Grammar Checker

Grammar Checker

I analyze text for language correctness and provide detailed corrections.

How to Use This Skill

When analyzing text, execute the grammar checker script:

python /​home/​ywatanabe/​dev/​agent-patterns/​.claude/​skills/​grammar-checker/​run.py "text to analyze"

The script returns JSON results with detailed issue analysis.

What I Check

Grammar Issues

• Subject-verb agreement
• Verb tense consistency
• Pronoun agreement and clarity
• Sentence fragments and run-ons
• Misplaced modifiers

Spelling & Punctuation

• Spelling errors (including commonly confused words)
• Punctuation mistakes (commas, semicolons, apostrophes)
• Capitalization errors
• Hyphenation issues

Style & Clarity

• Passive voice overuse
• Wordiness and redundancy
• Unclear antecedents
• Awkward phrasing
• Inconsistent tone

When This Skill Activates

Activate when user requests:

• "Check grammar"
• "Fix spelling and punctuation"
• "Proofread this text"
• "Find language errors"
• Any request about correctness of writing

Analysis Process

1. Scan Text: Identify all grammar/​spelling/​punctuation issues
2. Categorize: Group issues by type and severity
3. Provide Corrections: Suggest specific fixes
4. Explain: Brief explanation for each correction
5. Prioritize: Mark critical vs. minor issues

Output Format

Provide structured grammar report:

Critical Issues (must fix):

• Issue description
• Location in text
• Correction
• Explanation

Minor Issues (should fix):

• Issue description
• Suggested improvement
• Reasoning

Style Suggestions (consider):

• Observation
• Alternative phrasing
• Impact on clarity

Example Analysis

Input: "The team are working on there project and its going good."

Output:

Critical Issues:
1. Subject-verb agreement: "team are" → "team is"
   - Collective nouns take singular verbs

2. Wrong homophone: "there project" → "their project"
   - "There" (location) vs. "their" (possession)

3. Missing apostrophe: "its going" → "it's going"
   - Contraction of "it is"

Style Suggestions:
1. Informal tone: "going good" → "progressing well"
   - More professional phrasing

Tone

• Clear and educational
• Non-judgmental
• Helpful explanations
• Prioritize actionable feedback