backlink-analyzer

name	backlink-analyzer
description	Use when the user asks to "analyze backlinks" or "外链分析"; profiles external referring domains, anchor-text distribution, toxic links, and competitor link gaps. Not for internal links — use internal-linking-optimizer. 外链分析/反向链接
version	9.9.10
license	Apache-2.0
compatibility	Claude Code and compatible agent-skill hosts
homepage	https://github.com/aaron-he-zhu/seo-geo-claude-skills
when_to_use	Use when analyzing backlink profiles, link quality, toxic links, referring domains, or anchor text distribution.
argument-hint	<domain or URL>
allowed-tools	WebFetch
metadata	{"author":"aaron-he-zhu","version":"9.9.10","geo-relevance":"low","tags":["seo","backlinks","link-building","link-profile","toxic-links","off-page-seo","link-audit","referring-domains","disavow","ahrefs-alternative","外链分析","被リンク","백링크","backlinks-seo"],"triggers":["check link profile","find toxic links","link building opportunities","referring domains","who links to me","I have spammy links","competitor link gap","disavow links","谁链接到我","有垃圾外链"]}

Backlink Analyzer

Analyzes backlink profiles for quality, risk, competitive gaps, and link-building opportunities.

Quick Start

Analyze backlink profile for [domain]

Find link building opportunities by analyzing [competitor domains]

Skill Contract

Expected output: a backlink report or delta summary plus the standard handoff summary for memory/monitoring/.

• Reads: target domain, backlink/referring-domain exports, competitor domains, anchor data, and any user-provided or tool metrics.
• Writes: a user-facing monitoring deliverable and reusable summary.
• Promotes: significant changes, confirmed anomalies, follow-up actions, and pending decisions to memory/open-loops.md.
• Done when: referring domains, anchor mix, and toxic-link share are reported with each metric source-tagged (or N/A); toxic ratio is computed; and at least 3 link-building or disavow actions are named.
• Primary next skill: domain-authority-auditor when toxicity or authority concerns need formal scoring.

Handoff Summary

Emit the standard shape from skill-contract.md §Handoff Summary Format.

Data Sources

All integrations optional (see CONNECTORS.md). With tools, pull backlink profiles from ~~link database and competitor data from ~~SEO tool. Without tools, ask for backlink CSVs, referring domains, competitor domains, and link changes. Respect robots.txt and TOS per SECURITY.md.

Decision Gates

Stop and ask the user when:

• No backlink data is provided and no ~~link database is connected — link counts cannot be measured. Offer: (1) paste a backlink/referring-domain export, (2) connect a tool, (3) cancel. Do not estimate referring-domain volume from the domain alone.

Continue silently (never stop for):

• Which of several competitors to deep-dive — analyze the top 3 by overlap and note the rest.
• Missing optional fields (geography, link velocity) — mark N/A and proceed.

Instructions

When a user requests backlink analysis:

1. Generate Profile Overview — output key metrics, link velocity, authority distribution, and profile health score, with each metric carrying its source tag (tool export / user-provided / estimated).
2. Analyze Link Quality — top backlinks, link type mix, anchor text distribution, and geography.
3. Identify Toxic Links — risk indicators, links to review, and disavow recommendations; report the toxic ratio as a labeled figure.
4. Compare Against Competitors — profile comparison, link intersection, and top linked competitor content.
5. Find Link Building Opportunities — intersection prospects, broken links, unlinked mentions, resource pages, guest posts, and effort-vs-impact priorities.
6. Track Link Changes — new and lost links, net change, and recovery priorities, each delta labeled against its baseline.
7. Generate Backlink Report — executive summary, strengths, concerns, opportunities, competitive position, recommended actions, and KPIs, with every figure source-tagged.

Label every metric Measured (tool/export), User-provided, or Estimated (model inference); never present an estimate as measured; if a required metric is unavailable, mark it N/A — do not invent it.

Reference: See Analysis Templates for the compact output templates used in all seven steps.

CITE Item Mapping

When running domain-authority-auditor after this analysis, the following data feeds directly into CITE scoring:

Backlink Metric	CITE Item	Dimension
Referring domains count	C01 (Referring Domain Volume)	Citation
Authority distribution (DA breakdown)	C02 (Referring Domains Quality)	Citation
Link velocity	C04 (Link Velocity)	Citation
Geographic distribution	C10 (Link Source Diversity)	Citation
Dofollow/Nofollow ratio	T02 (Dofollow Ratio Normality)	Trust
Toxic link analysis	T01 (Link Profile Naturalness), T03 (Link-Traffic Coherence)	Trust
Competitive link intersection	T05 (Profile Uniqueness)	Trust

Example

Sample outcome: a link-intersection table, top immediate opportunities, and an estimated impact model. Keep the full structure in Analysis Templates.

Tips for Success

Prioritize quality, monitor regularly, diversify anchors and link types, and disavow cautiously.

Link Quality and Strategy Reference

Reference: See Link Quality Rubric for the scoring matrix, toxic-link criteria, benchmarks, and disavow guidance.

Reference: See Outreach Templates for outreach frameworks, subject lines, response benchmarks, follow-up sequences, and templates.

Save Results

Ask "Save these results?" If yes, write to memory/monitoring/ — see Skill Contract §Save Results Template. If toxic ratio exceeds 15%, recommend domain-authority-auditor.

Reference Materials

• Link Quality Rubric — Quality and toxicity rubric
• Outreach Templates — Outreach frameworks and examples

Next Best Skill

Toxic ratio > 15% → domain-authority-auditor. Otherwise → Terminal. Visited-set rule applies per skill-contract.md.