postmortem-writing
Write Blameless Incident Postmortems
Incident reviews often lose key facts or produce vague follow-up work. This skill guides Claude, Codex, and Claude Code through timelines, root cause analysis, meetings, and action items.
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Review the Skillstore skill "postmortem-writing" from https://skillstore.io/skills/wshobson-postmortem-writing.md and its manifest at https://skillstore.io/api/skills/wshobson-postmortem-writing/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Your Agent should still show its plan and request any confirmation required by the security policy.
Agent-readable resources
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Test it
Using "postmortem-writing". A payment outage lasted 47 minutes after a deployment changed database connection behavior.
Expected outcome:
A postmortem draft with a UTC timeline, customer impact, connection pool root cause, detection gaps, and owned prevention tasks.
Using "postmortem-writing". A minor cache incident caused high API latency for 12 minutes.
Expected outcome:
A quick postmortem that summarizes the cache miss storm, immediate mitigation, long-term fix, and lesson learned.
Using "postmortem-writing". Three recent incidents show slow detection and weak follow-up ownership.
Expected outcome:
A pattern review that highlights recurring detection gaps, improves action item quality, and recommends process changes.
Security Audit
SafeAll static findings are false positives caused by Markdown fences, inline code formatting, sample incident analysis text, and passive reference links. No prompt injection, command execution, active network behavior, or data exfiltration intent was found in SKILL.md.
Risk Factors
⚙️ External commands (14)
🌐 Network access (4)
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https://skillstore.io/skills/wshobson-postmortem-writing/audits/8?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_reportMarkdown badge
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<a href="https://skillstore.io/skills/wshobson-postmortem-writing?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/wshobson-postmortem-writing/security.svg" alt="Skillstore security assessment" loading="lazy"></a>Embed card
<iframe src="https://skillstore.io/embed/skills/wshobson-postmortem-writing.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>Academic citations (APA · BibTeX · CFF)
APA citation
wshobson. (2026). postmortem-writing security audit report (audit version 8) [Author version unspecified]. Skillstore. https://skillstore.io/skills/wshobson-postmortem-writing/audits/8BibTeX citation
@techreport{wshobson-wshobson-postmortem-writing-2026,
author = {wshobson},
title = {postmortem-writing security audit report (audit version 8)},
institution = {Skillstore},
year = {2026},
number = {8},
url = {https://skillstore.io/skills/wshobson-postmortem-writing/audits/8},
note = {Author version unspecified}
}CITATION.cff
cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "postmortem-writing security audit report (audit version 8)"
version: "unspecified"
type: report
authors:
- name: "wshobson"
date-released: "2026-07-08"
url: "https://skillstore.io/skills/wshobson-postmortem-writing/audits/8"
identifiers:
- type: other
value: "skillstore:wshobson-postmortem-writing:audit:8"
description: "Skillstore immutable audit report identifier"
Compare variants
2 installable variantsEach author remains a separate installable skill. The recommended variant is ranked by Skillstore evidence.
Why this variant is first
wshobson-postmortem-writing
2026-08-21
sickn33-postmortem-writing
2026-08-21
Skillstore Score
Why this score Evidence Confidence: HighWhat You Can Build
Document a Production Outage
Create a clear postmortem after a severe service incident with impact, timeline, causes, and follow-up work.
Turn Reviews Into Action Items
Convert lessons learned into owned tasks with priority, due dates, and measurable prevention goals.
Facilitate a Blameless Meeting
Run a structured review that keeps discussion focused on evidence, system conditions, and learning.
Try These Prompts
Use the postmortem-writing skill. Draft a blameless postmortem for this incident: [summary]. Include impact, timeline, root cause, and action items.
Use the 5 Whys template for this incident: [facts]. For each why, include evidence and separate proximate causes from systemic causes.
Create a 60 minute postmortem meeting plan for this incident: [details]. Include agenda timing, discussion prompts, risks, and expected outputs.
Analyze these postmortems: [summaries]. Identify repeated failure modes, weak action items, ownership gaps, and the highest value process improvements.
Best Practices
- Collect exact times, customer impact, and evidence before drafting.
- Phrase causes as system conditions instead of individual blame.
- Turn lessons into owned tickets with due dates.
Avoid
- Writing a blame document focused on individual mistakes.
- Publishing vague action items without owners or dates.
- Skipping minor incidents that reveal repeat patterns.
Frequently Asked Questions
Does this skill write a full postmortem?
Does it gather data from incident tools?
Can it support blameless reviews?
Does it include meeting guidance?
Can Claude, Codex, and Claude Code use it?
Is it enough for security incidents?
Developer Details
Author
wshobsonLicense
MIT
Skillstore revision
r1
Version notice
The author did not declare a version.
Repository
https://github.com/wshobson/agents/tree/main/plugins/incident-response/skills/postmortem-writingRef
64ca8af0f54a325752f08bd54e52151061ea659a
Maintenance freshness
7/22/2026
Usage
30 downloads · 240 views
File structure
📄 SKILL.md