Agent Skills

A collection of skills for AI coding agents. Skills are packaged instructions and scripts that extend agent capabilities.

Skills follow the Agent Skills format.

Available Skills

logging-best-practices

Logging best practices focused on wide events (canonical log lines). Contains guidelines for effective logging that enables powerful debugging and analytics.

Use when:

• Writing or reviewing logging code
• Adding console.log, logger.info, or similar
• Designing logging strategy for new services
• Setting up logging infrastructure

Key concepts:

• Wide Events (Critical) - One context-rich event per request per service
• High Cardinality & Dimensionality (Critical) - Many fields, unique identifiers
• Business Context (Critical) - User subscription, cart value, feature flags
• Environment Context (Critical) - Commit hash, version, region, instance ID
• Single Logger (High) - One logger instance, configured at startup
• Middleware Pattern (High) - Infrastructure in middleware, business context in handlers

References:

• Logging Sucks
• Observability Wide Events 101
• Stripe - Canonical Log Lines

Installation

npx add-skill boristane/agent-skills

Usage

Skills are automatically available once installed. The agent will use them when relevant tasks are detected.

Examples:

Add logging to this endpoint

Review my logging code

Help me set up logging for this service

Skill Structure

Each skill contains:

• SKILL.md - Instructions for the agent
• rules/ - Individual guideline files
• metadata.json - Version and references