1naichii/fetch-url-md
skills/fetch-url-md/SKILL.md
Fetch web content with automatic markdown version detection using curl. Use when Claude needs to retrieve documentation from websites that offer both HTML and markdown formats. First checks if a .md version exists (more efficient and cleaner), then falls back to HTML if unavailable. Ideal for fetching documentation from sites like ui.shadcn.com, GitHub wikis, or any documentation site that mirrors content in markdown format.
development
Updated Mar 25, 2026
$ install --global
skillsauthnpx skillsauth add 1naichii/ai-code-tools fetch-url-mdInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
70%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Mar 25, 2026, 5:05 AM182.3s1 file scanned
SKILL.md
- name:
- fetch-url-md
- description:
- Fetch web content with automatic markdown version detection using curl. Use when Claude needs to retrieve documentation from websites that offer both HTML and markdown formats. First checks if a .md version exists (more efficient and cleaner), then falls back to HTML if unavailable. Ideal for fetching documentation from sites like ui.shadcn.com, GitHub wikis, or any documentation site that mirrors content in markdown format.
Fetch URL with Markdown Detection
Overview
Efficiently fetch web content by prioritizing markdown versions when available. Uses curl to check for .md versions first, then falls back to the original URL.
Workflow
Follow these steps sequentially:
1. Parse the original URL
Extract the base URL and path from the user-provided URL.
Example:
- Input:
https://ui.shadcn.com/docs/components/radix/aspect-ratio - Markdown URL:
https://ui.shadcn.com/docs/components/radix/aspect-ratio.md
2. Check for .md version
Use curl with HEAD request to check if .md version exists:
curl -sI "https://ui.shadcn.com/docs/components/radix/aspect-ratio.md" | head -n 1
- 200 OK - Markdown version exists, fetch it
- 404 Not Found - Markdown version doesn't exist, use original URL
- 3xx redirect - Follow the redirect or use original URL
3. Fetch content
If .md exists:
curl -s "https://ui.shadcn.com/docs/components/radix/aspect-ratio.md"
If .md doesn't exist (fallback):
curl -s "https://ui.shadcn.com/docs/components/radix/aspect-ratio"
Decision Tree
User provides URL
│
▼
Construct .md URL (append .md)
│
▼
curl -sI <markdown-url> | head -n 1
│
┌───┴───┐
│ │
200 OK 404/Other
│ │
▼ ▼
Fetch Fetch original
.md HTML URL
Quick Reference
| Check Command | Fetch Command |
|---------------|---------------|
| curl -sI "<url>.md" \| head -n 1 | curl -s "<url>.md" |
| curl -sI "<url>" \| head -n 1 | curl -s "<url>" |
Examples
Example 1: Markdown version available
# Check
curl -sI "https://ui.shadcn.com/docs/components/radix/aspect-ratio.md" | head -n 1
# Output: HTTP/2 200
# Fetch
curl -s "https://ui.shadcn.com/docs/components/radix/aspect-ratio.md"
Example 2: Markdown version not available
# Check
curl -sI "https://example.com/docs/guide.md" | head -n 1
# Output: HTTP/2 404
# Fallback - fetch original
curl -s "https://example.com/docs/guide"
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