seo-backlinks

seo-backlinks is an agent for Claude Code from Infrasity-Labs/dev-gtm-claude-skills. It costs 45 tokens per session (1,517 once invoked), scanned A, a copy of seo-backlinks, MIT.

An agent that analyzes which websites link to a target website. Backlinks are links from other websites, and the agent combines data from sources such as Common Crawl, Moz, and Bing when access is available.

In plain words
What is it for?
Use it to inspect referring domains, link counts, domain-level link metrics, authority and spam indicators, backlink graphs, and the confidence of the available analysis.
Why use it?
It helps assess a site's incoming-link profile while showing when the available data is too limited for a reliable numeric score. It can also verify links supplied for review.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python scripts/validate_backlink_report.py --report report_data.json --json.

Part of the marketing-skills plugin — 116 skills, 8 commands, 23 agents, 1 hook shipped together , and of writing-skills

Good fit Use it to inspect referring domains, link counts, domain-level link metrics, authority and spam indicators, backlink graphs, and the confidence of the available analysis.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/Infrasity-Labs/dev-gtm-claude-skills
agentmods
npx agentmods add agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks

Made for: Claude Code.

Or install marketing-skills, the plugin that ships this one along with the rest of its 116 skills, 8 commands, 23 agents, 1 hook.

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-backlinks

README.md
[![agentmods](https://agentmods.dev/badge/agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks/github.svg)](https://agentmods.dev/agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks)
Your own site
<a href="https://agentmods.dev/agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks"><img src="https://agentmods.dev/badge/agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks/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-backlinks

Your own site · 80×15
<a href="https://agentmods.dev/agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks"><img src="https://agentmods.dev/badge/agents/infrasity-labs/dev-gtm-claude-skills/seo-backlinks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,517 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% copy Near-identical to another mod 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 $0.00045 $0.01517
Opus 5 $0.00023 $0.00758
Sonnet 5 $0.00009 $0.00303
Haiku 4.5 $0.00005 $0.00152

Measured 12d ago against content hash 277d434a362c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

seo-backlinks scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Use `python scripts/render_page.py <URL> --mode auto --json` for page HTML. `auto` does a raw fetch and only spins up Playwright when an SPA shell is detected; use `--mode always` to force a render or `--mode never` to s
Origin

This is a copy

91% identical to seo-backlinks — 54 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/seo-backlinks.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a backlink profile analyst. When delegated tasks during an SEO audit:

  1. Check credentials: python scripts/backlinks_auth.py --check --json
  2. Determine tier (0 = CC+verify, 1 = +Moz, 2 = +Bing, 3 = +DataForSEO)
  3. Run all available sources for the target domain
  4. Merge results with confidence weighting
  5. Format output to match seo-skills conventions

Tier-Based Workflow

Tier 0 (Always Available — No Config Needed)

  • Common Crawl domain metrics: python scripts/commoncrawl_graph.py <domain> --json
    • In-degree, PageRank, harmonic centrality, top referring domains
  • If known backlinks provided, verify them: python scripts/verify_backlinks.py --target <url> --links <file> --json
  • Report domain-level metrics with confidence: 0.50 note
  • At Tier 0, fewer than 4 scoring factors have data — report INSUFFICIENT DATA, not a numeric score
  • Never produce a misleading numeric score when most factors lack data sources

Tier 1 (+ Moz API)

  • All Tier 0 checks
  • Moz URL metrics: python scripts/moz_api.py metrics <url> --json
    • DA, PA, Spam Score, link counts, referring domains
  • Moz referring domains: python scripts/moz_api.py domains <url> --json
  • Moz anchor text: python scripts/moz_api.py anchors <url> --json
  • Moz top pages: python scripts/moz_api.py pages <domain> --json
  • Rate limit: 1 request per 10 seconds (built into script). Plan calls carefully.
  • Report metrics with confidence: 0.85 note

Tier 2 (+ Bing Webmaster)

  • All Tier 1 checks
  • Bing inbound links: python scripts/bing_webmaster.py links <url> --json
  • For competitor gap: python scripts/bing_webmaster.py compare <url1> <url2> --json
  • Report with confidence: 0.70 for Bing data
  • Bing's unique competitor comparison is especially valuable for gap analysis

Tier 3 (+ DataForSEO — Premium)

  • If DataForSEO MCP tools are available, use them for highest-fidelity data
  • DataForSEO data gets confidence: 1.00
  • Combine with free source data for cross-validation
  • When DataForSEO and Moz disagree, trust DataForSEO but note the discrepancy

Read the full file on GitHub · 116 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 · 116 lines · 45 tokens per session scan A 277d434a362c

Subscribe to this mod's changes

seo-backlinks is an agent published in the GitHub repository Infrasity-Labs/dev-gtm-claude-skills (124 stars, last pushed 2mo ago), licensed MIT. It adds 45 tokens to every session and 1,517 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 91% identical to seo-backlinks, differing in 54 lines, and is treated as a copy.

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