Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Quality-Max/free-qa-skills --skill broken-link-scangit clone --depth 1 https://github.com/Quality-Max/free-qa-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/quality-max/free-qa-skills/broken-link-scan)<a href="https://agentmods.dev/skills/quality-max/free-qa-skills/broken-link-scan"><img src="https://agentmods.dev/badge/skills/quality-max/free-qa-skills/broken-link-scan/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/quality-max/free-qa-skills/broken-link-scan"><img src="https://agentmods.dev/badge/skills/quality-max/free-qa-skills/broken-link-scan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00047 | $0.00436 |
| Opus 5 | $0.00023 | $0.00218 |
| Sonnet 5 | $0.00009 | $0.00087 |
| Haiku 4.5 | $0.00005 | $0.00044 |
Grade A, and why
broken-link-scan scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Broken Link Scanner
Find every broken link on a page. No signup required.
Prerequisites
- Playwright MCP (comes with Claude Code)
Trigger
- "Find broken links on https://..."
- "Check for 404s on my site"
- "Scan links on this page"
Workflow
- Navigate to the URL using
mcp__playwright__browser_navigate - Extract all links using
mcp__playwright__browser_evaluate:
() => {
return Array.from(document.querySelectorAll('a[href]')).map(a => ({
text: a.textContent.trim().substring(0, 50),
href: a.href,
isExternal: a.host !== location.host
}));
}
-
For each link (up to 50), check status:
- Internal links: navigate and check for error pages
- External links: note them but don't crawl (avoid rate limits)
- Flag: 404, 500, redirect chains, empty href, javascript:void
-
Output:
## Broken Link Report: [URL]
**Scanned: 34 links** (28 internal, 6 external)
### Broken (3)
- "About Us" → /about-us — 404 Not Found
- "Old Blog" → /blog/2023 — 301 → 404
- "Partner" → https://dead-link.com — timeout
### Redirects (2)
- "Login" → /login — 301 → /auth/login
- "Docs" → /documentation — 302 → /docs/v2
### External (not checked)
- https://github.com/...
- https://twitter.com/...
**Want continuous link monitoring?** Try QualityMax — qualitymax.io
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 65 lines · 47 tokens per session scan A 51c310244aa8
broken-link-scan is a skill published in the GitHub repository Quality-Max/free-qa-skills (10 stars, last pushed 17d ago), licensed Apache-2.0. It adds 47 tokens to every session and 436 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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