| name | best-practices-extractor |
| description | Extract and generate coding best practices from PR review comments. Use when the user asks to "extract best practices", "analyze PR comments", "generate coding standards", "create best practices from PRs", or "update coding guidelines from reviews". |
| version | 1.0.0 |
Best Practices Extractor
Extract coding best practices from PR review comments and codebase analysis to generate .claude/best-practices/ documentation.
When to Use
- Initial setup of coding standards for a project
- Regular updates to capture new team feedback
- Analyzing PR comments to document patterns
- Generating best practices from code review history
Extraction Methods
All outputs are saved to .claude/pr-review-comments/.
Method 1: Incremental Update (Recommended)
For regular updates - fast and tracks state:
cd plugin/skills/best-practices-extractor
bash scripts/incremental_update.sh OWNER REPO_NAME
First run does full extraction; subsequent runs fetch only new PRs.
Output: .claude/pr-review-comments/{repo}_inline_comments.ndjson
Method 2: Full Extraction
For first-time setup or comprehensive analysis:
bash scripts/extract_pr_comments.sh REPO_NAME
Output: .claude/pr-review-comments/{repo}_inline_comments.ndjson
Method 3: Sort by File Tree
Organize extracted comments by directory structure:
bash scripts/sort_comments_by_filetree.sh .claude/pr-review-comments/{repo}_inline_comments.ndjson
Output: .claude/pr-review-comments/sorted/
Generating Best Practices
After extracting comments:
- Identify patterns - Look for recurring feedback themes
- Categorize - Group by type (naming, error-handling, type-safety, etc.)
- Create documentation - Generate
.claude/best-practices/ files
Output Structure
.claude/best-practices/
├── README.md # Index
├── naming-conventions.md
├── error-handling.md
├── type-safety.md
├── testing.md
└── ...
Guideline Format
Each guideline should include:
## [Number]. [Title]
**Guideline:** [Clear statement]
**Why:** [Impact explanation]
**Example:**
```typescript
// Good
{example}
// Bad
{counter_example}
Source: PR #{number}
## Prerequisites
- **GitHub CLI (`gh`)**: Authenticated - check with `gh auth status`
- **jq**: JSON processor - check with `jq --version`
## Integration
This skill **generates** best practices. The `code-reviewer` agent and `/4_review` command **validate** against them.
Workflow:
1. Extract PR comments (this skill)
2. Analyze and generate `.claude/best-practices/`
3. Reviews automatically validate against best practices
## Additional Resources
- **`references/default-categories.md`** - Example category definitions
- **`references/scripts-guide.md`** - Detailed script documentation
