seo-llm-site-architect

seo-llm-site-architect is a skill for Codex from sergekostenchuk/ui-ux-agent-skill-system. It costs 127 tokens per session (2,223 once invoked), scanned A, original, Apache-2.0.

A website architecture guide for search engines, answer engines, language models, and user-directed agents. It focuses on clear HTML, accurate structured data, canonical URLs, crawl settings, sitemaps, and other ways of making public information understandable.

In plain words
What is it for?
Use it to create, edit, audit, or monitor technical SEO and AI-search readiness, including robots.txt, sitemap.xml, llms.txt, structured data, and site content architecture.
Why use it?
It helps improve discoverability and machine understanding without promising search rankings or AI citations. It also keeps private or unsupported information out of public files.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to create, edit, audit, or monitor technical SEO and AI-search readiness, including robots.txt, sitemap.xml, llms.txt, structured data, and site content architecture.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect
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.

Any agent
npx skills add sergekostenchuk/ui-ux-agent-skill-system --skill seo-llm-site-architect
Clone the repo
git clone --depth 1 https://github.com/sergekostenchuk/ui-ux-agent-skill-system

Made for: Codex.

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-llm-site-architect

README.md
[![agentmods](https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect/github.svg)](https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect)
Your own site
<a href="https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect"><img src="https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect/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-llm-site-architect

Your own site · 80×15
<a href="https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect"><img src="https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/seo-llm-site-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 127 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,223 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 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 $0.00127 $0.02223
Opus 5 $0.00063 $0.01111
Sonnet 5 $0.00025 $0.00445
Haiku 4.5 $0.00013 $0.00222

Measured 12d ago against content hash cd0d8bb4c104, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

seo-llm-site-architect 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 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/audit_site.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

core/skills/seo-llm-site-architect/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO LLM Site Architect

Goal

Act as a senior web/search architect. Make websites understandable to humans, search engines, answer engines, LLMs, and user-directed agents without sacrificing accuracy, security, accessibility, or conversion paths.

Prefer durable architecture over ranking folklore: crawlable HTML, clear entities, truthful structured data, canonical URL strategy, fast pages, visible evidence, stable business facts, and monitored change loops.

Non-Negotiables

  • Verify current primary-source docs before changing crawler policy, AI-search policy, or anything described as "latest". Crawler names, IP verification, and AI search surfaces change often.
  • Do not promise rankings, citations, AI Overview inclusion, ChatGPT answers, or crawler compliance. State evidence and residual uncertainty.
  • Do not add structured data for content that is not visible to users on the page.
  • Do not place secrets, private URLs, customer data, unreleased content, or internal instructions in public files such as llms.txt, markdown alternates, sitemaps, or JSON-LD.
  • Treat llms.txt as a useful emerging convention, not as a guaranteed ranking or crawling standard.
  • Keep SEO edits scoped to the site's existing framework, routing, metadata helpers, CMS model, and deployment constraints.

Cross-Skill Coordination

Use this skill with ui-ux-llm-product-architect when a task touches both public discoverability and interface experience.

  • This skill owns: crawl/index architecture, canonical routes, metadata, robots.txt, sitemaps, llms.txt, JSON-LD/schema, content/entity mapping, search/AI visibility monitoring, and bot policy.
  • llm-friendly-site-optimizer owns: tactical LLM-citation audits, llms.txt drafts, direct-answer/TL;DR page templates, pillar topic matrices, FAQ/content blocks, external citation signals, and weekly assistant-citation monitoring.
  • ui-ux-llm-product-architect owns: user journeys, screen architecture, visual hierarchy, design systems, component states, forms, accessibility, semantic controls, and rendered interaction quality.
  • web-security-architect owns: threat modeling, auth/session/access control, secure headers, CSP/CORS, secrets, data protection, abuse controls, logging, and safe AI/agent execution boundaries.
  • Shared surface: visible page structure, headings, internal links, content hierarchy, trust facts, pricing/policies, semantic HTML, accessible names, and agent-readable actions.
  • Source of truth: visible user-facing content first. Metadata, JSON-LD, OpenGraph, llms.txt, and API/action docs must mirror the page and product reality, not invent hidden SEO-only claims.
  • Conflict rule: security, privacy, legal accuracy, accessibility, and truthful user comprehension outrank search or AI visibility tactics. Do not weaken auth, CSP, CORS, cookies, rate limits, or private-content boundaries for discoverability.

Read the full file on GitHub · 125 lines

Files

What ships with it

9 files 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. 12d ago First seen · 125 lines · 127 tokens per session scan A cd0d8bb4c104

Subscribe to this mod's changes

seo-llm-site-architect is a skill published in the GitHub repository sergekostenchuk/ui-ux-agent-skill-system (23 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 127 tokens to every session and 2,223 once invoked, about $0.0006 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 2026-08-30.

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