SkillsLib.ai

Incident Investigation & Root Cause Analysis Using Observability Signals

Correlate observability signals to pinpoint incident root causes

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100+ downloads
Updated Nov 2026

What You Can Do

You provide raw logs, metrics, and traces from your incident, and Claude systematically correlates them to identify root causes rapidly. Instead of drowning in noise, you get a focused investigation workflow that prioritizes the most likely failure points and guides you to actionable insights.

Features

Correlate logs, metrics, and traces to identify causal relationships across distributed systems
Generate targeted investigation queries for your specific incident pattern
Prioritize anomalies by impact and likelihood across infrastructure, application, and data layers
Map errors and latency spikes to specific services, pods, databases, or dependency failures
Extract key signals from noisy observability data and filter out red herrings
Guide systematic investigation with step-by-step workflows and evidence checklists
Build correlated incident timelines with documented evidence chains for post-mortems

Example Output

Incident: API Response Time Spike

You paste logs showing connection timeouts, metrics showing 95th percentile latency spike from 50ms to 2s, and traces showing requests blocked in database pool.

Claude identifies:

code
ROOT CAUSE: Database connection pool exhaustion
- Pool size: 20 connections | Concurrent queries: 35
- Culprit query: SELECT * FROM events (full table scan, missing index)
- Timing: Spike begins when nightly batch job starts at 14:32 UTC

Evidence:
- Metrics: DB CPU ↑ 400%, I/O wait ↑ 90%
- Logs: "connection pool timeout" errors starting 14:32:15
- Traces: P99 latency in query_events ↑ 250ms
- Correlation: Batch job + API traffic overlap every night

Incident: Memory Leak in Microservice

You paste heap usage metrics showing linear growth, Java GC logs, and container restart logs.

Claude identifies:

code
ROOT CAUSE: Unreleased HTTP connection handles
- Heap grows ~50MB/hour after v2.3.1 deploy (2026-07-15)
- GC logs show Eden generation survivors retained
- Container hits 1.8GB limit, OOMkiller restarts service every 6 hours
- Code change: v2.3.1 introduced HTTP pooling without proper cleanup

Fix: Add connection pool draining in shutdown hook
Temporary: Lower container memory threshold for graceful restart

What's Included

  • SKILL.md: Claude instructions for incident investigation and signal correlation
  • Investigation Workflow Template: Systematic step-by-step checklist for production incidents
  • Query Checklists: Pre-built investigation queries for common incident patterns (latency spikes, error cascades, resource exhaustion)
  • Signal Correlation Framework: Guidelines for mapping logs → metrics → traces → root cause
  • Root Cause Analysis Worksheet: Structured template for documenting findings and evidence chains
  • Runbook Generator: Template for creating documented incident runbooks from findings

Who It's For

  • Site Reliability Engineers (SREs) — Rapid incident diagnosis during critical production outages
  • DevOps Engineers — Infrastructure troubleshooting and observability-driven debugging
  • On-Call Responders — Fast triage and root cause identification to reduce MTTR
  • Platform / Backend Engineers — Service reliability troubleshooting and post-mortem analysis
  • Engineering Managers — Systematic root cause documentation for incident reviews

Best For

  • Production incident response — Diagnose and stabilize active outages in real time
  • Post-mortem root cause analysis — Document findings and evidence chains for incident reviews
  • Distributed system failures — Correlate errors across microservices and dependencies
  • Performance degradation — Identify latency spikes, resource exhaustion, and cascading failures
  • Data pipeline debugging — Trace failures through logs, scheduled jobs, and database queries

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