# Webiny API System Catalog

> API — System — 2 abstractions. System installation event handlers and use cases.

- Skill: `gabrielmoreira/webiny-api-system-catalog` (Agent Skill)
- Install (CLI): `npx skillmds@latest add gabrielmoreira/webiny-api-system-catalog`
- Raw SKILL.md: https://api.skillmd.com/api/skills/gabrielmoreira/webiny-api-system-catalog/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: gabrielmoreira (https://skillmd.com/u/gabrielmoreira)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/gabrielmoreira/webiny-api-system-catalog

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# API — System

System installation event handlers and use cases.

## How to Use

1. Find the abstraction you need below
2. You MUST read the source file to get the exact interface and types!
3. Import: `import { Name } from "<importPath>";`
4. See `webiny-use-case-pattern` or `webiny-event-handler-pattern` skills for implementation patterns

## Abstractions

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**Name:** `InstallSystemUseCase`
**Import:** `import { InstallSystemUseCase } from "webiny/api/system"`
**Source:** `@webiny/api-core/features/system/InstallSystem/index.ts`
**Description:** Run system-wide installation.

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**Name:** `SystemInstalledEventHandler`
**Import:** `import { SystemInstalledEventHandler } from "webiny/api/system"`
**Source:** `@webiny/api-core/features/system/InstallSystem/index.ts`
**Description:** Hook into system lifecycle after the system is installed.

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