# Intellij Plugin Development

> IntelliJ plugin development reference when working on extension points, decompiling bundled plugin JARs, finding API usage examples, navigating IntelliJ SDK, or investigating how other plugins implement a feature.

- Skill: `haehnchen/intellij-plugin-development` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add haehnchen/intellij-plugin-development`
- Raw SKILL.md: https://api.skillmd.com/api/skills/haehnchen/intellij-plugin-development/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: haehnchen (https://skillmd.com/u/haehnchen)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/haehnchen/intellij-plugin-development

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# IntelliJ Plugin Development

Quick reference for tools, APIs, and resources used when developing or investigating IntelliJ/PhpStorm plugins in this project.

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## SDK & Documentation

- **SDK Docs:** https://plugins.jetbrains.com/docs/intellij/
- **Extension Point List:** https://plugins.jetbrains.com/docs/intellij/extension-point-list.html
- **IntelliJ Community Source:** https://github.com/JetBrains/intellij-community
- **Plugin Template:** https://github.com/JetBrains/intellij-platform-plugin-template

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## Skills in this folder

| File | Purpose |
|---|---|
| `references/extension-point-explorer.md` | Find plugins by extension point; search open-source implementations; download plugins for decompilation |
| `references/decompilation.md` | Decompile plugin JARs with Vineflower; locate bundled JARs in Gradle cache; download ZIPs from Marketplace |

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## Decompilation (quick reference)

Always use **Vineflower** — not IntelliJ's bundled Fernflower. A local copy is at `decompiled/vineflower.jar`.

```bash
java -jar decompiled/vineflower.jar input.jar output-src/
```

See [`references/decompilation.md`](./references/decompilation.md) for full usage, bundled JAR paths, and Marketplace ZIP downloads.

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## Extension Point Explorer (quick reference)

Use the JetBrains Marketplace API to find plugins implementing a given extension point, get GitHub source search URLs or download plugin releases from the marketplace for decompilation.

See [`references/extension-point-explorer.md`](./references/extension-point-explorer.md) for step-by-step instructions.