premortem

Identify failure modes and design mitigations for high-stakes features.

14|6|Updated Feb 3, 2026

Search Tags:#security #resilience #mitigation #failure modes #risk analysis #premortem

Ready to run

npx skills add https://github.com/tyevans/tackline --skill premortem-tyevans

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: premortem
Source: https://github.com/tyevans/tackline/tree/main/skills/workflows/premortem
Command: npx skills add https://github.com/tyevans/tackline --skill premortem-tyevans

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps proactively identify potential failure modes and security risks for high-stakes features before they are built, enabling the design of robust mitigations into the initial plan.

Core Features & Use Cases

Failure Mode Identification: Generates concrete scenarios across security, reliability, and user/business lenses.
Risk Prioritization: Ranks identified failures by severity and likelihood, allowing users to focus on critical risks.
Mitigation Design: Develops specific prevention, detection, and verification strategies for prioritized failures.
Task Generation: Creates actionable tasks and epics for tracking mitigation work.
Use Case: Before implementing a new payment processing module, run the Premortem skill to uncover potential security exploits, race conditions during high load, or compliance violations, and then integrate the recommended fixes into the development plan.

Quick Start

Use the premortem skill to stress-test the new user authentication flow.

Frequently Asked Questions about premortem

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I identify failure modes before implementing a new feature?▼

To identify failure modes before implementation, a premortem risk analysis generates concrete security, reliability, and business impact scenarios. It ranks these failures by severity and likelihood to prioritize risks.

What is the best way to design mitigations for security and reliability risks?▼

Designing mitigations for security and reliability risks involves creating specific prevention, detection, and verification strategies for prioritized failures. The premortem process translates these strategies into actionable remediation tasks.

When do I need to run a premortem risk analysis?▼

You need to run a premortem risk analysis before building high-stakes features. It is essential when you need to uncover potential security exploits, race conditions, or compliance violations and integrate fixes into the development plan.

Can I generate actionable tasks from a risk prioritization assessment?▼

Yes, you can generate actionable tasks from a risk prioritization assessment. The analysis creates specific tasks and epics for tracking mitigation work, ensuring risk remediation is integrated before implementation begins.

Does this premortem analysis work for high-stakes payment processing modules?▼

Yes, premortem analysis works for high-stakes payment processing modules. It effectively stress-tests new flows by uncovering potential security exploits, high-load race conditions, and compliance violations before development.