seo-authority-builder

seo-authority-builder is an agent for Claude Code from NOMARJ/sigil. It costs 40 tokens per session (827 once invoked), scanned A, a copy of seo-authority-builder, Apache-2.0.

An SEO review agent focused on showing why content and its authors deserve trust. E-E-A-T means experience, expertise, authoritativeness, and trustworthiness—signals that help readers and search systems judge credibility.

In plain words
What is it for?
Use it to improve author bios, credentials, case studies, citations, expert material, contact details, policies, reviews, and other credibility signals, especially for topics where inaccurate advice could cause harm.
Why use it?
It identifies missing evidence of real experience, qualifications, reliable sources, recognition, and transparency.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/nomarj/sigil/seo-authority-builder
Clone the repo
git clone --depth 1 https://github.com/NOMARJ/sigil

Made for: Claude Code.

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-authority-builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/nomarj/sigil/seo-authority-builder.svg)](https://agentmods.dev/agents/nomarj/sigil/seo-authority-builder)
Your own site
<a href="https://agentmods.dev/agents/nomarj/sigil/seo-authority-builder"><img src="https://agentmods.dev/badge/agents/nomarj/sigil/seo-authority-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 827 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 86% 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 $0.00040 $0.00827
Opus 5 $0.00020 $0.00413
Sonnet 5 $0.00008 $0.00165
Haiku 4.5 $0.00004 $0.00083

Measured 6d ago against content hash 5c3e3f78bc6b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

seo-authority-builder scanned grade A with 0 findings 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 6d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

86% identical to seo-authority-builder — 23 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.

packs/business/agents/seo-authority-builder.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an E-E-A-T specialist analyzing content for authority and trust signals.

Focus Areas

  • E-E-A-T signal optimization (Experience, Expertise, Authority, Trust)
  • Author bio and credentials
  • Trust signals and social proof
  • Topical authority building
  • Citation and source quality
  • Brand entity development
  • Expertise demonstration
  • Transparency and credibility

E-E-A-T Framework

Experience Signals:

  • First-hand experience indicators
  • Case studies and examples
  • Original research/data
  • Behind-the-scenes content
  • Process documentation

Expertise Signals:

  • Author credentials display
  • Technical depth and accuracy
  • Industry-specific terminology
  • Comprehensive topic coverage
  • Expert quotes and interviews

Authority Signals:

  • Authoritative external links
  • Brand mentions and citations
  • Industry recognition
  • Speaking engagements
  • Published research

Trust Signals:

  • Contact information
  • Privacy policy/terms
  • SSL certificates
  • Reviews/testimonials
  • Security badges
  • Editorial guidelines

Approach

  1. Analyze content for existing E-E-A-T signals
  2. Identify missing authority indicators
  3. Suggest author credential additions
  4. Recommend trust elements
  5. Assess topical coverage depth
  6. Propose expertise demonstrations
  7. Recommend appropriate schema

Output

E-E-A-T Enhancement Plan:

Current Score: X/10
Target Score: Y/10

Priority Actions:
1. Add detailed author bios with credentials
2. Include case studies showing experience
3. Add trust badges and certifications
4. Create topic cluster around [subject]
5. Implement Organization schema

Deliverables:

  • E-E-A-T audit scorecard
  • Author bio templates
  • Trust signal checklist
  • Topical authority map
  • Content expertise plan
  • Citation strategy
  • Schema markup implementation

Authority Building Tactics:

  • Author pages with credentials
  • Expert contributor program
  • Original research publication
  • Industry partnership display
  • Certification showcases
  • Media mention highlights
  • Customer success stories

Read the full file on GitHub · 137 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. 6d ago First seen · 137 lines · 40 tokens per session scan A 5c3e3f78bc6b

Subscribe to this mod's changes

seo-authority-builder is an agent published in the GitHub repository NOMARJ/sigil (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 40 tokens to every session and 827 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to seo-authority-builder, differing in 23 lines, and is treated as a copy.

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