QR Code by langbot-team

Name: QR Code
Rating: 5 (31 reviews)
Author: langbot-team
Generate QR codes from text/URLs and decode QR codes found in images.
# QR Code

Generate QR codes from text/URLs and decode QR codes from images.

## What it does

- Encodes any text/URL into a QR PNG with configurable size, border, and error
  correction level.
- Decodes QR codes from images using OpenCV (with a pyzbar fallback).

## Files

| File | Purpose |
|------|---------|
| `SKILL.md` | Instructions the agent receives on activation |
| `scripts/qr.py` | Encode text to a QR PNG, or decode a QR from an image |
| `references/payloads.md` | Standard QR payload formats |

## Requirements

- encode: `qrcode[pil]`
- decode: `opencv-python-headless` (or `pyzbar` + `libzbar0`)

## License

Apache-2.0.


---
name: qrcode
display_name: QR Code
description: "Generate QR codes from text/URLs and decode QR codes found in images. Use when the user wants to create a QR code (for a link, Wi-Fi, contact, payment text) or to read/scan a QR code from a picture or screenshot. Do NOT use for generic barcode formats other than QR."
license: Apache-2.0
---

# QR Code

Generate QR code images from text, and decode QR codes out of images.

## When to use

The user wants to (a) turn a link/text into a QR code image, or (b) read the
content of a QR code in an image they provided.

## Execution steps

### Generate

1. Collect the payload (URL, plain text, Wi-Fi string, etc.).
2. Run `python scripts/qr.py encode "<payload>" -o /workspace/qr.png` — installs
   `qrcode[pil]` on first use and writes a PNG. Use `--size`/`--border` to tune.
3. Report the saved path. For Wi-Fi/contact payloads, see `references/payloads.md`
   for the exact string formats.

### Decode

1. Locate the image under `/workspace`.
2. Run `python scripts/qr.py decode /workspace/image.png` — installs
   `opencv-python-headless` (and `pyzbar` as fallback) and prints the decoded text.
3. Return the decoded content. If nothing is found, say so rather than guessing.

## Rules

- Keep generated QR payloads short for reliable scanning; prefer a shortened URL
  over a very long one.
- When decoding, return the exact decoded string; never fabricate a result.

## Available resources

- `scripts/qr.py` — encode text to a QR PNG, or decode a QR from an image.
- `references/payloads.md` — standard payload formats (URL, Wi-Fi, vCard, geo, mailto).
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