One Way Door (Grade A) logo

One Way Door (Grade A)Security-tested devops skill for Claude AI. Grade A. Use this skill when creating new files that represent architectural decisions — data models, infrastructure configs, auth boundaries, API contracts

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Daniel NikulshynReviewed by Daniel Nikulshyn·Updated July 2026

Overview

One Way Door is a security-tested devops skill for Claude AI, Grade A. It flags irreversible decisions and forces discussions about trade-offs before committing to architectural decisions such as data models, infrastructure configs, auth boundaries, API contracts, CI/CD pipelines, or event systems. The skill helps identify 'one-way doors' - decisions that are difficult or expensive to reverse once implemented. It provides questions to ask for different types of files to ensure thorough consideration of the implications of these decisions.

Key features

  • Flags irreversible decisions in data models, infrastructure configs, auth boundaries, API contracts, and more
  • Provides questions to ask for thorough consideration of decision implications
  • Supports various file types for data models, infrastructure, auth, and API contracts

Pricing

Model
Free
Category
Skills
Rating
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Use cases

Database Schema Migration

Use One Way Door when planning a database schema migration to ensure it aligns with future needs and is properly discussed.

API Contract Definition

Apply One Way Door when defining API contracts to consider consumer needs, versioning, and breaking changes.

Infrastructure Configuration

Utilize One Way Door for infrastructure configuration to evaluate simplicity, team experience, and failure recovery.

Pros & Cons

Pros

  • Encourages careful consideration of irreversible decisions
  • Helps prevent expensive mistakes in software development
  • Provides guidance on key architectural decision areas

Cons

  • May slow down development process due to additional consideration requirements
  • Relies on predefined file matching patterns which might not cover all cases

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Q&A

Can One Way Door be used for CI/CD pipeline or event system files?

The description lists CI/CD pipelines and event systems as target decision areas, so the skill will flag irreversible decisions in those contexts, though the exact file patterns for them are not detailed in the provided information.

Asked by Kwame Mensah · Apr 18, 2026

Will using One Way Door slow down my development workflow?

Yes, because the skill forces a discussion of trade‑offs and asks detailed questions before committing changes, which can add extra steps to the process, though it aims to prevent costly irreversible mistakes.

Asked by Diego Fernández · Apr 13, 2026

What types of files does One Way Door analyze to flag one‑way decisions?

One Way Door matches specific patterns such as schema.prisma, schema.graphql, .sql, migration files, models.* for data models; Dockerfile, docker‑compose, .tf, Pulumi, CDK, CloudFormation, Kubernetes manifests, Helm charts for infrastructure; and auth.*, firestore.rules, storage.rules, security.*, rbac.*, permissions.* for authentication and authorization.

Asked by Tomáš Novák · Jan 25, 2026

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