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Agent skill

SEO Performance

by AgriciDaniel in AgriciDaniel/codex-seo

Performance specialist for full audits. An agent skill from AgriciDaniel/codex-seo.

Custom licenceAuto-check passedFrontend & Design

Install SEO Performance

skills CLI
$ npx skills add AgriciDaniel/codex-seo --skill seo-performance -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install AgriciDaniel/codex-seo seo-performance --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/AgriciDaniel/codex-seo.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/seo-performance .claude/skills/seo-performance && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
seo-performance
GitHub stars
797
Token cost
~733 tokens
SKILL.md length
341 words
Files
1
Skills in repo
18
Repo updated
First seen
Licence
Custom licence

At a glance

Performance specialist for full audits. An agent skill from AgriciDaniel/codex-seo.

  • Tasks that involve Web performance
  • SKILL.md covers Shared Data Cache, Inputs, Execution Path and Outputs, plus 3 more sections
  • Needs PAGESPEED_API_KEY

What it does

SEO Performance is an agent skill from AgriciDaniel/codex-seo. Performance specialist for full audits. Measures CWV (LCP/INP/CLS), Lighthouse score signals, and emits deterministic report artifacts.

Its SKILL.md is about 730 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design, covering Web performance. The repository describes itself as: Codex-first SEO skill suite. 26 workflows, 24 TOML agents, DataForSEO/Gemini/Google/Firecrawl integrations, GEO/AEO, CWV, schema, backlinks, local/maps, and deterministic reports.

When your agent uses it

  • Tasks that involve Web performance

Example prompts

  • “/seo-performance”

Requirements

  • A credential in PAGESPEED_API_KEY

What it can do on your machine

Read from SKILL.md and the folder at commit 9a644f6. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • PAGESPEED_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

SEO Performance loads about 733 tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 341 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~38
When it runs · the whole SKILL.md, loaded when a task matches
~733

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 341 words (~733 tokens).

“Use this for the performance sub-track in full audits.”

— opening of SKILL.md by AgriciDaniel, Custom licence
name
seo-performance

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/seo-performance of AgriciDaniel/codex-seo.

Open the folder on GitHubat commit 9a644f6

Compare with similar skills

SEO Performance next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

SEO Performance compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
SEO Performance this skillAgriciDaniel/codex-seo797—~733Automated safety check: PassCustom licence
Image SEO and Optimization AuditAgriciDaniel/claude-seo19k2 repos~4.2kAutomated safety check: NotesMIT
Landing CraftEliasOulkadi/shokunin114—~4.5kAutomated safety check: PassMIT
SEO UnlighthouseAgriciDaniel/claude-seo19k—~617Automated safety check: PassMIT
Ship Checktextura-agency/next16-claude-starter133—~1.5kAutomated safety check: NotesUnlicense
SEO FundamentalsxenitV1/Antigravity-Workflows1302 repos~696Automated safety check: PassMIT

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    19k GitHub starsUsed in 2 repos~4.2k tokens
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    EliasOulkadi/shokunin

    Build conversion-optimized landing pages with CRO frameworks (Conversion Research, LIFT Model), scroll effects, A/B testing, personalization, form optimization, and Core Web Vitals (INP, LCP, CLS).

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  • Ship Check

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More from AgriciDaniel/codex-seo

All 18 skills in this repo

  • SEO Google

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  • SEO Ecommerce

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  • SEO Sxo

    AgriciDaniel/codex-seo

    Search Experience Optimization: reads Google SERPs backwards to detect page-type mismatches, derives user stories from search intent signals, and scores pages from multiple persona perspectives.

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  • SEO Page

    AgriciDaniel/codex-seo

    Deep single-page SEO analysis covering on-page elements, content quality, technical meta tags, schema, images, and performance.

    797 GitHub starsUsed in 5 repos~1.2k tokens
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  • SEO Schema

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    Auto-check passed

Categories

Questions about SEO Performance

What does SEO Performance do?

Performance specialist for full audits. An agent skill from AgriciDaniel/codex-seo. SEO Performance is an agent skill from AgriciDaniel/codex-seo. Performance specialist for full audits.

When should I use SEO Performance?

SEO Performance fits situations like: tasks that involve Web performance.

How do I install SEO Performance in Claude Code?

Run `npx skills add AgriciDaniel/codex-seo --skill seo-performance -a claude-code`. Or copy the skill folder (skills/seo-performance in AgriciDaniel/codex-seo) into .claude/skills/seo-performance in your project. Claude Code loads it when a task matches its description.

How do I install SEO Performance in Codex?

Run `npx skills add AgriciDaniel/codex-seo --skill seo-performance -a codex`. Or copy the skill folder (skills/seo-performance in AgriciDaniel/codex-seo) into .agents/skills/seo-performance in your project. Codex loads it when a task matches its description.

Can I use SEO Performance in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AgriciDaniel/codex-seo --skill seo-performance -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/seo-performance, .gemini/skills/seo-performance, .github/skills/seo-performance and .opencode/skills/seo-performance in your project.

What does SEO Performance need to run?

Going by SKILL.md and its folder, SEO Performance needs credentials named PAGESPEED_API_KEY. Our summary lists: A credential in PAGESPEED_API_KEY.

Does SEO Performance access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is SEO Performance safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does SEO Performance use?

SEO Performance has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does SEO Performance use?

About 733 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to SEO Performance?

Skills that share tags, products or a category with SEO Performance: Image SEO and Optimization Audit (AgriciDaniel/claude-seo, 19k stars), Landing Craft (EliasOulkadi/shokunin, 114 stars), SEO Unlighthouse (AgriciDaniel/claude-seo, 19k stars) and Ship Check (textura-agency/next16-claude-starter, 133 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains SEO Performance?

AgriciDaniel (a GitHub user) maintains it in AgriciDaniel/codex-seo, which has 797 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on September 11, 2026.

Source: AgriciDaniel/codex-seo on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.