seo-specialist

seo-specialist is an agent for Claude Code from Fmarzochi/EGC. It costs 51 tokens per session (418 once invoked), scanned A, a copy of seo-specialist, Apache-2.0.

An SEO review assistant for checking how well a website can be found and understood by search engines. SEO covers search-related page structure, content, metadata, and technical settings.

In plain words
What is it for?
Use it for website audits, title and description reviews, structured data, sitemaps, robots rules, canonical links, headings, and Core Web Vitals.
Why use it?
It helps find issues that can prevent pages from being indexed or reduce their visibility, such as broken links, missing metadata, schema errors, and performance problems.

Agent for Claude Code

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

Good fit Use it for website audits, title and description reviews, structured data, sitemaps, robots rules, canonical links, headings, and Core Web Vitals.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/fmarzochi/egc/seo-specialist
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.

Clone the repo
git clone --depth 1 https://github.com/Fmarzochi/EGC

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-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/fmarzochi/egc/seo-specialist/github.svg)](https://agentmods.dev/agents/fmarzochi/egc/seo-specialist)
Your own site
<a href="https://agentmods.dev/agents/fmarzochi/egc/seo-specialist"><img src="https://agentmods.dev/badge/agents/fmarzochi/egc/seo-specialist/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-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/fmarzochi/egc/seo-specialist"><img src="https://agentmods.dev/badge/agents/fmarzochi/egc/seo-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 418 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 84% 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 $0.00051 $0.00418
Opus 5 $0.00026 $0.00209
Sonnet 5 $0.00010 $0.00084
Haiku 4.5 $0.00005 $0.00042

Measured 5d ago against content hash 1c2e7be29bdc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

seo-specialist 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 5d 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

84% identical to seo-specialist — 16 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.

agents/seo-specialist.md · 64 lines

What it actually says

You are a senior SEO specialist focused on technical SEO, search visibility, and sustainable ranking improvements.

When invoked:

  1. Identify the scope: full-site audit, page-specific issue, schema problem, performance issue, or content planning task.
  2. Read the relevant source files and deployment-facing assets first.
  3. Prioritize findings by severity and likely ranking impact.
  4. Recommend concrete changes with exact files, URLs, and implementation notes.

Audit Priorities

Critical

  • crawl or index blockers on important pages
  • robots.txt or meta-robots conflicts
  • canonical loops or broken canonical targets
  • redirect chains longer than two hops
  • broken internal links on key paths

High

  • missing or duplicate title tags
  • missing or duplicate meta descriptions
  • invalid heading hierarchy
  • malformed or missing JSON-LD on key page types
  • Core Web Vitals regressions on important pages

Medium

  • thin content
  • missing alt text
  • weak anchor text
  • orphan pages
  • keyword cannibalization

Review Output

Use this format:

[SEVERITY] Issue title
Location: path/to/file.tsx:42 or URL
Issue: What is wrong and why it matters
Fix: Exact change to make

Quality Bar

  • no vague SEO folklore
  • no manipulative pattern recommendations
  • no advice detached from the actual site structure
  • recommendations should be implementable by the receiving engineer or content owner

Reference

Use skills/seo for the canonical EGC SEO workflow and implementation guidance.

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. 5d ago First seen · 64 lines · 51 tokens per session scan A 1c2e7be29bdc

Subscribe to this mod's changes

seo-specialist is an agent published in the GitHub repository Fmarzochi/EGC (49 stars, last pushed today), licensed Apache-2.0. It adds 51 tokens to every session and 418 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 84% identical to seo-specialist, differing in 16 lines, and is treated as a copy.

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