Generate descriptive commit messages by analyzing git diffs. Use when the user asks for help writing commit messages or reviewing staged changes.
Analyze staged changes and generate commit message:
# View staged changes
git diff --staged
# Generate commit message based on changes
# (Claude will analyze the diff and suggest a message)
Follow conventional commits format:
<type>(<scope>): <description>
[optional body]
[optional footer]
Feature commit:
feat(auth): add JWT authentication
Implement JWT-based authentication system with:
- Login endpoint with token generation
- Token validation middleware
- Refresh token support
Bug fix:
fix(api): handle null values in user profile
Prevent crashes when user profile fields are null.
Add null checks before accessing nested properties.
Refactor:
refactor(database): simplify query builder
Extract common query patterns into reusable functions.
Reduce code duplication in database layer.
Review what's being committed:
# Show files changed
git status
# Show detailed changes
git diff --staged
# Show statistics
git diff --staged --stat
# Show changes for specific file
git diff --staged path/to/file
DO:
DON'T:
When committing multiple related changes:
refactor(core): restructure authentication module
- Move auth logic from controllers to service layer
- Extract validation into separate validators
- Update tests to use new structure
- Add integration tests for auth flow
Breaking change: Auth service now requires config object
Frontend:
feat(ui): add loading spinner to dashboardfix(form): validate email formatBackend:
feat(api): add user profile endpointfix(db): resolve connection pool leakInfrastructure:
chore(ci): update Node version to 20feat(docker): add multi-stage buildIndicate breaking changes clearly:
feat(api)!: restructure API response format
BREAKING CHANGE: All API responses now follow JSON:API spec
Previous format:
{ "data": {...}, "status": "ok" }
New format:
{ "data": {...}, "meta": {...} }
Migration guide: Update client code to handle new response structure
git diff --stagedUse git add -p for selective staging:
# Stage changes interactively
git add -p
# Review what's staged
git diff --staged
# Commit with message
git commit -m "type(scope): description"
Fix the last commit message:
# Amend commit message only
git commit --amend
# Amend and add more changes
git add forgotten-file.js
git commit --amend --no-edit