meta-description

meta-description is a skill for Claude Code, Codex from T4wroot/agentic-seo. It costs 95 tokens per session (889 once invoked), scanned A, a copy of meta-description, MIT.

A meta description guide helps write the short page summary that search engines may show beneath a result title.

In plain words
What is it for?
Use it to create unique page descriptions, include relevant terms and calls to action, and check length across languages and devices.
Why use it?
It helps make search snippets clearer and more relevant while accounting for the fact that search engines display text by pixel width rather than a fixed character count.

Skill for Claude CodeCodex

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

Good fit Use it to create unique page descriptions, include relevant terms and calls to action, and check length across languages and devices.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/t4wroot/agentic-seo/description
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 T4wroot/agentic-seo --skill description
Clone the repo
git clone --depth 1 https://github.com/T4wroot/agentic-seo

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 meta-description

README.md
[![agentmods](https://agentmods.dev/badge/skills/t4wroot/agentic-seo/description/github.svg)](https://agentmods.dev/skills/t4wroot/agentic-seo/description)
Your own site
<a href="https://agentmods.dev/skills/t4wroot/agentic-seo/description"><img src="https://agentmods.dev/badge/skills/t4wroot/agentic-seo/description/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 meta-description

Your own site · 80×15
<a href="https://agentmods.dev/skills/t4wroot/agentic-seo/description"><img src="https://agentmods.dev/badge/skills/t4wroot/agentic-seo/description.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 889 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 100% copy Near-identical to another mod 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 $0.00095 $0.00889
Opus 5 $0.00048 $0.00445
Sonnet 5 $0.00019 $0.00178
Haiku 4.5 $0.00010 $0.00089

Measured 7d ago against content hash bb19bbfaa2d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

meta-description 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 7d 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 meta-description — 0 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.

skills/seo/on-page/description/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO On-Page: Meta Description

Guides optimization of the meta description tag for search engines and SERP display.

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Scope (On-Page SEO)

  • Meta description: CTA; unique value; target keyword; unique per page

Length by Language

Google truncates by pixel width (~920px desktop, ~680px mobile), not character count. Character limits are approximate—CJK chars are wider (~2× Latin), so fewer fit in the same pixels.

Script / Language Meta description (chars) Notes
Latin (English, Spanish, French, etc.) 150–160 Desktop ~158; mobile ~120
CJK (Chinese, Japanese, Korean) 75–100 Full-width chars; 70–80 conservative; 90–100 on some locales/fonts; use pixel checker when available
Cyrillic (Russian, etc.) 140–155 Slightly wider than Latin
Arabic, Hebrew 70–90 RTL; variable width

Pixel tools: Use a pixel-accurate meta tag checker for CJK—font and locale affect display; character counts vary by source (65–80 to 90–120 in practice).

Multilingual: Use locale-specific limits; localize, don't just translate. See localization-strategy, translation.

Initial Assessment

Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for brand voice and target keywords.

Identify:

  1. Page type: Homepage, landing, blog, product, etc.
  2. Primary keyword: Target search query
  3. Language / script: Apply length rule above
  4. CTA: Primary action (sign up, learn more, buy, etc.)

Best Practices

Item Guideline
Length Per language (see table above); ~150 chars sweet spot for Latin; truncates beyond pixel limit
Unique One per page; no duplicate descriptions
Intent Answer "why should I click?"; match search intent
CTA Include clear call-to-action when relevant
Keyword Naturally include target keyword
Content Include author, date, price where relevant
Impact Does not affect ranking; well-written descriptions improve CTR 5–10%

Read the full file on GitHub · 73 lines

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. 7d ago First seen · 73 lines · 95 tokens per session scan A bb19bbfaa2d8

Subscribe to this mod's changes

meta-description is a skill published in the GitHub repository T4wroot/agentic-seo (15 stars, last pushed 7d ago), licensed MIT. It adds 95 tokens to every session and 889 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to meta-description, differing in 0 lines, and is treated as a copy.

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