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.
npx agentmods add skills/zai-org/synapse/seo-content-writernpx skills add zai-org/Synapse --skill seo-content-writergit clone --depth 1 https://github.com/zai-org/SynapseWrote 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.
[](https://agentmods.dev/skills/zai-org/synapse/seo-content-writer)<a href="https://agentmods.dev/skills/zai-org/synapse/seo-content-writer"><img src="https://agentmods.dev/badge/skills/zai-org/synapse/seo-content-writer.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00194 | $0.03627 |
| Opus 5 | $0.00097 | $0.01813 |
| Sonnet 5 | $0.00039 | $0.00725 |
| Haiku 4.5 | $0.00019 | $0.00363 |
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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 351 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO Content Writer
SEO & GEO Skills Library · 20 skills for SEO + GEO · Install all:
npx skills add aaron-he-zhu/seo-geo-claude-skills
Research · keyword-research · competitor-analysis · serp-analysis · content-gap-analysis
Build · seo-content-writer · geo-content-optimizer · meta-tags-optimizer · schema-markup-generator
Optimize · on-page-seo-auditor · technical-seo-checker · internal-linking-optimizer · content-refresher
Monitor · rank-tracker · backlink-analyzer · performance-reporter · alert-manager
Cross-cutting · content-quality-auditor · domain-authority-auditor · entity-optimizer · memory-management
This skill creates search-engine-optimized content that ranks well while providing genuine value to readers. It applies proven SEO copywriting techniques, proper keyword integration, and optimal content structure.
When to Use This Skill
- Writing blog posts targeting specific keywords
- Creating landing pages optimized for search
- Developing pillar content for topic clusters
- Writing product descriptions for e-commerce
- Creating service pages for local SEO
- Producing how-to guides and tutorials
- Writing comparison and review articles
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 351 lines · 194 tokens per session scan A 158b04db7f21
seo-content-writer is a skill published in the GitHub repository zai-org/Synapse (468 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 194 tokens to every session and 3,627 once invoked, about $0.0010 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 2026-08-30.
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