Logging & Observability Skill

Activate when working with logging systems, distributed tracing, debugging, monitoring, or any observability-related tasks across applications.

1. Logging Best Practices

Use appropriate log levels for different severity:

Level	Severity	When to Use
DEBUG	Low	Development only - detailed info, variable states, control flow. Use sparingly in production.
INFO	Low	Important application lifecycle events - startup, shutdown, config loaded, user actions, key state changes.
WARN	Medium	Recoverable issues - deprecated usage, resource constraints, unexpected but handled conditions. Investigate later.
ERROR	High	Unrecoverable problems - exceptions, failed operations, missing required data. Requires immediate attention.
FATAL	Critical	System-level failures - abort conditions, out of memory, unrecoverable state. System may crash.