caoliao-qrcode-markdown-content

Caoliao QR Code Markdown Content Retrieval

Append the .md suffix to the end of the Caoliao QR code short link to get the Markdown-formatted content of the page.

URL Format

Matching rules:https://{domain}/{segment1}/{segment2}[?query]

• Supported domains:qr61.cn、qr71.cn、qr69.cn、h.qr61.cn
• Path: exactly two segments (e.g., oZwrwZ/q2wR1WE), each segment consisting of alphanumeric characters
• The URL may have query parameters at the end, which do not affect validation

Examples:

• https://qr61.cn/oZwrwZ/q2wR1WE
• https://qr71.cn/oZwrwZ/q2wR1WE
• https://h.qr61.cn/oZwrwZ/q2wR1WE?a=1

Workflow

1. Validate URL — confirm the domain is one of qr61.cn/qr71.cn/qr69.cn/h.qr61.cn , and the path is exactly two non-empty segments.

2. Construct request URL — append .mdto the end of the path (query parameters are kept after .md ):

   https://qr61.cn/oZwrwZ/q2wR1WE       →  https://qr61.cn/oZwrwZ/q2wR1WE.md
   https://h.qr61.cn/oZwrwZ/q2wR1WE?a=1  →  https://h.qr61.cn/oZwrwZ/q2wR1WE.md?a=1
   

3. Use the Shell tool with curl to fetch the content, choosing the corresponding command based on the operating system:

   Windows (PowerShell):

   curl.exe -L -s "https://qr61.cn/oZwrwZ/q2wR1WE.md"
   

   macOS / Linux:

   curl -L -s "https://qr61.cn/oZwrwZ/q2wR1WE.md"
   

   On Windows, you must use curl.exe instead of curl, to avoid PowerShell parsing it as Invoke-WebRequest。

4. Return the fetched Markdown content to the user. If the request fails or returns an error, inform the user of the specific problem.

Notes

• -L The parameter is used to follow redirects.
• -s The parameter is used for silent output, not showing progress information.
• If there is a trailing slash /at the end of the path, remove it first before appending .md。
• If the URL has query parameters (?key=value），.md should be inserted between the path and ? .