seo-ahrefs-broken-links

seo-ahrefs-broken-links is a skill for Claude Code from lionkiii/claude-seo-skills. It costs 67 tokens per session (922 once invoked), scanned C, original, MIT.

A report of broken backlinks found with Ahrefs, an SEO service that analyzes links between websites. It focuses on links that point to pages on your site that now return a missing-page error.

In plain words
What is it for?
Use it to find old or missing pages that still receive links from other websites and prioritize link-reclamation work. The results include the source URL, broken target, link text, authority score, status code, and discovery date.
Why use it?
It shows which valuable incoming links are being wasted because their target pages are gone. Sorting them by the linking site's Domain Rating helps decide which links to reclaim first.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; mentions subagents.

Part of the claude-seo-skills plugin — 51 skills, 6 agents shipped together

Good fit Use it to find old or missing pages that still receive links from other websites and prioritize link-reclamation work. The results include the source URL, broken target, link text, authority score, status code, and discovery date.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links
Install

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.

Any agent
npx skills add lionkiii/claude-seo-skills --skill seo-ahrefs-broken-links
Clone the repo
git clone --depth 1 https://github.com/lionkiii/claude-seo-skills

Made for: Claude Code.

Or install claude-seo-skills, the plugin that ships this one along with the rest of its 51 skills, 6 agents.

Wrote 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.

agentmods badge for seo-ahrefs-broken-links

README.md
[![agentmods](https://agentmods.dev/badge/skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links/github.svg)](https://agentmods.dev/skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links)
Your own site
<a href="https://agentmods.dev/skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links"><img src="https://agentmods.dev/badge/skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links/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.

agentmods 80×15 button for seo-ahrefs-broken-links

Your own site · 80×15
<a href="https://agentmods.dev/skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links"><img src="https://agentmods.dev/badge/skills/lionkiii/claude-seo-skills/seo-ahrefs-broken-links.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 922 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.00922
Opus 5 $0.00034 $0.00461
Sonnet 5 $0.00013 $0.00184
Haiku 4.5 $0.00007 $0.00092

Measured 12d ago against content hash 946cb8e15ab7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade C, and why

seo-ahrefs-broken-links scanned grade C with 2 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 12d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

- Verify with: cat ~/.claude/mcp.json | grep -i ahrefs

Reads MCP configurationmediumAgent snooping

mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.

- Verify with: cat ~/.claude/mcp.json | grep -i ahrefs
skills/seo-ahrefs-broken-links/SKILL.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fetches broken backlinks pointing to a domain (links targeting 404/gone pages), sorted by source Domain Rating to prioritize the highest-value reclamation opportunities.

References

@skills/seo/references/mcp-degradation.md @skills/seo/references/ahrefs-api-reference.md

Inputs

  • domain: The bare domain to analyze (e.g., example.com). Strip https://, http://, and trailing slashes before passing to Ahrefs tools.

MCP Check

Before proceeding, verify Ahrefs MCP is available:

  1. Use ToolSearch with query +ahrefs
  2. If tools are returned → Ahrefs MCP is available, proceed to Execution
  3. If no tools returned → display the Ahrefs MCP error template from references/mcp-degradation.md and stop

Execution

Step 1 — Call Broken Backlinks

Call mcp__claude_ai_ahrefs__site-explorer-broken-backlinks with:

  • target: the bare domain (e.g., example.com)

Returns per broken backlink: url_from, url_to (the 404 target page), anchor, domain_rating_source, http_code, first_seen

Step 2 — Sort by Priority

Sort by domain_rating_source descending — highest-authority broken links first, as reclaiming them delivers the greatest SEO value.

Step 3 — Generate Reclamation Recommendations

For each broken backlink in the top results:

  • Suggest the closest matching live page on the domain to redirect the 404 target
  • If no obvious match exists, recommend contacting the linking site with an updated URL

Output Format

## Ahrefs Broken Backlinks: example.com

### Broken Backlink Summary
| Metric | Value |
|--------|-------|
| Total Broken Backlinks | 87 |
| Unique Linking Domains | 34 |
| High-DR Sources (DR 50+) | 12 |

### Broken Backlinks (sorted by Source DR)

| Linking Page | Linking Page DR | Target Page (404) | Anchor Text | HTTP Code | First Seen |
|-------------|-----------------|-------------------|-------------|-----------|------------|
| news.com/article | 76 | example.com/old-guide | "seo guide" | 404 | 2023-03-12 |
| blog.io/post | 63 | example.com/resources/pdf | "download" | 404 | 2022-11-08 |

### Link Reclamation Opportunities

**1. example.com/old-guide (DR 76 source — news.com/article)**
- Source anchor: "seo guide"
- Action: Redirect `/old-guide` → `/blog/complete-seo-guide` (301 redirect)
- OR: Contact news.com and provide updated URL

**2. example.com/resources/pdf (DR 63 source — blog.io/post)**
- Source anchor: "download"
- Action: Redirect `/resources/pdf` → `/downloads/seo-checklist.pdf` (301 redirect)
- OR: Contact blog.io/post author with updated resource URL

Read the full file on GitHub · 113 lines

Changes

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.

  1. 12d ago First seen · 113 lines · 67 tokens per session scan C 946cb8e15ab7

Subscribe to this mod's changes

seo-ahrefs-broken-links is a skill published in the GitHub repository lionkiii/claude-seo-skills (20 stars, last pushed 3mo ago), licensed MIT. It adds 67 tokens to every session and 922 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (reads agent configuration directories, reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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