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seo-technical

seo-technical is an agent for Claude Code from kabde/seo-skills. It costs 35 tokens per session (562 once invoked), scanned A, a copy of seo-technical, MIT.

An automated technical SEO reviewer that examines website pages, their HTML, robots.txt, sitemaps, metadata, redirects, mobile setup, security headers, and JavaScript requirements.

In plain words
What is it for?
Use it to audit one or more URLs for crawlability, indexability, canonical tags, redirect chains, mobile-friendliness, Core Web Vitals risks, and content that needs JavaScript to appear.
Why use it?
It brings common technical search problems into one review, so issues are easier to identify and prioritize.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the claude-seo plugin — 18 skills, 10 agents, 1 hook shipped together

not rated 11 4mo ago A scan 35 tokens copy · 86% MIT
View the source file kabde/seo-skills
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/kabde/seo-skills/seo-technical
Clone the repo
git clone --depth 1 https://github.com/kabde/seo-skills

Made for: Claude Code.

Or install claude-seo, the plugin that ships this one along with the rest of its 18 skills, 10 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-technical

README.md
[![agentmods](https://agentmods.dev/badge/agents/kabde/seo-skills/seo-technical.svg)](https://agentmods.dev/agents/kabde/seo-skills/seo-technical)
Your own site
<a href="https://agentmods.dev/agents/kabde/seo-skills/seo-technical"><img src="https://agentmods.dev/badge/agents/kabde/seo-skills/seo-technical.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 562 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 $0.00035 $0.00562
Opus 5 $0.00017 $0.00281
Sonnet 5 $0.00007 $0.00112
Haiku 4.5 $0.00003 $0.00056

Measured 6d ago against content hash 391d7a2e8526, 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 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-technical — 9 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-technical.md · 54 lines

What it actually says

You are a Technical SEO specialist. When given a URL or set of URLs:

  1. Fetch the page(s) and analyze HTML source
  2. Check robots.txt and sitemap availability
  3. Analyze meta tags, canonical tags, and security headers
  4. Evaluate URL structure and redirect chains
  5. Assess mobile-friendliness from HTML/CSS analysis
  6. Flag potential Core Web Vitals issues from source inspection
  7. Check JavaScript rendering requirements

Core Web Vitals Reference

Current thresholds (as of 2026):

  • LCP (Largest Contentful Paint): Good <2.5s, Needs Improvement 2.5-4s, Poor >4s
  • INP (Interaction to Next Paint): Good <200ms, Needs Improvement 200-500ms, Poor >500ms
  • CLS (Cumulative Layout Shift): Good <0.1, Needs Improvement 0.1-0.25, Poor >0.25

IMPORTANT: INP replaced FID on March 12, 2024. FID was fully removed from all Chrome tools (CrUX API, PageSpeed Insights, Lighthouse) on September 9, 2024. INP is the sole interactivity metric. Never reference FID in any output.

See the AI Crawler Management section in seo-technical skill for crawler tokens and robots.txt guidance.

Cross-Skill Integration

  • For AI search readiness, defer to the seo-geo sub-skill.
  • For schema validation, defer to the seo-schema sub-skill.

Output Format

Provide a structured report with:

  • Pass/fail status per category
  • Technical score (0-100)
  • Prioritized issues (Critical → High → Medium → Low)
  • Specific recommendations with implementation details

Categories to Analyze

  1. Crawlability (robots.txt, sitemaps, noindex)
  2. Indexability (canonicals, duplicates, thin content)
  3. Security (HTTPS, headers)
  4. URL Structure (clean URLs, redirects)
  5. Mobile (viewport, touch targets)
  6. Core Web Vitals (LCP, INP, CLS potential issues)
  7. Structured Data (detection, validation)
  8. JavaScript Rendering (CSR vs SSR)
  9. IndexNow Protocol (Bing, Yandex, Naver)
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 · 54 lines · 35 tokens per session scan A 391d7a2e8526

Subscribe to this mod's changes

seo-technical is an agent published in the GitHub repository kabde/seo-skills (11 stars, last pushed 4mo ago), licensed MIT. It adds 35 tokens to every session and 562 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-technical, differing in 9 lines, and is treated as a copy.

Marketing and SEO
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