Investigates server/infrastructure metric anomalies in PostHog Metrics — from "this metric is rising/dropping/spiking" or a fired alert to a probable cause with evidence. Use when asked why a metric looks wrong (ingestion lag rising, error rate spiking, latency degrading, queue depth growing, throughput dropping), when an alert fires on an OTel/Prometheus metric, or for any incident triage that…
Install
npx skills add PostHog/ai-plugin --skill investigating-metric-anomaliesnpx skills add PostHog/ai-plugin --skill investigating-metric-anomalies -a claude-code -gnpx skills add PostHog/ai-plugin --skill investigating-metric-anomalies -a codex -ggemini skills install https://github.com/PostHog/ai-plugin.git --path skills/investigating-metric-anomaliesgh skill install PostHog/ai-plugin investigating-metric-anomaliesgit clone --depth 1 https://github.com/PostHog/ai-plugin /tmp/PostHog__ai-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/PostHog__ai-plugin/skills/investigating-metric-anomalies ~/.claude/skills/investigating-metric-anomalies # Claude Code
cp -R /tmp/PostHog__ai-plugin/skills/investigating-metric-anomalies ~/.agents/skills/investigating-metric-anomalies # Codex, Cursor, Gemini CLI, Copilot, OpenCode