simplify-prose

simplify-prose is a skill for Claude Code, Codex from paultyng/skill-issue. It costs 151 tokens per session (1,985 once invoked), scanned A, original, MIT.

A writing guide for clear technical text, based on Simplified Technical English, a controlled form of English used in safety-critical manuals. It gives rules for making instructions and explanations easier to read on the first pass.

In plain words
What is it for?
Use it to rewrite documentation, READMEs, runbooks, error messages, release notes, incident reports, API guides, or system prompts.
Why use it?
It removes long sentences, unnecessary wording, vague language, and inconsistent terms that can cause readers to misunderstand technical information.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/paultyng/skill-issue/simplify-prose
Any agent
npx skills add paultyng/skill-issue --skill simplify-prose
Clone the repo
git clone --depth 1 https://github.com/paultyng/skill-issue

Made for: Claude Code, Codex.

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 simplify-prose

README.md
[![agentmods](https://agentmods.dev/badge/skills/paultyng/skill-issue/simplify-prose.svg)](https://agentmods.dev/skills/paultyng/skill-issue/simplify-prose)
Your own site
<a href="https://agentmods.dev/skills/paultyng/skill-issue/simplify-prose"><img src="https://agentmods.dev/badge/skills/paultyng/skill-issue/simplify-prose.svg" alt="Measured on agentmods" height="20"></a>
Per session 151 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,985 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00151 $0.01985
Opus 5 $0.00076 $0.00992
Sonnet 5 $0.00030 $0.00397
Haiku 4.5 $0.00015 $0.00198

Measured 4d ago against content hash 3cb23250b5f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

simplify-prose 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 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.

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/simplify-prose/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Simplify Prose

Rewrite or check reader-facing technical text with the mechanical core of ASD-STE100 Simplified Technical English (STE), the controlled language aerospace and defense manufacturers use for maintenance manuals. The rules exist so a tired reader who is not a native English speaker cannot misread an instruction. They remove the usual signs of AI slop as a side effect: long sentences, synonym rotation, hedges, filler, decorative clauses.

Write for that tired reader. Each sentence must survive one read.

Scope: where this skill applies

Scope-split with the terse-output rule:

  • This skill owns reader-facing technical text (docs, READMEs, runbooks, error messages, release notes, incident reports, agent/system prompts). Keep complete grammar — articles, "that", no telegraph style, no contractions — for non-native readers.
  • terse-output owns chat replies, PR/review comments, commit messages, where aggressive word-dropping is right.
  • match-voice owns marketing, brand, and personal-voice writing. Do not apply this skill there; STE deletes persuasion by design (see Limit).

The modal ladder, slop substitutions, and condition-before-command are shared with terse-output. The completeness rules (keep articles, keep "that", no contractions) are this skill's alone.

Workflow

  1. Classify each passage as procedural or descriptive. Every other rule depends on this.
  2. Fix vocabulary before drafting. Pick ONE verb for the check/verify/confirm concept and ONE noun for the config/settings concept. Use no other word for these concepts in the whole document.
  3. Apply the core rules (below).
  4. Leave untouchables exact — code, identifiers, commands, quoted errors.
  5. Run the self-check before delivering. Not optional.

When asked to CHECK text instead of writing it, report each violation as: the offending text, the problem, a compliant rewrite. Use references/checklist.md for the searchable pass.

Classify first

Read the full file on GitHub · 114 lines

Files

What ships with it

2 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.

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. 4d ago First seen · 114 lines · 151 tokens per session scan A 3cb23250b5f2

Subscribe to this mod's changes

simplify-prose is a skill published in the GitHub repository paultyng/skill-issue (9 stars, last pushed 23d ago), licensed MIT. It adds 151 tokens to every session and 1,985 once invoked, about $0.0008 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 2026-08-31.