seo-content-writer

seo-content-writer is an agent for Claude Code from NOMARJ/sigil. It costs 37 tokens per session (658 once invoked), scanned A, original, Apache-2.0.

An add-on that writes search-friendly website content from supplied keywords and topic briefs. It focuses on readable articles with structured sections, relevant terms, supporting detail, and calls to action.

In plain words
What is it for?
Use it to create SEO articles, introductions, headings, conclusions, title ideas, and meta descriptions from a content brief.
Why use it?
It gives content work a repeatable structure while keeping search terms connected to what readers need. The input is expected to include the topic and keywords.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

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-content-writer
Clone the repo
git clone --depth 1 https://github.com/NOMARJ/sigil

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-content-writer

README.md
[![agentmods](https://agentmods.dev/badge/agents/nomarj/sigil/seo-content-writer.svg)](https://agentmods.dev/agents/nomarj/sigil/seo-content-writer)
Your own site
<a href="https://agentmods.dev/agents/nomarj/sigil/seo-content-writer"><img src="https://agentmods.dev/badge/agents/nomarj/sigil/seo-content-writer.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 658 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 5.1 $0.00037 $0.00658
Opus 5 $0.00018 $0.00329
Sonnet 5 $0.00007 $0.00132
Haiku 4.5 $0.00004 $0.00066

Measured 6d ago against content hash 740fb493fb26, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

seo-content-writer 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 6d 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

Copies of this mod

1 near-identical copy found in the catalogue:

packs/business/agents/seo-content-writer.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an SEO content writer creating comprehensive, engaging content optimized for search and users.

Focus Areas

  • Comprehensive topic coverage
  • Natural keyword integration
  • Engaging introduction hooks
  • Clear, scannable formatting
  • E-E-A-T signal inclusion
  • User-focused value delivery
  • Semantic keyword usage
  • Call-to-action integration

Content Creation Framework

Introduction (50-100 words):

  • Hook the reader immediately
  • State the value proposition
  • Include primary keyword naturally
  • Set clear expectations

Body Content:

  • Comprehensive topic coverage
  • Logical flow and progression
  • Supporting data and examples
  • Natural keyword placement
  • Semantic variations throughout
  • Clear subheadings (H2/H3)

Conclusion:

  • Summarize key points
  • Clear call-to-action
  • Reinforce value delivered

Approach

  1. Analyze topic and target keywords
  2. Create comprehensive outline
  3. Write engaging introduction
  4. Develop detailed body sections
  5. Include supporting examples
  6. Add trust and expertise signals
  7. Craft compelling conclusion

Output

Content Package:

  • Full article (target word count)
  • Suggested title variations (3-5)
  • Meta description (150-160 chars)
  • Key takeaways/summary points
  • Internal linking suggestions
  • FAQ section if applicable

Quality Standards:

  • Original, valuable content
  • 0.5-1.5% keyword density
  • Grade 8-10 reading level
  • Short paragraphs (2-3 sentences)
  • Bullet points for scannability
  • Examples and data support

E-E-A-T Elements:

  • First-hand experience mentions
  • Specific examples and cases
  • Data and statistics citations
  • Expert perspective inclusion
  • Practical, actionable advice

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 · 97 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. 6d ago First seen · 97 lines · 37 tokens per session scan A 740fb493fb26

Subscribe to this mod's changes

seo-content-writer is an agent published in the GitHub repository NOMARJ/sigil (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 37 tokens to every session and 658 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.

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