seo-geo

seo-geo is a plugin for Claude Code from JustineDevs/premortem. Its manifest loads nothing; the 1 skill it bundles cost 90 tokens per session together, scanned A, a copy of seo-geo, Apache-2.0.

A website-optimization plugin for improving visibility in Google, Bing, and AI search engines such as ChatGPT, Perplexity, Gemini, Copilot, and Claude. GEO means Generative Engine Optimization: shaping pages so AI systems can understand and cite them.

In plain words
What is it for?
Use it for keyword and website analysis, schema markup, metadata improvements, and optimization aimed at traditional search and AI citations.
Why use it?
It helps website owners address search-visibility issues across both conventional rankings and AI-generated answers.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it for keyword and website analysis, schema markup, metadata improvements, and optimization aimed at traditional search and AI citations.

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Install in Claude Code
/plugin marketplace add JustineDevs/premortem
/plugin install seo-geo
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/JustineDevs/premortem

Made for: Claude Code.

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-geo

README.md
[![agentmods](https://agentmods.dev/badge/plugins/justinedevs/premortem/seo-geo/github.svg)](https://agentmods.dev/plugins/justinedevs/premortem/seo-geo)
Your own site
<a href="https://agentmods.dev/plugins/justinedevs/premortem/seo-geo"><img src="https://agentmods.dev/badge/plugins/justinedevs/premortem/seo-geo/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-geo

Your own site · 80×15
<a href="https://agentmods.dev/plugins/justinedevs/premortem/seo-geo"><img src="https://agentmods.dev/badge/plugins/justinedevs/premortem/seo-geo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 90 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

seo-geo 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 1mo 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

100% identical to seo-geo — 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/skills/seo-geo/.claude-plugin/plugin.json · 29 lines

What it actually says

{
  "name": "seo-geo",
  "version": "1.0.0",
  "description": "SEO & GEO (Generative Engine Optimization) for websites. Optimize for AI search engines (ChatGPT, Perplexity, Gemini, Copilot, Claude) and traditional search (Google, Bing). Includes Princeton GEO research methods for +40% AI visibility.",
  "author": {
    "name": "ReScienceLab"
  },
  "homepage": "https://github.com/ReScienceLab/opc-skills/tree/main/skills/seo-geo",
  "repository": "https://github.com/ReScienceLab/opc-skills",
  "license": "MIT",
  "keywords": [
    "SEO",
    "GEO",
    "search optimization",
    "schema markup",
    "JSON-LD",
    "meta tags",
    "keyword research",
    "AI visibility",
    "ChatGPT ranking",
    "Perplexity"
  ],
  "skills": [
    "./SKILL.md"
  ],
  "commands": [
    "./scripts/"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 90 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 1mo ago First seen · 29 lines scan A ea32b12d6775

Subscribe to this mod's changes

seo-geo is a plugin published in the GitHub repository JustineDevs/premortem (2 stars, last pushed 2mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. It is 100% identical to seo-geo, differing in 9 lines, and is treated as a copy.