commit-message Skill | Agent Skills

commit-message

Analyze git changes and generate context-aware commit messages following Conventional Commits.

Quick Start

# Analyze all changes
python3 .shared/commit-message/scripts/analyze_changes.py --analyze

# Get batch commit suggestions
python3 .shared/commit-message/scripts/analyze_changes.py --batch

# Generate message for specific files
python3 .shared/commit-message/scripts/analyze_changes.py --generate "src/api/*.py"

Commands

| Command | Description | |---------|-------------| | --analyze | Show all changed files with status and categories | | --batch | Suggest how to split changes into multiple commits | | --generate [pattern] | Generate commit message for matching files | | --staged | Only analyze staged changes (default: all changes) |

Commit Types

| Type | Description | Example | |------|-------------|---------| | feat | New feature | feat(api): add user authentication | | fix | Bug fix | fix(db): resolve connection timeout | | refactor | Code restructuring | refactor(utils): simplify helper functions | | docs | Documentation | docs: update README | | test | Tests | test(api): add user endpoint tests | | chore | Maintenance | chore: update dependencies | | style | Formatting | style: fix linting errors |

Batch Commit Workflow

When you have multiple unrelated changes:

Run --batch to see suggested commit groups
Stage files for first commit: git add <files>
Commit with suggested message
Repeat for remaining groups

Grouping Strategy

Files are grouped by:

Directory/Module: src/api/, tests/, docs/
Change Type: Added vs Modified vs Deleted
Semantic Relationship: Related files together

Context-Aware Commit Messages

Note: The analyze_changes.py script provides file grouping and basic suggestions. Use its output as a starting point, then read git diff to understand the actual changes and generate context-aware messages following the examples below.

When generating commit messages, analyze the actual code changes to infer business context. Don't just describe files—describe what the changes accomplish.

Scope Guidelines

The scope should reflect the business module or feature, not just the directory:

| Scope Type | Example | When to Use | |------------|---------|-------------| | Feature/Module | companion, calendar, inbox | Changes to a specific product feature | | Platform | ios, android, web | Platform-specific changes | | Integration | outlook, gmail, slack | Third-party integration changes | | Component | auth, api, db | Core infrastructure changes |

Input/Output Examples

Example 1: New Feature

Input (code changes):
  + src/companion/pages/AvailabilityDetailPage.tsx
  + src/companion/pages/AvailabilityActionsPage.tsx
  + src/companion/components/AvailabilityCard.tsx
  M src/companion/navigation/routes.ts

Output:
  feat(companion): add availability detail and actions pages for ios

  - New AvailabilityDetailPage showing time slot details
  - New AvailabilityActionsPage for booking/canceling
  - AvailabilityCard component for list display
  - Updated navigation routes

Example 2: Bug Fix

Input (code changes):
  M src/integrations/outlook/email_sender.py
  M src/integrations/outlook/auth.py

Output:
  fix(outlook): resolve email sending failures due to token expiration

  Refresh OAuth token before sending when close to expiry

Example 3: Multi-platform Change

Input (code changes):
  M ios/Calendar/CalendarView.swift
  M android/calendar/CalendarFragment.kt
  M web/src/calendar/Calendar.tsx

Output:
  feat(calendar): add week view across all platforms

  Implement consistent week view UI for iOS, Android, and web

Example 4: Chore/Maintenance

Input (code changes):
  M package.json
  M yarn.lock
  M requirements.txt

Output:
  chore(deps): update dependencies to latest versions

Writing Good Descriptions

| Bad (Generic) | Good (Context-Aware) | |-----------------|------------------------| | feat: add new file | feat(payments): add Stripe webhook handler | | fix: fix bug | fix(auth): prevent session timeout on mobile | | chore: update code | chore(ci): reduce build time with parallel jobs | | refactor: refactor utils | refactor(api): extract rate limiting to middleware |

Key Principles

Read the code - Understand what the changes actually do
Identify the feature - What user-facing or system capability is affected?
Be specific - Include relevant details (platform, integration, component)
Use active voice - "add", "fix", "update", not "added", "fixed", "updated"
Keep it concise - First line under 72 characters

Agent Skills: commit-message

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