| name | grammar-check |
| description | Check prose for grammar, spelling, punctuation, agreement, and word-choice mistakes, then return a concise list of issues with line references and suggested fixes. |
Grammar Check
Use this skill when the user asks for a grammar review, proofreading, or a pass focused on mechanics rather than style.
Goals
- Find grammatical errors, spelling mistakes, punctuation problems, subject-verb agreement issues, article usage errors, tense inconsistencies, and awkward constructions that are clearly incorrect.
- Prefer concrete corrections over broad commentary.
- Keep style suggestions separate unless the user explicitly asks for style or readability feedback.
- If the text is already correct, say so briefly and note any minor ambiguities only if they are likely to cause confusion.
Output Format
Return results as a short, structured list.
For each issue, include:
- A markdown link to the line in the file (format:
[Line N](relative/path/to/file.md#LN))
- The original phrase
- A suggested correction
- A brief reason when helpful
Example:
- Line 12: "its a good idea" -> "it's a good idea"
- Missing apostrophe in "it's".
Review Rules
- Focus on grammar first, not tone or voice.
- Do not rewrite the whole document unless the user asks for a full revision.
- Avoid overcorrecting idioms, intentional fragments, or stylistic choices unless they create a clear grammar problem.
- Preserve the author's meaning.
- When multiple fixes are possible, suggest the simplest correct one.
Checklist
Look for:
- Missing or extra articles
- Subject-verb disagreement
- Pronoun reference problems
- Misused apostrophes
- Run-on sentences and fragments
- Incorrect prepositions
- Incorrect verb tense or aspect
- Misplaced modifiers
- Faulty parallelism
- Common spelling mistakes
- Common word-choice errors such as "effect" versus "affect"
Response Tone
- Direct
- Concise
- Specific
- Helpful without being verbose
