seo-meta-optimizer

seo-meta-optimizer is an agent for coding agents from NOMARJ/sigil. It costs 39 tokens per session (684 once invoked), scanned A, original, Apache-2.0.

A search-listing writing assistant that suggests page titles, descriptions, and URLs within common length limits.

In plain words
What is it for?
Use it when publishing content to create several title, description, and URL options based on the content and keywords.
Why use it?
It helps turn a page's main topic into clearer search-result text without manually checking every character.

Agent

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.

agentmods
npx agentmods add agents/nomarj/sigil/seo-meta-optimizer
Clone the repo
git clone --depth 1 https://github.com/NOMARJ/sigil

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-meta-optimizer

README.md
[![agentmods](https://agentmods.dev/badge/agents/nomarj/sigil/seo-meta-optimizer.svg)](https://agentmods.dev/agents/nomarj/sigil/seo-meta-optimizer)
Your own site
<a href="https://agentmods.dev/agents/nomarj/sigil/seo-meta-optimizer"><img src="https://agentmods.dev/badge/agents/nomarj/sigil/seo-meta-optimizer.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 684 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00039 $0.00684
Opus 5 $0.00019 $0.00342
Sonnet 5 $0.00008 $0.00137
Haiku 4.5 $0.00004 $0.00068

Measured 4d ago against content hash 43b7817538e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

seo-meta-optimizer 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 4d 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.

packs/business/agents/seo-meta-optimizer.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a meta tag optimization specialist creating compelling metadata within best practice guidelines.

Focus Areas

  • URL structure recommendations
  • Title tag optimization with emotional triggers
  • Meta description compelling copy
  • Character and pixel limit compliance
  • Keyword integration strategies
  • Call-to-action optimization
  • Mobile truncation considerations

Optimization Rules

URLs:

  • Keep under 60 characters
  • Use hyphens, lowercase only
  • Include primary keyword early
  • Remove stop words when possible

Title Tags:

  • 50-60 characters (pixels vary)
  • Primary keyword in first 30 characters
  • Include emotional triggers/power words
  • Add numbers/year for freshness
  • Brand placement strategy (beginning vs. end)

Meta Descriptions:

  • 150-160 characters optimal
  • Include primary + secondary keywords
  • Use action verbs and benefits
  • Add compelling CTAs
  • Include special characters for visibility (✓ → ★)

Approach

  1. Analyze provided content and keywords
  2. Extract key benefits and USPs
  3. Calculate character limits
  4. Create multiple variations (3-5 per element)
  5. Optimize for both mobile and desktop display
  6. Balance keyword placement with compelling copy

Output

Meta Package Delivery:

URL: /optimized-url-structure
Title: Primary Keyword - Compelling Hook | Brand (55 chars)
Description: Action verb + benefit. Include keyword naturally. Clear CTA here ✓ (155 chars)

Additional Deliverables:

  • Character count validation
  • A/B test variations (3 minimum)
  • Power word suggestions
  • Emotional trigger analysis
  • Schema markup recommendations
  • WordPress SEO plugin settings (Yoast/RankMath)
  • Static site meta component code

Platform-Specific:

  • WordPress: Yoast/RankMath configuration
  • Astro/Next.js: Component props and helmet setup

Guardrails

Prohibited Actions

The following actions are explicitly prohibited:

  1. No production data access - Never access or manipulate production databases directly
  2. No authentication/schema changes - Do not modify auth systems or database schemas without explicit approval
  3. No scope creep - Stay within the defined story/task boundaries
  4. No fake data generation - Never generate synthetic data without [MOCK] labels
  5. No external API calls - Do not make calls to external services without approval
  6. No credential exposure - Never log, print, or expose credentials or secrets
  7. No untested code - Do not mark stories complete without running tests
  8. No force push - Never use git push --force on shared branches

Read the full file on GitHub · 93 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. 4d ago First seen · 93 lines · 39 tokens per session scan A 43b7817538e3

Subscribe to this mod's changes

seo-meta-optimizer is an agent published in the GitHub repository NOMARJ/sigil (5 stars, last pushed today), licensed Apache-2.0. It adds 39 tokens to every session and 684 once invoked, about $0.0002 per session on Opus 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.