Grammar and Proofreading skills for Claude Code and Codex
Grammar and proofreading skills check text against rules and return targeted fixes: grammar, logic and flow errors, line-level copyediting, house style sheets, correct punctuation, and documentation writing guidelines. They fix what is wrong without rewriting your whole draft.
Highest-scoring grammar and proofreading skills in the October 22, 2026 snapshot: line-editing from danjdewhurst/story-skills (90/100). Scores come from the Suede Skill Check.
- 6 listed skills
- 5 repositories
- 1 with full pages
2 from official publishers. 0 bundle scripts. 0 connect to an outside service. Listed in Writing and Editing (5), Marketing and SEO (1).
All 6 grammar and proofreading skills
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| Skill | Repository | What it does |
|---|---|---|
| line-editing 90/100 · A | danjdewhurst/story-skills | Edits and polishes prose at the line level, covering copyediting, proofreading, tightening sentences, grammar and punctuation checks, and dialogue punctuation. |
| copy-editing 88/100 · B | coreyhaines31/marketingskills | When the user wants to edit, review, or improve existing marketing copy, or refresh outdated content. Also use when the user mentions 'edit this… |
| em-dash 77/100 · C | github/awesome-copilot | Expert on the history, origin, and correct use of the em dash. Use when writing or reviewing code, comments, or data files to avoid em and en… |
| grammar-check 81/100 · B | phuryn/pm-skills | Identify grammar, logical, and flow errors in text and suggest targeted fixes without rewriting the entire text. Use when proofreading content… |
| voice-style 90/100 · A | danjdewhurst/story-skills | This skill should be used when the user asks to "create a style sheet", "style guide", "house style", "keep the voice consistent", "voice drift"… |
| writing-guidelines 72/100 · C | vercel-labs/agent-skills | Review docs/prose for Writing Guidelines compliance. Use when asked to "review my docs", "check writing style", "audit prose", "review docs voice… |
How to choose grammar and proofreading skills
grammar-check suits short business text where you want minimal changes; line-editing suits fiction and long-form prose; writing-guidelines and voice-style enforce a written style guide you already have.
Ask for changes with reasons. Every skill here can return a list of edits instead of a rewritten file, which keeps your voice intact and makes review quick.
These skills are plain Markdown and need no credentials or network access.
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