fastify-plugins

Develop and manage Fastify plugins with encapsulation, decorators, and lifecycle hooks.

23|1|Updated Oct 14, 2025
One-click install
npx skills add https://github.com/qauth-labs/qauth --skill fastify-plugins
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: fastify-plugins
Source: https://github.com/qauth-labs/qauth/tree/main/.claude/skills/fastify-plugins
Command: npx skills add https://github.com/qauth-labs/qauth --skill fastify-plugins

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes reference.md (resource) components.

What problem does it solve?

This Skill guides developers in creating, reviewing, and maintaining Fastify plugins that respect encapsulation, decorators, and lifecycle hooks, ensuring scalable and maintainable server architectures.

Core Features & Use Cases

  • Plugin Development: Framework for building new Fastify plugins with correct typing, encapsulation, and resource cleanup.
  • Review and Refactor: Assists in analyzing plugin code for proper encapsulation, dependency breaking, and lifecycle management.
  • Debugging: Supports diagnosing issues related to plugin registration order, decorator visibility, and hook execution.

Quick Start

Use the fastify-plugins skill to ensure your plugin is wrapped with fastify-plugin and properly extends the Fastify instance before deploying.

Frequently Asked Questions about fastify-plugins

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

FAQPage Schema
How do I build a Fastify plugin with correct encapsulation and decorators?

Build a Fastify plugin by wrapping it with fastify-plugin to control encapsulation, extending the instance with decorators, and binding lifecycle hooks for scalable server architecture.

Why are my Fastify decorators not visible across different plugins?

Decorator visibility issues occur when plugins are encapsulated without fastify-plugin. Wrap your plugin to break encapsulation, ensuring decorators are properly exposed to the parent Fastify instance.

How do I debug Fastify plugin registration order and hook execution?

Debug hook execution and registration order by analyzing plugin encapsulation and ensuring fastify-plugin is applied correctly, which resolves lifecycle conflicts and dependency visibility issues.

What is the best way to review Fastify plugin code for proper resource cleanup?

Review plugin code by checking for correct fastify-plugin wrapping, verifying decorator encapsulation boundaries, and validating that lifecycle hooks properly manage resource cleanup before deployment.

When do I need to use fastify-plugin to break encapsulation in my server design?

Use fastify-plugin to break encapsulation when you need decorators and hooks registered inside a plugin to be visible to the parent Fastify instance, ensuring maintainable server architecture.