Use when debugging Rails issues - provides Rails-specific debugging tools (logs, console, byebug, SQL logging) integrated with systematic debugging process
Provides Rails-specific debugging tools (logs, console, byebug, SQL logging) integrated with systematic debugging process. Use when investigating Rails errors, test failures, or performance issues to systematically identify root causes and verify fixes.
/plugin marketplace add zerobearing2/rails-ai/plugin install rails-ai@rails-ai-marketplaceThis skill inherits all available tools. When active, it can use any tool Claude has access to.
# Development logs
tail -f log/development.log
# Production logs (Kamal)
kamal app logs --tail
# Filter by severity
grep ERROR log/production.log
# Filter by request
grep "Started GET" log/development.log
# Start console
rails console
# Or production console (Kamal)
kamal app exec 'bin/rails console'
# Test models
user = User.find(1)
user.valid? # Check validations
user.errors.full_messages # See errors
# Test queries
User.where(email: "test@example.com").to_sql # See SQL
User.includes(:posts).where(posts: { published: true }) # Avoid N+1
# Add to any Rails file
def some_method
byebug # Execution stops here
# ... rest of method
end
# Byebug commands:
# n - next line
# s - step into method
# c - continue execution
# pp variable - pretty print
# var local - show local variables
# exit - quit debugger
# In rails console or code
ActiveRecord::Base.logger = Logger.new(STDOUT)
# Now all SQL queries print to console
User.all
# => SELECT "users".* FROM "users"
# List all routes
rails routes
# Filter routes
rails routes | grep users
# Show routes for controller
rails routes -c users
# Migration status
rails db:migrate:status
# Show schema version
rails db:version
# Check pending migrations
rails db:abort_if_pending_migrations
# Run one-liner
rails runner "puts User.count"
# Run script
rails runner scripts/investigate_users.rb
# Production environment
RAILS_ENV=production rails runner "User.pluck(:email)"
# Run single test with backtrace
rails test test/models/user_test.rb --verbose
# Run with warnings enabled
RUBYOPT=-W rails test
# Run with seed for reproducibility
rails test --seed 12345
User Load (0.1ms) SELECT * FROM users WHERE id = 1
Post Load (0.1ms) SELECT * FROM posts WHERE user_id = 1
Post Load (0.1ms) SELECT * FROM posts WHERE user_id = 2
Post Load (0.1ms) SELECT * FROM posts WHERE user_id = 3
# Bad
users.each { |user| user.posts.count }
# Good
users.includes(:posts).each { |user| user.posts.count }
# Check migration status
rails db:migrate:status
# Run pending migrations
rails db:migrate
# Or rollback and retry
rails db:rollback
rails db:migrate
Official Documentation:
Gems & Libraries:
Tools:
This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.