https://github.com/jwalsh/mcp-server-qrcode

Model Context Protocol server for generating QR codes
https://github.com/jwalsh/mcp-server-qrcode

anthropic claude mcp mcp-server nodejs qrcode typescript

Last synced: 4 months ago
JSON representation

Model Context Protocol server for generating QR codes

• Host: GitHub
• URL: https://github.com/jwalsh/mcp-server-qrcode
• Owner: jwalsh
• License: mit
• Created: 2025-02-28T13:09:19.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2025-04-29T19:12:00.000Z (7 months ago)
• Last Synced: 2025-07-20T03:39:59.244Z (4 months ago)
• Topics: anthropic, claude, mcp, mcp-server, nodejs, qrcode, typescript
• Language: TypeScript
• Homepage:
• Size: 1.05 MB
• Stars: 3
• Watchers: 1
• Forks: 2
• Open Issues: 10
• Metadata Files:
  • Readme: README.org
  • Changelog: CHANGELOG.org
  • Contributing: CONTRIBUTING.org
  • License: LICENSE
  • Security: SECURITY.org

Awesome Lists containing this project

• awesome-mcp-servers - **mcp-server-qrcode** - Model Context Protocol server for generating QR codes `typescript` `anthropic` `claude` `mcp` `mcp-server` `npm install jwalsh/mcp-server-qrcode` (🤖 AI/ML)
• toolsdk-mcp-registry - ✅ @jwalsh/mcp-server-qrcode

README

          
#+TITLE: MCP QR Code Server

* 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

#+begin_example

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

#+end_example

#+begin_example

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

#+end_example

#+begin_example

Create a QR code for my contact information:

Name: John Doe

Email: john@example.com

Phone: 555-123-4567

#+end_example

* Installation

#+begin_src bash

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

#+end_src

* Usage

** Claude Desktop

#+begin_src json

{

  "mcpServers": {

    "qrcode": {

      "command": "npx",

      "args": [

        "-y",

        "@jwalsh/mcp-server-qrcode"

      ]

    }

  }

}

#+end_src

For detailed setup instructions, please refer to:

- [[https://modelcontextprotocol.io/quickstart/user][MCP for Claude Desktop Users]]

- [[https://modelcontextprotocol.io/quickstart/server][Building MCP Servers]]

- [[https://docs.anthropic.com/en/docs/agents-and-tools/mcp][Anthropic MCP Documentation]]

** Claude Desktop

#+begin_src json

{

  "mcpServers": {

    "qrcode": {

      "args": [

        "-y",

        "@jwalsh/mcp-server-qrcode"

      ],

      "command": "npx"

    }

  }

}

#+end_src

** Emacs with mcp.el

#+begin_src elisp :results silent

;; Basic installation with straight.el

(use-package mcp

  :straight (mcp :type git :host github :repo "lizqwerscott/mcp.el"))

#+end_src

#+begin_src elisp :results silent

;; 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)))

#+end_src

#+begin_src elisp :results raw :wrap example

;; Generate a QR code

(let ((connection (gethash "qrcode" mcp-server-connections)))

  (mcp-call-tool connection 

                "generate-qrcode" 

                '(:content "https://example.com" 

                  :format "text")))

#+end_src

#+RESULTS:

#+begin_example

(:content [(:type text :text QR Code for "https://example.com":

█████████████████████████████████

█████████████████████████████████

████ ▄▄▄▄▄ █▄▀ █ ▀ █▀█ ▄▄▄▄▄ ████

████ █   █ █▄ ▄█▀ ▀█▄█ █   █ ████

████ █▄▄▄█ █▀ █ ▀█ ███ █▄▄▄█ ████

████▄▄▄▄▄▄▄█▄▀▄█ █ ▀ █▄▄▄▄▄▄▄████

████ ▀▄▀▀▀▄▄▀▀    ▄▀▄▀▀ █▀▄▀ ████

████▄▀█▄▀ ▄▄▀   ▀▀█▄▀▄█▀▄ ▄█▄████

█████▀▀▄ ▄▄▄ ▀ █ ▄█  █  ███▀ ████

████▄▄▄█▄▄▄▀▄▀█▀ ▄ ▄  ▄▀▀ ▄█▄████

████▄▄██▄█▄▄▀▄███  █ ▄▄▄ ██▄▀████

████ ▄▄▄▄▄ █▄█▄▄█▀█▀ █▄█ ██▀ ████

████ █   █ ██ █▄ ▄█▄▄ ▄▄ █▀ ▄████

████ █▄▄▄█ █▄ █▀ ▄    ▀  ▄█▄▄████

████▄▄▄▄▄▄▄█▄▄▄██▄▄█▄█▄██▄██▄████

█████████████████████████████████

█████████████████████████████████

)])

#+end_example

** MCP Inspector

#+begin_src bash

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

#+end_src

** NPM Package CLI

#+begin_src bash

# Verify installation

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

#+end_src

#+RESULTS:

: generate-qrcode

#+begin_src bash :results raw  :results raw 

# 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'

#+end_src

#+RESULTS:

QR Code for "https://example.com":

█████████████████████████████████

█████████████████████████████████

████ ▄▄▄▄▄ █▄▀ █ ▀ █▀█ ▄▄▄▄▄ ████

████ █   █ █▄ ▄█▀ ▀█▄█ █   █ ████

████ █▄▄▄█ █▀ █ ▀█ ███ █▄▄▄█ ████

████▄▄▄▄▄▄▄█▄▀▄█ █ ▀ █▄▄▄▄▄▄▄████

████ ▀▄▀▀▀▄▄▀▀    ▄▀▄▀▀ █▀▄▀ ████

████▄▀█▄▀ ▄▄▀   ▀▀█▄▀▄█▀▄ ▄█▄████

█████▀▀▄ ▄▄▄ ▀ █ ▄█  █  ███▀ ████

████▄▄▄█▄▄▄▀▄▀█▀ ▄ ▄  ▄▀▀ ▄█▄████

████▄▄██▄█▄▄▀▄███  █ ▄▄▄ ██▄▀████

████ ▄▄▄▄▄ █▄█▄▄█▀█▀ █▄█ ██▀ ████

████ █   █ ██ █▄ ▄█▄▄ ▄▄ █▀ ▄████

████ █▄▄▄█ █▄ █▀ ▄    ▀  ▄█▄▄████

████▄▄▄▄▄▄▄█▄▄▄██▄▄█▄█▄██▄██▄████

█████████████████████████████████

█████████████████████████████████

* Developer Documentation

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