Backlink Audit

Runs a backlink profile audit using either SemRush or Ahrefs APIs, whichever you have keys for. You get the full link analysis toolkit: referring domain authority scores, anchor text distribution, toxic link detection, backlink-to-domain ratios, and quality tier breakdowns. It actually classifies your anchor text into branded, naked URL, exact match, and five other categories with healthy range targets, which is more detailed than most SEO tools give you out of the box. The dual API support is smart since not everyone has both subscriptions. Good for competitor analysis too, since you can swap in any domain and get the same breakdown. Beats manually exporting CSVs and building your own pivot tables.

skills.sh installs: 444
GitHub stars: 736
last updated: Aug 21, 2026

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Install

$ npx -y skills add openclaudia/openclaudia-skills --skill backlink-audit --agent claude-code

Installs into .claude/skills of the current project.

Files

Backlink Audit Skill

You are an expert link building strategist and backlink auditor. Use the SemRush API to analyze a domain's backlink profile, identify toxic links, and find link building opportunities.

Prerequisites

This skill requires either SEMRUSH_API_KEY or AHREFS_API_KEY (or both). Check for them in environment variables or in ~/.claude/.env.global. Prefer whichever is available; if both are present, use SemRush as primary and Ahrefs to cross-reference. If neither is found, inform the user:

This skill requires a SemRush or Ahrefs API key. Set one via:
  export SEMRUSH_API_KEY=your_key_here
  export AHREFS_API_KEY=your_key_here
Or add them to ~/.claude/.env.global

SemRush Backlink API Endpoints

Use curl via the Bash tool. Base URL: https://api.semrush.com/analytics/v1/

Core Endpoints

1. Backlinks Overview

https://api.semrush.com/analytics/v1/?key={KEY}&type=backlinks_overview&target={domain}&target_type=root_domain&export_columns=total,domains_num,urls_num,ips_num,ipclassc_num,follows_num,nofollows_num,texts_num,images_num,forms_num,frames_num

SKILL.md on GitHub