post-incident-review

post-incident-review is a skill for Claude Code from UnitOneAI/SecuritySkills. It costs 96 tokens per session (6,307 once invoked), scanned A, original, MIT.

A structured review after a security incident has been resolved. It follows NIST guidance, where NIST is a U.S. standards body, to reconstruct events, find root causes, record lessons, and track fixes.

In plain words
What is it for?
Use it to create an incident timeline, analyze causes and control failures, capture lessons, and plan remediation after an incident.
Why use it?
It turns a stressful incident into a documented, blameless review and helps prevent similar problems from recurring.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to create an incident timeline, analyze causes and control failures, capture lessons, and plan remediation after an incident.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/unitoneai/securityskills/post-incident-review
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 UnitOneAI/SecuritySkills --skill post-incident-review
Clone the repo
git clone --depth 1 https://github.com/UnitOneAI/SecuritySkills

Made for: Claude Code.

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 post-incident-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/unitoneai/securityskills/post-incident-review/github.svg)](https://agentmods.dev/skills/unitoneai/securityskills/post-incident-review)
Your own site
<a href="https://agentmods.dev/skills/unitoneai/securityskills/post-incident-review"><img src="https://agentmods.dev/badge/skills/unitoneai/securityskills/post-incident-review/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 post-incident-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/unitoneai/securityskills/post-incident-review"><img src="https://agentmods.dev/badge/skills/unitoneai/securityskills/post-incident-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,307 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 $0.00096 $0.06307
Opus 5 $0.00048 $0.03154
Sonnet 5 $0.00019 $0.01261
Haiku 4.5 $0.00010 $0.00631

Measured 10d ago against content hash 404a6bfdd265, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

post-incident-review 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 10d 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/post-incident-review/SKILL.md · 458 lines

How it starts

The opening of the file, as written. The whole thing — 458 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Post-Incident Review -- NIST SP 800-61 Rev 2

Framework: NIST SP 800-61 Rev 2 (Section 3.4: Post-Incident Activity) Role: SOC Analyst, Security Engineer, vCISO Time: 30-60 min Output: Post-incident review report with blameless retrospective, root cause analysis, control failure mapping, metrics (MTTD, MTTR, MTTC), lessons learned, and remediation tracking plan


1. When to Use

If a target is provided via arguments, focus the review on: $ARGUMENTS

Invoke this skill when any of the following conditions are met:

  • Incident resolved -- An incident has been contained, eradicated, and recovery is complete or substantially complete. The PIR should be conducted within 5 business days of incident closure (NIST recommendation: "within several days of the end of the incident").
  • Scheduled retrospective -- The organization's IR process mandates a post-incident review for all incidents above a severity threshold (typically SEV-1 and SEV-2, optionally SEV-3).
  • Pattern identification -- Multiple similar incidents have occurred and the team needs to identify systemic root causes and recurring control failures.
  • Compliance requirement -- Regulatory frameworks (SOC 2, ISO 27001, PCI DSS) or cyber insurance policies require documented post-incident analysis and lessons learned.
  • Near-miss analysis -- A security event that could have been a significant incident was detected and contained early, and the team wants to extract preventive lessons.

Do not use when: The incident is still active and in the containment or eradication phase (use ir-playbook or containment). This skill is for post-resolution analysis only.


2. Context the Agent Needs

Before conducting the PIR, gather or confirm:

  • Incident report -- The completed incident response report from the ir-playbook (incident ID, classification, severity, timeline, IOCs, actions taken).
  • Timeline of events -- Chronological record of all significant events from initial compromise through detection, containment, eradication, and recovery.
  • Team participants -- Names and roles of all personnel involved in the response (IR team, management, legal, communications, external responders).
  • Communication logs -- Records of notifications, escalations, and status updates sent during the incident.
  • Evidence and forensic findings -- Summary of forensic analysis results, root cause indicators, and attacker TTPs identified.
  • Existing controls -- Documentation of security controls that were in place at the time of the incident (detection rules, access controls, network segmentation, patching cadence).
  • Previous PIR reports -- Any prior post-incident reviews for similar incident types, to identify recurring patterns.
  • Metrics data -- Timestamps needed to compute MTTD, MTTR, and MTTC (see Step 4).

Read the full file on GitHub · 458 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. 10d ago First seen · 458 lines · 96 tokens per session scan A 404a6bfdd265

Subscribe to this mod's changes

post-incident-review is a skill published in the GitHub repository UnitOneAI/SecuritySkills (61 stars, last pushed 2mo ago), licensed MIT. It adds 96 tokens to every session and 6,307 once invoked, about $0.0005 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 2026-08-30.

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