post-mortem

A packaged version of the post-mortem writing workflow for Claude Code. It guides a user through a blameless incident report one question at a time and includes an automated review.

In plain words
What is it for?
Use it to create reviewed post-mortems after technical, operational, or organizational incidents have been resolved.
Why use it?
It gives the workflow a reusable package format so it can be installed and used as an add-on instead of recreated for each project.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add GeoffreyCoulaud/bgcpm
agentmods
npx agentmods add plugins/geoffreycoulaud/bgcpm/post-mortem
Clone the repo
git clone --depth 1 https://github.com/GeoffreyCoulaud/bgcpm

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

post-mortem scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/post-mortem/.claude-plugin/plugin.json · 9 lines

What it actually says

{
	"name": "post-mortem",
	"description": "Write blameless post-mortems interactively, one question at a time, with automated review",
	"version": "1.0.0",
	"author": {
		"name": "Geoffrey Coulaud"
	}
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 9 lines scan A 8b48ec31bcb5

Subscribe to this mod's changes

post-mortem is a plugin published in the GitHub repository GeoffreyCoulaud/bgcpm (4 stars, last pushed 5mo ago), licensed Unlicense. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.