postmortem
Use when documenting an incident, outage, or production failure using the structured DERP model (Detection, Escalation, Recovery, Prevention).
npx skills add majiayu000/claude-skill-registry --skill postmortem-arcasilesgroup-ai-engineering --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Postmortem ## Purpose Structured incident postmortem using the DERP model. Guides through Detection, Escalation, Recovery, and Prevention phases with targeted questions. Produces blameless, actionable postmortem documents. ## Trigger - Command: `/ai-postmortem start|continue|find|generate` - Context: incident occurred, production failure, outage resolution, near-miss analysis. ## Modes ### start -- New postmortem 1. **Assign ID** -- generate `PM-YYYY-NNN` (sequential within year). 2. **Set status** -- `draft`. 3. **Scaffold** -- create `.ai-engineering/postmortems/{id}.md` with DERP template. 4. **Interview -- Detection**: - When was the incident first detected? - How was it detected? (monitoring, user report, manual discovery) - What was the time between incident start and detection? - What monitoring should have caught it earlier? 5. **Interview -- Escalation**: - Who was notified and when? - Was the escalation path appropriate? - Were the right people involved at the right time? 6. **Interview -- Recovery**: - What actions were taken to restore service? - What was the total downtime/impact duration? - Was there a rollback? What was the rollback procedure? 7. **Interview -- Pre
- Purpose
- Trigger
- Modes
- start -- New postmortem
- continue <id> -- Resume postmortem
- find [query] -- Search postmortems
- generate -- Create from existing notes
- Document Template
- Status Progression
- Quick Reference
- Storage
What does the postmortem skill do?
Use when documenting an incident, outage, or production failure using the structured DERP model (Detection, Escalation, Recovery, Prevention).
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill postmortem-arcasilesgroup-ai-engineering --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.