hashiiiii-write-en

hashiiiii-write-en is a skill for Claude Code from hashiiiii/rules-for-ai. It costs 26 tokens per session (574 once invoked), scanned A, original, MIT.

A writing guide for producing and reviewing English prose. It sets rules for clear wording, accurate meaning, suitable tone, and preservation of technical details.

In plain words
What is it for?
Use it for documentation, messages, articles, and other English writing or editing tasks.
Why use it?
It helps prevent unclear explanations, invented claims, and accidental changes to requirements or code-related text. It also encourages short, direct sentences.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the rules-for-ai plugin — 7 skills, 2 hooks shipped together

Good fit Use it for documentation, messages, articles, and other English writing or editing tasks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hashiiiii/rules-for-ai/hashiiiii-write-en
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.

Any agent
npx skills add hashiiiii/rules-for-ai --skill hashiiiii-write-en
Clone the repo
git clone --depth 1 https://github.com/hashiiiii/rules-for-ai

Made for: Claude Code.

Or install rules-for-ai, the plugin that ships this one along with the rest of its 7 skills, 2 hooks.

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 hashiiiii-write-en

README.md
[![agentmods](https://agentmods.dev/badge/skills/hashiiiii/rules-for-ai/hashiiiii-write-en/github.svg)](https://agentmods.dev/skills/hashiiiii/rules-for-ai/hashiiiii-write-en)
Your own site
<a href="https://agentmods.dev/skills/hashiiiii/rules-for-ai/hashiiiii-write-en"><img src="https://agentmods.dev/badge/skills/hashiiiii/rules-for-ai/hashiiiii-write-en/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.

agentmods 80×15 button for hashiiiii-write-en

Your own site · 80×15
<a href="https://agentmods.dev/skills/hashiiiii/rules-for-ai/hashiiiii-write-en"><img src="https://agentmods.dev/badge/skills/hashiiiii/rules-for-ai/hashiiiii-write-en.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 574 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00026 $0.00574
Opus 5 $0.00013 $0.00287
Sonnet 5 $0.00005 $0.00115
Haiku 4.5 $0.00003 $0.00057

Measured 2d ago against content hash 0a3be60d65d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

hashiiiii-write-en 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 2d 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.

skills/hashiiiii-write-en/SKILL.md · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

English Writing

Write a simple draft. Then revise its language and structure. Keep the requested audience, tone, format, and length.

Meaning

  • Preserve facts, quantities, conditions, exceptions, uncertainty, and requirement strength. Do not turn a limited observation into a general claim.
  • Do not invent causes, sources, opinions, or personal experience.
  • Keep code, commands, identifiers, paths, URLs, quotations, and product names exact unless the task requires their change.
  • Use one term per meaning. Do not merge distinct concepts to reduce vocabulary.

Draft

  • Start with the useful point. Give each sentence one main idea and each paragraph one topic.
  • Use familiar words and complete grammar. If the reader needs help with a technical term, explain it.
  • Use verbs for actions. Break long noun chains into phrases with prepositions.
  • Do not invent compounds with hyphens to shorten explanations. Use verbs or prepositions, such as "data serialized as text" instead of "text-serialized data". Keep established terms and hyphens needed to prevent misreading.
  • If the actor is known, use active voice. Systems can act. Do not invent a person to supply a subject.
  • For instructions, give one action per sentence.
  • In technical text, limit instructions to 20 words per sentence and explanations to 25. Count each code span as one word.

Revise

  • Delete empty emphasis and stock phrases such as "seamlessly", "game-changing", and "it is worth noting".
  • Replace vague praise with supplied facts. If there is no fact to retain, delete the praise.
  • State the point directly. Remove decorative contrasts, rhetorical questions, repeated conclusions, and em dashes from prose.
  • Keep comparisons, qualifications, and courtesy that serve the reader.
  • If headings or lists help navigation or comparison, use them. Do not force three items, equal paragraphs, or punchy endings.

Check

Before delivery:

  1. Compare each claim with the source. Check who acts, what they act on, quantities, timing, exceptions, uncertainty, requirement strength, and exact technical text.
  2. Compare scope words such as "one", "some", "all", and "only". Correct any change in their meaning. Do not infer links between nearby facts.
  3. Check the longest sentences, terms, repeated patterns, and requested length. Correct each defect.

Read the full file on GitHub · 47 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. 2d ago Changed · +1 lines 0a3be60d65d8
  2. 3d ago First seen · 46 lines · 26 tokens per session scan A f3de37b0eb2b

Subscribe to this mod's changes

hashiiiii-write-en is a skill published in the GitHub repository hashiiiii/rules-for-ai (10 stars, last pushed 3d ago), licensed MIT. It adds 26 tokens to every session and 574 once invoked, about $0.0001 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 2026-09-06.