Postmortem Writing
This walks you through writing blameless postmortems with templates, timelines, and the actual mechanics of running post-incident reviews. You get a standard postmortem template with sections for root cause analysis, 5 whys, action items with owners and due dates, and a table contrasting blame-focused versus blameless language. It includes a day-by-day timeline from incident to quarterly review and triggers for when to write one (SEV1/SEV2, customer-facing outages over 15 minutes, near-misses). The templates are detailed enough to fork and use immediately. Most useful if you're trying to build a learning culture and need structure around the "what happened, why it happened, what we're doing about it" process without pointing fingers.
- skills.sh installs
- 190
- GitHub stars
- 39.4K
- last updated
- Jun 3, 2026
Install
$ npx -y skills add sickn33/antigravity-awesome-skills --skill postmortem-writing --agent claude-codeInstalls into .claude/skills of the current project.
Files
Postmortem Writing
Comprehensive guide to writing effective, blameless postmortems that drive organizational learning and prevent incident recurrence.
Do not use this skill when
- The task is unrelated to postmortem writing
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open
resources/implementation-playbook.md.
Use this skill when
- Conducting post-incident reviews
- Writing postmortem documents
- Facilitating blameless postmortem meetings
- Identifying root causes and contributing factors
- Creating actionable follow-up items
- Building organizational learning culture
Core Concepts
1. Blameless Culture
| Blame-Focused | Blameless |
|---|---|
| "Who caused this?" | "What conditions allowed this?" |
| "Someone made a mistake" | "The system allowed this mistake" |
| Punish individuals | Improve systems |
| Hide information | Share learnings |
| Fear of speaking up | Psychological safety |
2. Postmortem Triggers
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- Repository
- github.com/sickn33/antigravity-awesome-skills
- Category
- Documentation
- First seen
- Jun 3, 2026
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