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 skills add NickCrew/Claude-Cortex --skill blog-postgit clone --depth 1 https://github.com/NickCrew/Claude-CortexWrote 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/nickcrew/claude-cortex/blog-post)<a href="https://agentmods.dev/skills/nickcrew/claude-cortex/blog-post"><img src="https://agentmods.dev/badge/skills/nickcrew/claude-cortex/blog-post/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.
<a href="https://agentmods.dev/skills/nickcrew/claude-cortex/blog-post"><img src="https://agentmods.dev/badge/skills/nickcrew/claude-cortex/blog-post.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00070 | $0.02661 |
| Opus 5.5 | $0.00028 | $0.01064 |
| Sonnet 5.5 | $0.00014 | $0.00532 |
| Haiku 4.5 | $0.00007 | $0.00266 |
Grade A, and why
blog-post 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 1mo 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 — 236 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blog Post
Overview
This skill helps you write compelling, well-structured blog posts that engage readers from the opening hook to the final call to action. It covers SEO fundamentals, headline formulas, tone matching to your brand voice, and the right word count for your goal—whether you're publishing a punchy 800-word opinion piece or a comprehensive 2,000-word tutorial. The output is publication-ready content, not a rough draft.
When to Use
- Writing how-to tutorials and step-by-step guides
- Drafting opinion or thought-leadership articles
- Creating listicles and roundup posts
- Producing SEO-targeted content around a keyword
- Repurposing research or notes into readable web content
- Writing content marketing pieces that drive traffic
When NOT to Use
- Academic or peer-reviewed papers (use
academic-essayskill instead) - News articles requiring verified, real-time information
- Press releases (distinct format and distribution requirements)
- Social media posts (use
social-mediaskill instead) - Technical documentation (use
technical-writerskill instead)
Quick Reference
| Task | Approach |
|---|---|
| Hook | Start with a stat, question, or bold claim in the first 2 sentences |
| Headline | Use formulas: "How to X", "N Ways to Y", "Why Z" |
| Word count | Tutorial: 1,200–2,000 words; Opinion: 800–1,200 words; Listicle: 1,000–1,500 words |
| SEO | Include primary keyword in title, first paragraph, one H2, and meta description |
| Paragraphs | Keep to 3–4 sentences max for web readability |
| CTA | One clear call-to-action at the end; optionally one mid-post |
| Subheadings | Every 200–300 words to break up the wall of text |
Instructions
-
Identify the post type and goal. Determine whether this is a tutorial, opinion, listicle, or case study. Clarify the target audience (beginner vs. expert), the primary keyword if SEO matters, and the desired word count range.
-
Craft the headline first. Use a proven formula:
- How-to: "How to [Achieve Result] in [Timeframe/Steps]"
- Listicle: "[Number] [Adjective] Ways to [Achieve Goal]"
- Opinion: "Why [Counterintuitive Claim] Is Actually [Positive Outcome]"
- Question: "Is [Common Belief] Really [Worth It/True]?"
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.
- 1mo ago First seen · 236 lines · 70 tokens per session scan A ffc7176d6bca
blog-post is a skill published in the GitHub repository NickCrew/Claude-Cortex (56 stars, last pushed 3mo ago), licensed MIT. It adds 70 tokens to every session and 2,661 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-03.
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