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 tenequm/skills --skill impactful-writinggit clone --depth 1 https://github.com/tenequm/skillsWrote 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/tenequm/skills/impactful-writing)<a href="https://agentmods.dev/skills/tenequm/skills/impactful-writing"><img src="https://agentmods.dev/badge/skills/tenequm/skills/impactful-writing/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/tenequm/skills/impactful-writing"><img src="https://agentmods.dev/badge/skills/tenequm/skills/impactful-writing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00053 | $0.02552 |
| Opus 5 | $0.00026 | $0.01276 |
| Sonnet 5 | $0.00011 | $0.00510 |
| Haiku 4.5 | $0.00005 | $0.00255 |
Grade A, and why
impactful-writing 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 12d 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 — 341 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Impactful Writing
Overview
Transform any content into clear, memorable, and actionable text using research-backed principles that work across all platforms and contexts. This skill synthesizes 50+ years of readability research, neuroscience of memory, and platform engagement studies into practical techniques.
Core insight: The same psychological principles drive engagement everywhere - clarity reduces cognitive load, specificity creates memory, and structure enables scanning. Master these universal patterns and apply them to any writing context.
When to Use This Skill
- Writing or editing Twitter/X posts, threads, or social content
- Creating blog posts, Medium articles, or long-form content
- Drafting documentation, README files, or technical writing
- Composing emails, Slack messages, or professional communication
- Writing GitHub comments, PR descriptions, or code reviews
- Creating update messages, announcements, or change logs
- Editing any existing content for clarity and impact
Universal Writing Principles
These evidence-based principles work across all platforms and contexts.
1. Clarity Through Simplicity
Sentence length determines comprehension:
- 14 words: 90%+ reader comprehension
- 25 words: Difficulty begins
- 43 words: <10% comprehension
Target: 15-20 words average, 25 words maximum per sentence.
Word choice matters:
- Simple words process 76% faster than jargon
- Active voice processes 15-20% faster than passive
- Concrete beats abstract (activates sensory brain regions)
2. Structure for Scanning
79% of readers scan rather than read. Design for this reality:
- Front-load key information (inverted pyramid)
- Use descriptive headings every 3-4 paragraphs
- Keep paragraphs to 3-5 sentences maximum
- Use bullet points for 3+ related items
- Optimal line length: 50-75 characters
3. Emotional Resonance
Stories trigger oxytocin release, enabling empathy and memory formation:
- Open with a hook (question, surprising fact, brief story)
- Use sensory, concrete language
- Create curiosity gaps (specific questions readers want answered)
- Close with memorable takeaways (recency effect)
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.
- 12d ago First seen · 341 lines · 53 tokens per session scan A 3784760317d5
impactful-writing is a skill published in the GitHub repository tenequm/skills (36 stars, last pushed today), licensed MIT. It adds 53 tokens to every session and 2,552 once invoked, about $0.0003 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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