Gate Escape Postmortem
Run a blameless postmortem on a gate escape — something that shipped to develop that a gate should have caught (a non-SUCCESS check at merge, an override label, a Revert, an overdue deviation, or a named post-merge bug). Identify the escaped class, do blameless root-cause, name the concrete PREVENTING GATE (mandatory — the entry cannot close without it), author a subagent-eval case when the miss was agent-reviewable, file that gate as a normal self-improvement category entry, and append to docs/self-improvement/postmortems.md. Use when the postmortem-owed SessionStart nudge fires, or the user says "postmortem", "gate escape", "why did this ship", "post-merge bug". Escalate deep C++ root-cause to debug-detective. Read-write — edits the ledger + a category entry.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
The invocation shortcut for the gate-escape postmortem. Plan + rationale: [docs/plans/shipped/gate-escape-postmortem.md](../../../../docs/plans/shipped/gate-escape-postmortem.md). This skill is the incident finder; the existing self-improvement apply-loop (docs/self-improvement/categories/* + AGENT_SELF_IMPROVEMENT.md threshold + triage) is the applier. No second system.
What this skill does
Gate Escape Postmortem is a community-contributed Claude Code skill in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/gate-escape-postmortem/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when the postmortem-owed SessionStart nudge fires, or the user says "postmortem", "gate escape", "why did this ship", "post-merge bug". Escalate deep C++ root-cause to debug-detective.
Who uses this skill
The Gate Escape Postmortem Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 191,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/gate-escape-postmortem
curl -L https://claudskills.com/skills/gate-escape-postmortem/SKILL.md \
-o ~/.claude/skills/gate-escape-postmortem/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/gate-escape-postmortem/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/gate-escape-postmortem/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\gate-escape-postmortem\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Gate Escape Postmortem Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/gate-escape-postmortem/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Gate Escape Postmortem skill do?
Run a blameless postmortem on a gate escape — something that shipped to develop that a gate should have caught (a non-SUCCESS check at merge, an override label, a Revert, an overdue deviation, or a named post-merge bug). Identify the escaped class, do blameless root-cause, name the concrete PREVENTING GATE (mandatory — the entry cannot close without it), author a subagent-eval case when the miss was agent-reviewable, file that gate as a normal self-improvement category entry, and append to docs/self-improvement/postmortems.md. Use when the postmortem-owed SessionStart nudge fires, or the user says "postmortem", "gate escape", "why did this ship", "post-merge bug". Escalate deep C++ root-cause to debug-detective. Read-write — edits the ledger + a category entry.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Gate Escape Postmortem skill?
Use Gate Escape Postmortem when your Claude Code task falls under the Engineering category — specifically in the engineering misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Gate Escape Postmortem" or describe the task and let Claude pick). Browse related skills at
/category/engineering/.
What is a Claude Code skill and how does the Gate Escape Postmortem skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Gate Escape Postmortem is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
alexandrosk0. (2026). Gate Escape Postmortem [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/gate-escape-postmortem/
BibTeX
@misc{gate-escape-postmortem-2026,
author = {alexandrosk0},
title = {Gate Escape Postmortem [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/gate-escape-postmortem/}
}Embed this skill
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Security scan
Grade A · scanned 2026-08-26 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 1 of 10 categories (filesystem), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ⚠ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/gate-escape-postmortem/#security)
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