QR Code Generator

Generate QR codes for text, URLs, WiFi connections, and business cards (vCard). Use when: (1) creating QR codes for websites or text, (2) generating WiFi con...

Security Scan

This skill's code and instructions match its stated purpose (local QR code generation); it requires only a standard Python package and does not request credentials or perform network exfiltration.

Purpose & Capability

Name/description describe QR code generation and the included script implements text, WiFi, and vCard QR generation only. Required tools (Python qrcode and PIL) are appropriate and proportional to the stated purpose.

Instruction Scope

SKILL.md instructs local generation and saving of PNG files and the script only reads command-line args and writes image files. There are no instructions to read unrelated files, access credentials, or call external endpoints.

Install Mechanism

There is no automated install spec (instruction-only), but SKILL.md asks the user to run `pip3 install qrcode[pil]` (or apt). This is expected for a Python script; installing from PyPI is normal but carries the usual supply-chain risk of third-party packages.

Credentials

The skill requests no environment variables, no credentials, and the script does not access environment secrets or configuration files. All inputs come from CLI arguments.

Persistence & Privilege

always is false and the skill does not modify other skills or system-wide configuration. It does not persist secrets or register itself persistently.

Assessment

This skill appears coherent and limited to generating QR PNGs locally. Before installing or running: (1) be aware you will be asked to install the qrcode/Pillow package from PyPI (standard but subject to normal supply-chain risks) — consider reviewing the package or using a virtualenv; (2) generated WiFi QR codes embed plaintext SSIDs/passwords — avoid creating/sharing QR codes that expose sensitive network credentials; (3) the script saves to disk (defaults to ~/qrcode_output.png) and may overwrite files if you reuse the same path; (4) if you need higher assurance, inspect the included scripts (already provided) and run them in an isolated environment. Overall the skill is internally consistent and does what it claims.

Generate QR codes locally for various use cases. No API calls required - everything is generated on your machine.

When to Use

• Share URLs quickly via QR codes
• Create WiFi connection codes for guests
• Generate digital business cards (vCard)
• Encode any text data into QR format

Prerequisites

Install the required Python package:

pip3 install qrcode[pil]
# or on Ubuntu/Debian:
sudo apt-get install python3-qrcode

Quick Start

Generate URL QR Code

python3 scripts/qr-code.py text "https://example.com"
# Output: QR code saved to ~/qrcode_output.png

Generate WiFi QR Code

python3 scripts/qr-code.py wifi "MyNetwork" "myPassword"
# Scan with phone to auto-connect

Generate Business Card

python3 scripts/qr-code.py vcard --name "John Doe" --phone "[phone]" --email "[e-mail]"

Commands

text <content> [output_path]

Generate a QR code containing any text or URL.

Parameters:

• content: The text or URL to encode
• output_path: Optional. Where to save the PNG file. Defaults to ~/qrcode_output.png

Examples:

# Basic URL
python3 scripts/qr-code.py text "https://github.com"

# Custom output location
python3 scripts/qr-code.py text "Hello World" ./hello_qr.png

# Long URL (auto-fits to QR version)
python3 scripts/qr-code.py text "https://example.com/very/long/path?with=parameters"

wifi <ssid> <password> [output_path]

Generate a QR code that allows phones to connect to WiFi automatically.

Parameters:

• ssid: WiFi network name
• password: WiFi password
• output_path: Optional output path

Supported phones:

• iOS 11+ (Camera app)
• Android 9+ (Camera or WiFi settings)
• Most QR scanner apps

Example:

python3 scripts/qr-code.py wifi "HomeWiFi" "secretPass123" ~/wifi_qr.png

vcard --name <name> [options] [output_path]

Generate a vCard (digital business card) QR code.

Options:

• --name, -n (required): Full name
• --phone, -p: Phone number
• --email, -e: Email address
• --org, -o: Organization/Company
• --title, -t: Job title
• --url, -u: Website URL
• output: Optional output path

Examples:

# Simple card
python3 scripts/qr-code.py vcard --name "张三"

# Full business card
python3 scripts/qr-code.py vcard \
  --name "John Smith" \
  --phone "[phone]" \
  --email "[e-mail]" \
  --org "Acme Corp" \
  --title "Senior Developer" \
  --url "https://johnsmith.dev" \
  ~/business_card.png

Tips

• QR codes use high error correction - they still work even if partially obscured
• For large amounts of text, the QR code will automatically use a larger version
• Generated files are standard PNG images that can be printed or shared digitally
• WiFi QR codes follow the universal WIFI: format standard

Troubleshooting

"Missing qrcode module" error:

pip3 install qrcode[pil]

Permission denied when saving:

• Check that the output directory exists
• Ensure you have write permissions

Output

All generated QR codes are saved as PNG images. The output path will be displayed after successful generation.