aj-geddes/useful-ai-prompts/log-analysis

Name: log-analysis
Author: aj-geddes

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Analyze application and system logs to identify errors, patterns, and root causes. Use log aggregation tools and structured logging for effective debugging.

Install

npx vskill@latest install aj-geddes/useful-ai-prompts/log-analysis

SKILL.md

Overview

Logs are critical for debugging and monitoring. Effective log analysis quickly identifies issues and enables root cause analysis.

When to Use

Troubleshooting errors
Performance investigation
Security incident analysis
Auditing user actions
Monitoring application health

Quick Start

Minimal working example:

javascript

// Good: Structured logs (machine-readable)
logger.info({
  level: 'INFO',
  timestamp: '2024-01-15T10:30:00Z',
  service: 'auth-service',
  user_id: '12345',
  action: 'user_login',
  status: 'success',
  duration_ms: 150,
  ip_address: '192.168.1.1'
});
// Bad: Unstructured logs (hard to parse)
console.log('User 12345 logged in successfully in 150ms from 192.168.1.1');
// JSON Format (Elasticsearch friendly)
{
  "@timestamp": "2024-01-15T10:30:00Z",
  "level": "ERROR",
  "service": "api-gateway",
  "trace_id": "abc123",
  "message": "Database connection failed",
  "error": {
    "type": "ConnectionError",
    "code": "ECONNREFUSED"
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide	Contents
Structured Logging	Structured Logging
Log Levels & Patterns	Log Levels & Patterns
Log Analysis Tools	Log Analysis Tools
Common Log Analysis Queries	Common Log Analysis Queries

Best Practices

✅ DO

Follow established patterns and conventions
Write clean, maintainable code
Add appropriate documentation
Test thoroughly before deploying

❌ DON'T

Skip testing or validation
Ignore error handling
Hard-code configuration values

Security

Security scanPassed, 100 of 100Pattern checks on the skill's files.
Model reviewPassed
semgrepFailed, 0 of 100
njsscanPassed, 75 of 100
trufflehogFailed, 0 of 100

See the full security report

Quality evaluation

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Source

SKILL.md in the repositoryCheckingskills/log-analysis/SKILL.md

Popularity

Repository stars: 345
Repository forks: 57
7-day trend score: 29

Stars and forks are for the whole GitHub repository, not this skill alone. Refreshed 21 Mar 2026, 7 months ago.

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