incident-response-and-postmortems

incident-response-and-postmortems is a skill for Claude Code from aneja5/forge-skills. It costs 58 tokens per session (1,837 once invoked), scanned A, original, MIT.

A set of procedures for handling production incidents, such as service outages or serious failures, and reviewing them afterward. It covers severity levels, on-call response, runbooks, communication, and blameless postmortems.

In plain words
What is it for?
Use it to define on-call procedures, respond to active incidents, create runbooks, and document what happened after a serious outage.
Why use it?
It replaces improvised incident handling with a shared process for restoring service and learning from failures.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the forge-skills plugin — 42 skills, 36 commands, 1 hook shipped together

Good fit Use it to define on-call procedures, respond to active incidents, create runbooks, and document what happened after a serious outage.

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Install with agentmods
npx agentmods add skills/aneja5/forge-skills/incident-response-and-postmortems
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.

Any agent
npx skills add aneja5/forge-skills --skill incident-response-and-postmortems
Clone the repo
git clone --depth 1 https://github.com/aneja5/forge-skills

Made for: Claude Code.

Or install forge-skills, the plugin that ships this one along with the rest of its 42 skills, 36 commands, 1 hook.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for incident-response-and-postmortems

README.md
[![agentmods](https://agentmods.dev/badge/skills/aneja5/forge-skills/incident-response-and-postmortems/github.svg)](https://agentmods.dev/skills/aneja5/forge-skills/incident-response-and-postmortems)
Your own site
<a href="https://agentmods.dev/skills/aneja5/forge-skills/incident-response-and-postmortems"><img src="https://agentmods.dev/badge/skills/aneja5/forge-skills/incident-response-and-postmortems/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for incident-response-and-postmortems

Your own site · 80×15
<a href="https://agentmods.dev/skills/aneja5/forge-skills/incident-response-and-postmortems"><img src="https://agentmods.dev/badge/skills/aneja5/forge-skills/incident-response-and-postmortems.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,837 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00058 $0.01837
Opus 5 $0.00029 $0.00919
Sonnet 5 $0.00012 $0.00367
Haiku 4.5 $0.00006 $0.00184

Measured 8d ago against content hash fbef216ced60, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

incident-response-and-postmortems 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 8d 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.

skills/incident-response-and-postmortems/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Incident Response and Postmortems

Overview

Define how the team detects, mitigates, communicates about, and learns from production incidents — before the first one. Output is .forge/incident-response.md — severity definitions with response times, the declare-mitigate-communicate-resolve-review flow, runbook template, blameless postmortem template, and the comms templates (internal and external). Pairs with observability (alerts feed the declare step) and error-handling-and-resilience (the failure modes alerts watch for).

When to Use

  • A service is going to production and there's no on-call process
  • An incident just happened and the team handled it ad-hoc — write the process before the next one
  • A postmortem is due and there's no template
  • Severity levels are inconsistent across teams
  • A runbook is needed for a critical service

When NOT to Use

  • Localhost-only or pre-prod systems with no users
  • A trivial bug fix — that's debugging-and-recovery
  • A near-miss that didn't affect users — log it, learn from it, but don't fire the full process

Common Rationalizations

Thought Reality
"We're too small for an incident process" Incidents don't wait for headcount. The first Sev1 at 4 staff is when you learn the process you didn't build.
"We'll write the postmortem later" Memory fades within 48h. Two weeks later the timeline is a guess.
"It was their fault" Blame ends learning. Every "someone clicked the wrong button" is a system that allowed the wrong button to be clicked.
"Action items can wait until we have time" Unowned action items are wishes. They never ship.
"We don't need severity levels — just fix everything fast" Without severity, every alert pages every human. Fatigue sets in. The real Sev1 gets missed.
"Comms can be informal during the incident" "Informal" means three different stories reaching three different audiences. Customers, board, and team need consistent, scheduled updates.

Read the full file on GitHub · 144 lines

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. 8d ago First seen · 144 lines · 58 tokens per session scan A fbef216ced60

Subscribe to this mod's changes

incident-response-and-postmortems is a skill published in the GitHub repository aneja5/forge-skills (3 stars, last pushed 3mo ago), licensed MIT. It adds 58 tokens to every session and 1,837 once invoked, about $0.0003 per session on Opus 5. 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 2026-09-03.