--- 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" --- # 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](../../cross-cutting/domain-authority-auditor/SKILL.md) when toxicity or authority concerns need formal scoring. ### Handoff Summary > Emit the standard shape from [skill-contract.md §Handoff Summary Format](../../references/skill-contract.md). ## Data Sources All integrations optional (see [CONNECTORS.md](../../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](../../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](references/analysis-templates.md) 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 See [Analysis Templates](references/analysis-templates.md) for the full output structure (link-intersection table, opportunities, and impact model). ## Link Quality and Strategy Reference > **Reference**: See [Link Quality Rubric](references/link-quality-rubric.md) for the scoring matrix, toxic-link criteria, benchmarks, and disavow guidance. > **Reference**: See [Outreach Templates](references/outreach-templates.md) 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](../../references/skill-contract.md) §Save Results Template. If toxic ratio exceeds 15%, recommend `domain-authority-auditor`. ## Reference Materials - [Link Quality Rubric](references/link-quality-rubric.md) — Quality and toxicity rubric - [Outreach Templates](references/outreach-templates.md) — Outreach frameworks and examples ## Next Best Skill Toxic ratio > 15% → [domain-authority-auditor](../../cross-cutting/domain-authority-auditor/SKILL.md). Otherwise → Terminal. Visited-set rule applies per [skill-contract.md](../../references/skill-contract.md).