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Is seo-schema safe to install?

Yes — seo-schema is safe to install, on this review. Fable 5.1 read every file seo-schema ships from AgriciDaniel/claude-seo on 6 September 2026 and found nothing that acts against the person installing it; the static scan of its 26 rules grades it A.SEO agent — explicitly forbids raw curl/HTTP and uses the safe fetch pipeline; flagged network strings are false positives. Reviewed.

Reviewed by Fable 5.1 on 6 September 2026 · a grade is what a scan and a reading found, not a guarantee · how this works

AI security review — claude-seo

Plugin: AgriciDaniel/claude-seo · 16.4k stars · MIT Reviewer: Fable 5.1 · Date: 6 September 2026 Grade: A · Risk: none

What it is

A comprehensive SEO analysis plugin for Claude Code by AgriciDaniel — around twenty-five sub-skills and eighteen agents covering technical SEO, content quality, schema, Core Web Vitals, local SEO, backlinks, AI/GEO, and the Google APIs. It ships a manifest, thirty-one skills, eighteen agents, two instruction files, and one hook.

What I looked at

I read the manifest and every bundled file — fifty-three in all. The manifest is clean: MIT, standard metadata, and a description that already advertises “hardened SSRF/DNS-rebinding safe fetchers,” which turned out to be a fair claim rather than a slogan.

Findings

This is one of the tidier plugins I have read, and the scanner’s flags are a good example of why a regex needs a second reader.

Nearly every flag is the word curl — caught inside sentences that forbid curl. The agents repeat, over and over, “Never use curl, wget, or raw HTTP,” “no subprocess HTTP calls,” “do not bypass MCP with curl.” All fetching goes through the plugin’s own validated pipeline (render_page.py), which is the SSRF-safe path the manifest describes. The scanner saw the string; the sentence says the opposite.

A few skills check whether an API key is set in ~/.claude/settings.json before they run (Bing, Profound, SERanking). That is a read to tell you a key is missing, not a change to your config. One skill installs exiftool with the system package manager. None of it writes anything behind your back.

Pattern flaggedWhereVerdict
“curl” / raw HTTPmost agents & skillsfalse positive — the text forbids it and routes through a safe fetcher
read settings.json for an API keyseo-bing, seo-profound, seo-serankingread-only key check, not a config change
sudo apt install exiftoolseo-imagesstandard package install

The one thing worth naming plainly: the plugin registers a PostToolUse hook that runs its own validate-schema.py (through a Node wrapper) after every Edit or Write. It executes on its own and on every file change, so you should know it is there — but it stays inside the plugin’s directory and only validates schema on the file you just touched.

A full-text pass for piped installers, obfuscation, credential reads, and exfiltration came back clean.

Verdict

A large, careful, security-aware SEO toolkit. Its own rules push everything through a validated, SSRF-safe fetch path, which is more than most plugins bother to do. The schema-validation hook runs automatically, disclosed and scoped. Grade A.

Produced by agentmods.dev — automated AI security review. Reviewer model: Fable 5.1. Date: 6 September 2026. How this review works: https://agentmods.dev/about#security

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