seo-technical

seo-technical is a skill for Claude Code from hashgraph-online/awesome-codex-plugins. It costs 73 tokens per session (1,984 once invoked), scanned A, original, Apache-2.0.

A technical search-engine optimisation audit for a website. It checks whether search crawlers can access and index pages, as well as URLs, mobile behaviour, Core Web Vitals, structured data, JavaScript rendering, and the IndexNow protocol.

In plain words
What is it for?
Use it to review robots.txt, XML sitemaps, crawl depth, indexing controls, rendering, page speed, security headers, structured data, and crawler access rules.
Why use it?
A site can contain useful content yet remain hard for search engines to crawl or understand. This audit helps locate blocked pages, broken sitemaps, accidental no-index settings, slow pages, and content that appears only after JavaScript runs.

Skill for Claude Code

Written for Claude Code: argument-hint 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 skills/hashgraph-online/awesome-codex-plugins/seo-technical
Any agent
npx skills add hashgraph-online/awesome-codex-plugins --skill seo-technical
Clone the repo
git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins

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-technical

README.md
[![agentmods](https://agentmods.dev/badge/skills/hashgraph-online/awesome-codex-plugins/seo-technical.svg)](https://agentmods.dev/skills/hashgraph-online/awesome-codex-plugins/seo-technical)
Your own site
<a href="https://agentmods.dev/skills/hashgraph-online/awesome-codex-plugins/seo-technical"><img src="https://agentmods.dev/badge/skills/hashgraph-online/awesome-codex-plugins/seo-technical.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,984 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00073 $0.01984
Opus 5 $0.00036 $0.00992
Sonnet 5 $0.00015 $0.00397
Haiku 4.5 $0.00007 $0.00198

Measured yesterday against content hash d347f9093801, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

seo-technical 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 yesterday.

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

Copies of this mod

5 near-identical copies found in the catalogue:

plugins/BestLemoon/codex-seo/skills/seo-technical/SKILL.md · 174 lines

How it starts

The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Technical SEO Audit

Categories

1. Crawlability

  • robots.txt: exists, valid, not blocking important resources
  • XML sitemap: exists, referenced in robots.txt, valid format
  • Noindex tags: intentional vs accidental
  • Crawl depth: important pages within 3 clicks of homepage
  • JavaScript rendering: check if critical content requires JS execution
  • Crawl budget: for large sites (>10k pages), efficiency matters
AI Crawler Management

As of 2025-2026, AI companies actively crawl the web to train models and power AI search. Managing these crawlers via robots.txt is a critical technical SEO consideration.

Known AI crawlers:

Crawler Company robots.txt token Purpose
GPTBot OpenAI GPTBot Model training
ChatGPT-User OpenAI ChatGPT-User Real-time browsing
ClaudeBot Anthropic ClaudeBot Model training
PerplexityBot Perplexity PerplexityBot Search index + training
Bytespider ByteDance Bytespider Model training
Google-Extended Google Google-Extended Gemini training (NOT search)
CCBot Common Crawl CCBot Open dataset

Key distinctions:

  • Blocking Google-Extended prevents Gemini training use but does NOT affect Google Search indexing or AI Overviews (those use Googlebot)
  • Blocking GPTBot prevents OpenAI training but does NOT prevent ChatGPT from citing your content via browsing (ChatGPT-User)
  • ~3-5% of websites now use AI-specific robots.txt rules

Example, selective AI crawler blocking:

# Allow search indexing, block AI training crawlers
User-agent: GPTBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

# Allow all other crawlers (including Googlebot for search)
User-agent: *
Allow: /

Recommendation: Consider your AI visibility strategy before blocking. Being cited by AI systems drives brand awareness and referral traffic. Cross-reference the seo-geo skill for full AI visibility optimization.

Read the full file on GitHub · 174 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. yesterday First seen · 174 lines · 73 tokens per session scan A d347f9093801

Subscribe to this mod's changes

seo-technical is a skill published in the GitHub repository hashgraph-online/awesome-codex-plugins (935 stars, last pushed today), licensed Apache-2.0. It adds 73 tokens to every session and 1,984 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

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