seo-audit

seo-audit is a skill for Claude Code, Codex from AgentlyLabs/founder-skills. It costs 231 tokens per session (2,532 once invoked), scanned A, original, MIT.

A rigorous search-engine optimization audit that combines Google Search Console data with on-page and technical checks. Google Search Console is a Google service showing how a site appears in search and how people reach it.

In plain words
What is it for?
Use it to find search queries close to ranking well, explain click-through gaps, detect competing pages, investigate traffic declines, and review indexing coverage.
Why use it?
It ties findings to measured search performance and distinguishes supported causes from observations that the available data cannot prove.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to find search queries close to ranking well, explain click-through gaps, detect competing pages, investigate traffic declines, and review indexing coverage.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/agentlylabs/founder-skills/seo-audit
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 AgentlyLabs/founder-skills --skill seo-audit
Clone the repo
git clone --depth 1 https://github.com/AgentlyLabs/founder-skills

Made for: Claude Code, 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-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/agentlylabs/founder-skills/seo-audit/github.svg)](https://agentmods.dev/skills/agentlylabs/founder-skills/seo-audit)
Your own site
<a href="https://agentmods.dev/skills/agentlylabs/founder-skills/seo-audit"><img src="https://agentmods.dev/badge/skills/agentlylabs/founder-skills/seo-audit/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-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/agentlylabs/founder-skills/seo-audit"><img src="https://agentmods.dev/badge/skills/agentlylabs/founder-skills/seo-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 231 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,532 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 $0.00231 $0.02532
Opus 5 $0.00115 $0.01266
Sonnet 5 $0.00046 $0.00506
Haiku 4.5 $0.00023 $0.00253

Measured 11d ago against content hash 3cfc6b0b5555, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

seo-audit 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/analyze_gsc.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.

skills/seo-audit/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO Audit via Google Search Console

Why this skill exists

Most SEO audits fail in one of two ways. They either dump every crawler warning into a 200-row spreadsheet with no sense of what actually costs money, or they assert causes ("your rankings dropped because of the algorithm update") that the available data cannot support.

This skill exists to avoid both. The core discipline is: every finding is tied to measured GSC data, states the mechanism behind it, and carries an impact estimate whose arithmetic is shown so the user can disagree with it. A finding you cannot quantify or explain is an observation, not a recommendation, and belongs in an appendix.

The second discipline is honesty about what Search Console can and cannot tell you. A large fraction of published "GSC audit" advice quietly assumes data the API does not expose. Getting this wrong produces confident, wrong conclusions — see references/gsc-api-surface.md for exactly where the boundaries are.

Step 0 — Find the Search Console connection

There is no single canonical GSC MCP server, so do not assume tool names. Discover them:

  1. Search for the tools with ToolSearch using queries like search console, +searchconsole, google seo analytics. Load whatever matches.
  2. If nothing loads, check the MCP registry (search_mcp_registry with keywords like ["google search console", "seo"]) and surface connect options with suggest_connectors.
  3. Confirm which properties the connection can actually see before planning anything — the equivalent of sites.list. Property type matters: a domain property (sc-domain:example.com) aggregates all subdomains and protocols, a URL-prefix property (https://example.com/) does not. Auditing a URL-prefix property and reporting it as whole-site truth is a common and invisible error.

If no GSC connection exists, say so plainly and offer the fallback: a best-practice-only audit from crawling the live site (Step 4), clearly labeled as having no performance data behind it. Do not silently degrade into a generic checklist — the user asked for an audit grounded in their data, and they should know if they aren't getting one.

Read the full file on GitHub · 190 lines

Files

What ships with it

5 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. 11d ago First seen · 190 lines · 231 tokens per session scan A 3cfc6b0b5555

Subscribe to this mod's changes

seo-audit is a skill published in the GitHub repository AgentlyLabs/founder-skills (2 stars, last pushed 14d ago), licensed MIT. It adds 231 tokens to every session and 2,532 once invoked, about $0.0012 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 2026-08-31.

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