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Ahrefs SEO Analyzer

By Infrasity-Labs· Infrasity-Labs/dev-gtm-claude-skills· 0

Analyze backlinks, organic keywords, and domain authority using Ahrefs API data.

Installation

  1. Make sure Claude is on your device and in your terminal.

    Skills load from ~/.claude/skills/ when Claude Code starts up — so you need it on your machine first. If you don't have it yet, install it once with the command below, then run claude in any terminal to verify.

    One-time setup
    npm i -g @anthropic-ai/claude-code

    Already have it? Skip ahead.

  2. Paste into Claude Code or into your terminal.
    Install
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    This copies the whole skill folder into ~/.claude/skills/seo-ahrefs-infrasity-labs/ — the SKILL.md plus any scripts, reference docs, or templates the skill ships with. Safe default: works for every skill.

    Faster alternative (instruction-only skills)

    Skips the clone and grabs only the SKILL.md file. Don't use this if the skill ships Python scripts, reference markdowns, or asset templates — they won't be downloaded and the skill will fail when it tries to load them.

    Quick install (SKILL.md only)
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  3. Restart Claude Code.

    Quit and reopen Claude Code (or any other agent that loads from ~/.claude/skills/). New skills are picked up on startup.

  4. Just ask Claude.

    Skills auto-activate when your request matches the skill's description — no slash command needed. Trigger phrases live in the skill's own frontmatter; you can read them in the “What this skill does” section above.

Prefer to read the source first? Open on GitHub.

When Claude uses it

Ahrefs API analyst (extension). Reads referring domains, backlinks, organic keywords, and content explorer data via the official @ahrefs/mcp server. Pairs with seo-backlinks for multi-source confidence weighting.

What this skill does

seo-ahrefs

Live Ahrefs data via the official @ahrefs/mcp server.

Prerequisites

  • Run extensions/ahrefs/install.sh (Linux/macOS) or install.ps1 (Windows) before using this skill.
  • An Ahrefs API token (https://ahrefs.com/api).
  • Node 18+ on $PATH for the MCP server.

Before calling any Ahrefs tool, verify the MCP is connected by checking that any Ahrefs MCP tool is available in this session. If tools are not available, tell the user the extension is not installed and provide the install command above.

Routing

CommandAction
/seo ahrefs metrics <url>Domain / URL rating, referring domain count, organic traffic estimate
/seo ahrefs backlinks <url>Top referring domains, anchor distribution, follow/nofollow ratio
/seo ahrefs organic <url>Organic keywords, ranking distribution, traffic by country
/seo ahrefs content <topic>Content Explorer top results, social shares, referring domains

Output conventions

  • Cite the data source on every metric: "Ahrefs (live, confidence 1.00)".
  • When Ahrefs and Moz disagree on the same metric, trust Ahrefs and note the discrepancy in the report.
  • Toxic link assessment: combine Ahrefs Spam Score with the existing seo-backlinks Common Crawl + verify crawler signals.

Cross-skill delegation

  • For multi-source confidence weighting across Moz + Bing + Common Crawl + Ahrefs, hand back to seo-backlinks.
  • For SERP-feature analysis where Ahrefs and DataForSEO overlap, prefer DataForSEO for live SERP data.

Cost guardrails

Ahrefs API usage is metered per unit. Before running a batch (>= 50 URLs):

  1. Estimate cost with python scripts/dataforseo_costs.py (the cost-tracker module is generic and supports Ahrefs unit accounting).
  2. Surface the estimate to the orchestrator.
  3. Log actual cost after each call.

This is the same workflow the seo-dataforseo skill uses.

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