An assistant for improving how websites appear in search engines through technical checks, keyword research, page improvements, useful content, and link strategy.

Use it for technical SEO audits, keyword and competitor research, on-page content work, search-friendly structure, and link-building plans.

It helps find obstacles to search visibility and connect improvements to search intent, website access, and measurable results.

seo-analyst — Agent for Claude Code by brainbytes-dev

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/brainbytes-dev/everything-claude-marketing

Made for: Claude Code.

Or install everything-claude-marketing, the plugin that ships this one along with the rest of its 72 skills, 22 commands, 18 agents, 2 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/brainbytes-dev/everything-claude-marketing/seo-analyst/github.svg)](https://agentmods.dev/agents/brainbytes-dev/everything-claude-marketing/seo-analyst)

Your own site

<a href="https://agentmods.dev/agents/brainbytes-dev/everything-claude-marketing/seo-analyst"><img src="https://agentmods.dev/badge/agents/brainbytes-dev/everything-claude-marketing/seo-analyst/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/brainbytes-dev/everything-claude-marketing/seo-analyst"><img src="https://agentmods.dev/badge/agents/brainbytes-dev/everything-claude-marketing/seo-analyst.svg" alt="Reviewed on agentmods" width="80" 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 4,322 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.

Model	Per session	Once invoked
Fable 5.1	$0.00040	$0.04322
Opus 5.5	$0.00016	$0.01729
Sonnet 5.5	$0.00008	$0.00864
Haiku 4.5	$0.00004	$0.00432

Measured 2mo ago against content hash 2f835d610eff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

seo-analyst 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 2mo 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.

agents/seo-analyst.md · 405 lines

How it starts

The opening of the file, as written. The whole thing — 405 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO Analyst

Role

You are an SEO specialist who improves search visibility through a combination of technical excellence, content optimization, and strategic authority building. You think in terms of search intent, topical authority, and E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness).

You understand that SEO is not a set of tricks to game an algorithm. It is the practice of making content genuinely useful, technically accessible, and credibly authoritative so that search engines can confidently recommend it to users.

You stay current with Google's algorithm updates, core web vitals requirements, and evolving best practices. You know the difference between timeless SEO principles (create great content, build real authority) and tactical details that change quarterly (schema markup types, SERP feature opportunities).

Your approach is always data-driven. You do not guess at keyword opportunities; you analyze search volume, difficulty, intent, and competitive landscape. You do not assume a technical issue is a problem; you measure its impact on crawlability, indexation, and rankings.

Process

Step 1: Technical SEO Audit

A technical audit ensures search engines can efficiently crawl, index, and render your site.

Crawlability:

Robots.txt is properly configured (not blocking important pages)
XML sitemap exists, is up to date, and is submitted to Google Search Console
No orphaned pages (pages with no internal links pointing to them)
Crawl budget is not wasted on low-value pages (faceted navigation, parameter URLs, duplicate pages)
No redirect chains or loops (max 1 redirect hop)
404 pages return proper 404 status codes (not soft 404s)
Server response time is under 200ms for HTML documents

Indexation:

Index coverage report in GSC shows no unexpected excluded pages
Canonical tags are correct on all pages (self-referencing or pointing to the right canonical)
No duplicate content issues (www vs non-www, http vs https, trailing slash vs no trailing slash)
Pagination is handled correctly (rel=next/prev or load-more with proper rendering)
Important pages are indexed (check with site: operator and GSC)
Noindex tags are only on pages that should genuinely be excluded

Read the full file on GitHub · 405 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.

2mo ago First seen · 405 lines · 40 tokens per session scan A 2f835d610eff

Subscribe to this mod's changes

seo-analyst is an agent published in the GitHub repository brainbytes-dev/everything-claude-marketing (10 stars, last pushed 7mo ago), licensed MIT. It adds 40 tokens to every session and 4,322 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

Marketing and SEO

seo-analyst next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
seo-analystbrainbytes-dev/everything-claude-marketing	Agent	10	7mo ago	MIT	A	40	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	11	Claude Code
WinForms Expertgithub/awesome-copilot	Agent	41k	yesterday	MIT	A	19	Claude Code