proofread

A Korean proofreading skill that corrects objective language errors such as spelling, spacing, standard-word usage, foreign-word spelling, punctuation, and clear grammatical mistakes.

In plain words
What is it for?
It helps proofread Korean writing, including spacing, common word confusions, nonstandard words, foreign terms, punctuation, and subject–predicate agreement.
Why use it?
It fixes rule-based errors while preserving the writer's meaning, tone, level of formality, and sentence style. Uncertain cases are marked for review instead of being changed blindly.

Skill for Claude CodeCodex

Part of the yoonmoon plugin — 6 skills shipped together

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/amondnet/yoonmoon/proofread
Any agent
npx skills add amondnet/yoonmoon --skill proofread
Clone the repo
git clone --depth 1 https://github.com/amondnet/yoonmoon

Made for: Claude Code, Codex.

Or install yoonmoon, the plugin that ships this one along with the rest of its 6 skills.

Per session 283 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,667 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 $0.00283 $0.01667
Opus 5 $0.00142 $0.00834
Sonnet 5 $0.00057 $0.00333
Haiku 4.5 $0.00028 $0.00167

Measured 3d ago against content hash 3b27db676c2d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

proofread 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.

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/proofread/SKILL.md · 93 lines

What it actually says

교정·교열(proofread) — 한국어 어문 규범 교정

윤문(humanize·translate-polish)이 더 좋게 다듬는 도구라면, 이 스킬은 틀린 것을 맞게 고치는 도구다. 규범으로 분류되지 않는 어색함은 손대지 않는다(그건 윤문의 일이다).

  • references/proofreading-rules.md — 맞춤법·띄어쓰기·표준어·외래어·문장부호·비문 6대 분류와 자주 틀리는 항목·교정 원칙. Phase 1~2에서 읽는다.
  • 뜻·문체·격식 불변: 어투·높임 수준·강조·문장 구조는 그대로. 오직 규범 오류만 교정.
  • 과교정 금지: 규정상 허용되는 복수 표기(원칙/허용)는 틀린 게 아니다. 일관성만 통일한다.
  • 불확실하면 표시: 사이시옷·두음·띄어쓰기 허용처럼 판단이 갈리면 고치지 말고 '확인 요망'으로 표시.
  1. 한 줄 상태완료. 교정 N건 (맞 a · 띄 b · 표 c · 외 d · 부 e · 문 f) / 확인 요망 M건

  2. 교정본 — 마크다운 코드블록 또는 인용으로 전체 제시.

  3. 교정 내역 표

    # 분류 원문 → 교정 근거
    1 됬다 → 됐다 '되어'='돼' (한글 맞춤법)
    2 할수있다 → 할 수 있다 의존명사 '수' 띄어쓰기
  4. (있으면) 확인 요망 — 판단이 갈려 고치지 않고 표시만 한 항목(사용자 선택 요청).

Files

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.

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. 3d ago First seen · 93 lines · 283 tokens per session scan A 3b27db676c2d

Subscribe to this mod's changes

proofread is a skill published in the GitHub repository amondnet/yoonmoon (12 stars, last pushed 12d ago), licensed MIT. It adds 283 tokens to every session and 1,667 once invoked, about $0.0014 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.

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