postmortem-writing SKILL.md skillA
postmortem-writing from wshobson/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wshobson/agents/postmortem-writing@git:20260928.51b6e0bPins git:20260928.51b6e0b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wshobson/agents
- Path
plugins/incident-response/skills/postmortem-writing/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260928.51b6e0b, committed Sep 28, 2026
- First version recorded
- Dec 16, 2025
- Size
- 6,795 bytes
- Repository stars
- 42,320
- License
- MIT
Write effective blameless postmortems with root cause analysis, timelines, and action items. Use when conducting incident reviews, writing postmortem documents, or improving incident response processes.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Postmortem Writing Comprehensive guide to writing effective, blameless postmortems that drive organizational learning and prevent incident recurrence. ## When to Use This Skill - 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 - SEV1 or SEV2 incidents - Customer-facing outages > 15 minutes - Data loss or security incidents - Near-misses that could have been severe - Novel failure modes - Incidents requiring unusual intervention ## Quick Start ### Postmortem Timeline …
Read the whole file at its exact version.
How to install
mdr add wshobson/agents/postmortem-writing@sha256:1a9d5b19b9ab32acThe line at the top of this page pins the label git:20260928.51b6e0b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_v245qw5fsoohhvyc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Dec 16, 2025 and Sep 28, 2026, about one every 72 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260928.51b6e0b latest | 2026-09-28 | 51b6e0b | 6,795 B | A | view · diff |
| git:20260522.be57c0b | 2026-05-22 | be57c0b | 6,938 B | A | view · diff |
| git:20260307.47a5dbc | 2026-03-07 | 47a5dbc | 12,411 B | A | view · diff |
| git:20260119.5684887 | 2026-01-19 | 5684887 | 12,670 B | A | view · diff |
| git:20251216.01d93fc | 2025-12-16 | 01d93fc | 12,170 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6795 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
wshobson/agents · 42,320 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_v245qw5fsoohhvyc GET https://markdownregistry.com/api/v1/resolve?ref=wshobson/agents/postmortem-writing GET https://markdownregistry.com/api/v1/blob/1a9d5b19b9ab32acb6616fb0990b8307888da0169537929916762d91501b84e0
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.