A controlled-English rewriting guide for text that software agents or other automated systems must parse. ASD-STE100 is a technical writing standard designed to reduce ambiguous words and sentence structures.

Use it to rewrite dense or unclear tool descriptions, error messages, inter-agent instructions, system prompts, and reports in simpler, more precise English.

It helps prevent an agent or downstream tool from misreading instructions, errors, prompts, or status messages when no person will resolve the ambiguity.

asd-ste100 — Skill for Claude Code by CHENyiru3/AI-Skills-Collections

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 CHENyiru3/AI-Skills-Collections --skill asd-ste100

Clone the repo

git clone --depth 1 https://github.com/CHENyiru3/AI-Skills-Collections

Made for: Claude Code.

Or install writing, the plugin that ships this one along with the rest of its 14 skills.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/chenyiru3/ai-skills-collections/asd-ste100/github.svg)](https://agentmods.dev/skills/chenyiru3/ai-skills-collections/asd-ste100)

Your own site

<a href="https://agentmods.dev/skills/chenyiru3/ai-skills-collections/asd-ste100"><img src="https://agentmods.dev/badge/skills/chenyiru3/ai-skills-collections/asd-ste100/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/chenyiru3/ai-skills-collections/asd-ste100"><img src="https://agentmods.dev/badge/skills/chenyiru3/ai-skills-collections/asd-ste100.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 483 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 94% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00047	$0.00483
Opus 5.5	$0.00019	$0.00193
Sonnet 5.5	$0.00009	$0.00097
Haiku 4.5	$0.00005	$0.00048

Measured 3d ago against content hash ee77c5e3c7e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

asd-ste100 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 3d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/ste-lint.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

94% identical to asd-ste100 — 159 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills-market/writing/technical/asd-ste100/SKILL.md · 41 lines

What it actually says

STE-Inspired Clarity

Read for meaning before rewriting. Preserve facts, actor, conditions, exceptions, units, scope and confidence. “May have failed” must not become “failed”; a clearer sentence must not invent a cause, measurement or certainty.

For a procedure/error/tool contract, use strict structural guidance: one instruction per sentence, an explicit actor/object where ambiguity matters, consistent names, short noun clusters and unambiguous conditions. Aim for at most 20 words in an instruction and 25 in a description, one topic and at most six sentences per paragraph. Split semicolon chains and sequences into clear sentences or lists.

For explanatory prose, use those techniques as clarity aids rather than forcing an alien voice. Prefer direct verbs and familiar vocabulary; avoid rotating names for the same entity. Keep necessary domain terms and define them when needed. Simple tenses/active voice help when they preserve temporal meaning and agency; retain a compound tense or passive construction when simplifying loses information.

The official approved dictionary is not bundled. Lexical choices are heuristic; this skill cannot certify ASD-STE100 compliance. For exact controlled-language requirements, use the official standard and an appropriate domain glossary. Read references/writing-rules.md for rule categories and sources, or examples/before-after.md for a relevant case.

scripts/ste-lint.py is an optional structural aid, not proof of meaning or standards compliance. Inspect its help for file/stdin, JSON, baseline and rule controls. Its hard/advisory categories describe local tooling, not new acceptance policy. Do not remove hedges merely to silence a length/style warning.

Return rewritten text alone by default. On request, show original/revised wording and the relevant rule. Briefly explain an unchanged phrase only when simplifying it would lose necessary precision. If already clear, preserve it. Stop when ambiguity is resolved, not when the text is shortest or every heuristic has been satisfied.

Files

What ships with it

6 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.

3d ago Changed · -99 lines · -52 tokens per session ee77c5e3c7e3
10d ago First seen · 140 lines · 99 tokens per session scan A 39940a0db3d1

Subscribe to this mod's changes

asd-ste100 is a skill published in the GitHub repository CHENyiru3/AI-Skills-Collections (2 stars, last pushed 3d ago), licensed MIT. It adds 47 tokens to every session and 483 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to asd-ste100, differing in 159 lines, and is treated as a copy.

Building agents Writing and docs

asd-ste100 next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
asd-ste100CHENyiru3/AI-Skills-Collections	Skill	2	3d ago	MIT	A	47	Claude Code
imagegenopenai/codex	Skill	135k	today	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	100k	today	Apache-2.0	A	19	Claude Code
browser-automationopenclaw/openclaw	Skill	394k	today	MIT	A	36	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	80k	7d ago	MIT	A	200	Claude Code, Codex
next-cache-components-adoptionvercel/next.js	Skill	144k	today	MIT	A	95	Claude Code
chat-pet-sprite-creationmicrosoft/vscode	Skill	195k	today	MIT	A	53	Claude Code, Codex