mcpField
F
fetching-blocked-urls

fetching-blocked-urls

github.com/oaustegardProductivity15770 installsUpdated 1d ago
Repository

About fetching-blocked-urls

A skill for retrieving readable Markdown from URLs that web_fetch cannot access, aimed at AI workflows in restricted network environments. It uses Jina AI's reader endpoint as a fallback and retries transient failures.

Key features

  1. 01Fetch pages through Jina AI reader
  2. 02Retry transient upstream errors
  3. 03Preserve page links in Markdown
  4. 04Document access limitations

Use cases

  1. 01Recover content after web_fetch returns 403
  2. 02Read JavaScript-heavy or garbled pages
  3. 03Retry when the reader service fails

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/oaustegard/claude-skills --skill fetching-blocked-urls

After installing, type/fetching-blocked-urlsin Claude Code to confirm it loaded.

Bundled filesCHANGELOG.mdREADME.md

Details

From the project README

Fetching Blocked URLs

Retrieve readable content from URLs that web_fetch cannot access. Jina AI's reader service renders JavaScript, bypasses soft blocks, and returns clean markdown.

Activation Triggers

Invoke this skill immediately when web_fetch returns:

  • 403 Forbidden or access denied
  • Paywall or login wall indicators
  • Empty, garbled, or truncated content
  • JavaScript-heavy SPA failures
  • Timeout errors

Core Command

curl -s --max-time 30 "https://r.jina.ai/TARGET_URL"

The service returns markdown with page title, body text, and preserved links.

Retry Pattern

Jina's backend has ~10% intermittent failures. Use retry logic to achieve 99%+ success:

for attempt in 1 2 3; do
  result=$(curl -s --max-time 30 "https://r.jina.ai/TARGET_URL" 2>&1)
  echo "$result" | grep -q "upstream connect error" || { echo "$result"; break; }
  [ $attempt -lt 3 ] && sleep 1
done

Workflow Integration

  1. Primary: Use web_fetch (native tool)
  2. Fallback: This skill with retry when web_fetch fails
  3. Escalate: Request user assistance only after retry exhaustion

Attempt this fallback before asking users to copy-paste content manually.

Output Format

Jina returns structured markdown:

  • Title: page title
  • URL Source: original URL
  • Markdown Content: extracted body text, links preserved

Limitations

  • Long pages may truncate
  • Sites blocking all scrapers remain inaccessible
  • Login-required content limited to public portions
  • Real-time dynamic content may not render

Domain Access

r.jina.ai is whitelisted in Claude container network configuration.

Comments

Markdown supported