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 SerenecoTech/agent-skills --skill descriptive-writinggit clone --depth 1 https://github.com/SerenecoTech/agent-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/serenecotech/agent-skills/descriptive-writing)<a href="https://agentmods.dev/skills/serenecotech/agent-skills/descriptive-writing"><img src="https://agentmods.dev/badge/skills/serenecotech/agent-skills/descriptive-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/serenecotech/agent-skills/descriptive-writing"><img src="https://agentmods.dev/badge/skills/serenecotech/agent-skills/descriptive-writing.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 | $0.00068 | $0.03097 |
| Opus 5 | $0.00034 | $0.01548 |
| Sonnet 5 | $0.00014 | $0.00619 |
| Haiku 4.5 | $0.00007 | $0.00310 |
Grade B, and why
descriptive-writing scanned grade B with 1 finding 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.
Strips warnings and disclaimersmediumAnti-refusal
Omitting safety caveats hides risk from the user and is a common jailbreak preamble.
- **Don't moralize or append safety padding.** "It is crucial to approach this topic with sensitivity" and "We must remember the human cost" are AI-generated moral wrappers. State the facts. If the facts are serious, the How it starts
The opening of the file, as written. The whole thing — 224 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Descriptive Writing: Explanations a Reader Can Use
Core Principle
Explanatory prose fails its reader when it regresses to the mean: specifics replaced with generalities, importance asserted with stock phrases, and the texture of real facts smoothed away. The result reads like a press release about everything, and the reader finishes it knowing nothing they can act on.
Useful explanation is specific, uneven, and comfortable with imperfection. It says "the bridge opened in 1973" rather than "the bridge stands as a testament to the region's rich engineering heritage." It says "I don't know" rather than "while specific details remain limited in available sources."
The method is concrete detail and restraint. Say what happened. Skip the commentary about why it matters. Trust the reader to draw their own conclusions.
The Five Rules
1. Be specific, not significant
State facts without editorializing their importance. Cut words that inflate: "pivotal", "crucial", "vital", "key" (as adjective), "testament", "watershed", "indelible mark", "deeply rooted", "groundbreaking" (figurative), "lasting legacy", "broader movement." Let facts carry their own weight.
Before:
The 1987 renovation played a pivotal role in shaping the building's enduring legacy, serving as a testament to the community's deeply rooted commitment to architectural preservation.
After:
The building was renovated in 1987. The city council funded the project after the roof collapsed during a storm.
The second version is more informative. The first version says the renovation was important without saying why.
2. Use plain verbs
Write "is", "are", "has" instead of "serves as", "stands as", "represents." Write "shows" not "showcases", "stresses" not "underscores", "has" not "boasts" or "features." Plain copulas are the backbone of clear prose. Don't replace them with verbs that sound more impressive but mean the same thing.
Better yet, find the active verb hiding inside the noun phrase. "The tool serves as a validation mechanism" becomes "The tool is a validation mechanism" (better), which becomes "The tool validates inputs" (best).
What ships with it
1 file 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.
- 4d ago First seen · 224 lines · 68 tokens per session scan B b5e47de9541d
descriptive-writing is a skill published in the GitHub repository SerenecoTech/agent-skills (2 stars, last pushed 5d ago), licensed MIT. It adds 68 tokens to every session and 3,097 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.
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