"2.0"}' | mcp-server-qrcode |  jq -r '.result.content[0].text'

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Developer Documentation

For detailed setup, installation, contribution guidelines, and additional integration methods, please refer to DEVELOPERS.org.

Keywords

mcp
qrcode
ai
model-context-protocol

FAQs

Package last updated on 03 Mar 2025

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