a-seo-gsc

a-seo-gsc is a skill for Claude Code, Codex from imisic/claude-marketplace. It costs 29 tokens per session (3,395 once invoked), scanned A, original, MIT.

A workflow that turns Google Search Console CSV exports into a ranked action plan for improving a website’s search performance.

In plain words
What is it for?
Use it to analyze search-result performance and indexing exports, identify important issues, and write a dated SEO action-plan document.
Why use it?
It makes buried search data easier to interpret and turns reported problems into prioritized work.

Skill for Claude CodeCodex

Written for Claude Code and Codex: disable-model-invocation in frontmatter, but also agents/openai.yaml present. Also seen: mentions Claude Code.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the search-visibility plugin — 2 skills shipped together

Good fit Use it to analyze search-result performance and indexing exports, identify important issues, and write a dated SEO action-plan document.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add imisic/claude-marketplace
Claude Code
/plugin install search-visibility

Made for: Claude Code, Codex.

Or install search-visibility, the plugin that ships this one along with the rest of its 2 skills.

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 a-seo-gsc

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/imisic/claude-marketplace/a-seo-gsc"><img src="https://agentmods.dev/badge/skills/imisic/claude-marketplace/a-seo-gsc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,395 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 $0.00029 $0.03395
Opus 5.5 $0.00012 $0.01358
Sonnet 5.5 $0.00006 $0.00679
Haiku 4.5 $0.00003 $0.00340

Measured 5d ago against content hash 66ac1a83384c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

a-seo-gsc 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 5d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/fetch_gsc.py, scripts/parse_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.

plugins/search-visibility/skills/a-seo-gsc/SKILL.md · 141 lines

How it starts

The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.

a-seo-gsc: Search Console → action plan

Google Search Console already holds most of the signals for what is wrong with a site's search performance. This skill fetches its Performance data over the API or ingests manual exports, runs a deterministic parser, applies a full analysis playbook (adapting to the site type), and writes a prioritized action plan you can actually execute. It works on any website, not one specific project.

The output is a doc: docs/seo/YYYY-MM-DD-action-plan.md in the target project (or wherever the user keeps analyses), plus a spoken summary of the headline finding and the top moves.

First run: what to give me, and where to get it

Open by asking which route they are on, because both are fully supported and the answer changes only the first step:

Do you have the Search Console API set up for this property, or would you rather download the reports by hand? Both work. The API saves clicking and returns one extra thing the download cannot, but hand-exported CSVs are a first-class input here, not a fallback.

Route A: they have the API, or want it

python3 "${CLAUDE_PLUGIN_ROOT}/skills/a-seo-gsc/scripts/fetch_gsc.py" \
    --key "${user_config.gsc_key_file}" --property sc-domain:example.com --days 90

That writes current/ and previous/ directories of CSVs in Google's own export shape. If the property has no service-account key yet, do not hand them a link. Run Setup mode below.

Then ask for the two reports no API serves:

Two exports I cannot fetch, both from Indexing → Pages:

  1. Click Export on the summary. That gives the indexed vs not-indexed counts and the reason breakdown.
  2. Click the biggest "not indexed" reason (usually "Crawled - currently not indexed"), then Export the URL table. Repeat for any other large reason. This is the one people skip and the most useful file in the set. Drop the zips in a folder next to the fetched data. Optional extras: the Links report (top linking sites, also no API), Sitemaps, Core Web Vitals, and a screenshot or reading of Performance → Search generative AI (AI Overviews and AI Mode impressions; no API serves it).

Read the full file on GitHub · 141 lines

Files

What ships with it

7 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. 5d ago Changed 66ac1a83384c
  2. 1mo ago Changed 54b4585acba7
  3. 2mo ago Changed · +60 lines · +9 tokens per session 2fc53996cef7
  4. 2mo ago First seen · 81 lines · 20 tokens per session scan A 55345adc3708

Subscribe to this mod's changes

a-seo-gsc is a skill published in the GitHub repository imisic/claude-marketplace (1 stars, last pushed 5d ago), licensed MIT. It adds 29 tokens to every session and 3,395 once invoked, about $0.0001 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.

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