LogTail Smart Log Monitor & Analyzer

Monitor log files in real-time. Filter noise, surface errors, summarize patterns, alert on anomalies. Makes logs readable.

Security Scan

The skill's code and instructions match its stated purpose (tail and analyze local logs), it requests no credentials or installs, and there is no evidence of network exfiltration or unrelated capabilities.

Purpose & Capability

The name/description, SKILL.md examples, README, and the included src/log-tail.js all implement a local log-tailing and summarization capability. No unexpected binaries, cloud credentials, or unrelated access are requested.

Instruction Scope

SKILL.md and the code instruct the agent/user to provide local log file paths and show how to watch/summarize entries. There are no instructions to read other system config, secrets, or to transmit data externally. The disclaimer explicitly states data is processed/stored locally.

Install Mechanism

There is no install spec; the skill is instruction-only with an included Node.js source file. No downloads, external installers, or archive extraction are present.

Credentials

The skill requests no environment variables or credentials (ok). However, it reads arbitrary local log files and buffers entries in memory, so logs may contain sensitive data (secrets, PII). This is expected for a log tool but is a privacy consideration the user must manage via file selection and process permissions.

Persistence & Privilege

always is false and the skill does not request persistent system-wide privileges or modify other skills. It keeps an in-memory buffer and uses fs.watchFile; typical runtime behavior for a log watcher.

Assessment

This skill appears to do what it claims: tail and analyze local logs. Before installing/running: (1) ensure you pass only log file paths you intend to monitor (logs can contain secrets/PII); (2) run it with least privilege (don't run as root) so it can't read unrelated files; (3) be aware it buffers up to maxBuffer entries in memory—reduce maxBuffer for low-memory environments; (4) there is no network activity in the provided code, but if you configure integration/alerting later, review any added code or settings for outbound endpoints; (5) if you need higher assurance, run the included src/log-tail.js in an isolated test environment and review the file yourself (the full source is included).

Monitor log files in real-time. Filter noise, surface errors, summarize patterns, alert on anomalies. Makes logs readable.

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Logs are noisy. LogTail finds the signal.

Usage

const { LogTail } = require('./src/log-tail');
const tail = new LogTail({
  files: ['./logs/app.log', './logs/error.log'],
  filters: {
    ignore: ['DEBUG', 'health_check'],
    highlight: ['ERROR', 'FATAL', 'timeout']
  }
});

tail.watch((entry) => {
  if (entry.severity === 'error') console.log('🔴', entry.message);
});

const summary = await tail.summarize({ period: '1h' });

Summary Output

📋 Log Summary — Last Hour

Total: 12,847 entries
Errors: 23 (0.18%)
Warnings: 156 (1.2%)

Top errors:
  1. "Connection timeout" — 12x (clustered 2:15-2:20 PM)
  2. "Rate limit exceeded" — 8x (spread)
  3. "File not found" — 3x

Pattern: Timeout spike correlates with backup job at 2:15 PM

Features

• Real-time tailing with smart filtering
• Pattern detection — recurring errors, time correlations
• Noise reduction — configurable ignore patterns
• Anomaly detection — "Error rate 3x normal"
• Multi-file — multiple log files simultaneously
• Format agnostic — JSON, plaintext, syslog, custom

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⚠️ Disclaimer

This software is provided "AS IS", without warranty of any kind, express or implied.

USE AT YOUR OWN RISK.

• The author(s) are NOT liable for any damages, losses, or consequences arising from the use or misuse of this software — including but not limited to financial loss, data loss, security breaches, business interruption, or any indirect/consequential damages.
• This software does NOT constitute financial, legal, trading, or professional advice.
• Users are solely responsible for evaluating whether this software is suitable for their use case, environment, and risk tolerance.
• No guarantee is made regarding accuracy, reliability, completeness, or fitness for any particular purpose.
• The author(s) are not responsible for how third parties use, modify, or distribute this software after purchase.

By downloading, installing, or using this software, you acknowledge that you have read this disclaimer and agree to use the software entirely at your own risk.

DATA DISCLAIMER: This software processes and stores data locally on your system. The author(s) are not responsible for data loss, corruption, or unauthorized access resulting from software bugs, system failures, or user error. Always maintain independent backups of important data. This software does not transmit data externally unless explicitly configured by the user.

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Support & Links

🐛 Bug Reports	[e-mail]
☕ Ko-fi	ko-fi.com/theshadowrose
🛒 Gumroad	shadowyrose.gumroad.com
🐦 Twitter	@TheShadowyRose
🐙 GitHub	github.com/TheShadowRose
🧠 PromptBase	promptbase.com/profile/shadowrose

Built with OpenClaw — thank you for making this possible.

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