> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langbot.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Plugin Directory Structure

This document introduces the standard directory structure and file organization specifications for LangBot plugins, helping developers create compliant plugins.

## Basic Directory Structure

A standard LangBot plugin should follow this directory structure:

```
MyPlugin/
├── manifest.yaml          # Plugin manifest file (required)
├── main.py               # Plugin main entry file (required)
├── README.md             # English plugin documentation (required)
├── readme/               # Multilingual README directory (optional)
│   ├── README_zh_Hans.md # Simplified Chinese documentation
│   ├── README_ja_JP.md   # Japanese documentation
│   └── README_zh_Hant.md # Traditional Chinese documentation (optional)
├── assets/               # Resource files directory
│   ├── icon.svg         # Plugin icon (recommended)
│   └── ...              # Other resource files
├── components/           # Components directory
│   ├── event_listener/  # Event listener components
│   ├── commands/        # Command components
│   └── tools/           # Tool components
├── requirements.txt      # Python dependencies (optional)
└── config/              # Configuration directory (optional)
```

## Multilingual README Specification

### File Location Specification

LangBot plugins support multilingual README documentation to provide localized plugin descriptions for users in different languages.

**Important Specifications:**

1. **`Root README.md (Required)`**
   * Must be written in **English**
   * Serves as the plugin's default documentation
   * Used as fallback when requested language version doesn't exist
2. **`readme/ Directory (Optional)`**
   * Used to store **non-English** README documents
   * File naming format: `README_{language_code}.md`

### Supported Language Codes

According to [RFC 4646](https://datatracker.ietf.org/doc/html/rfc4646) standard, LangBot currently supports the following language codes:

| Language            | Language Code   | Filename            | Location                  |
| ------------------- | --------------- | ------------------- | ------------------------- |
| English             | `en` or `en_US` | `README.md`         | **Plugin root directory** |
| Simplified Chinese  | `zh_Hans`       | `README_zh_Hans.md` | `readme/` directory       |
| Traditional Chinese | `zh_Hant`       | `README_zh_Hant.md` | `readme/` directory       |
| Japanese            | `ja_JP`         | `README_ja_JP.md`   | `readme/` directory       |
| Vietnamese          | `vi_VN`         | `README_vi_VN.md`   | `readme/` directory       |
| Thai                | `th_TH`         | `README_th_TH.md`   | `readme/` directory       |
| Spanish             | `es_ES`         | `README_es_ES.md`   | `readme/` directory       |

### Example Directory Structure

```
MyPlugin/
├── README.md                    # ✅ English version (required, in root)
└── readme/                      # ✅ Multilingual directory
    ├── README_zh_Hans.md       # ✅ Simplified Chinese
    ├── README_ja_JP.md         # ✅ Japanese
    └── README_zh_Hant.md       # ✅ Traditional Chinese
```

### Incorrect Examples

❌ **Wrong: Placing English README in readme/ directory**

```
MyPlugin/
├── readme/
│   ├── README_en.md        # ❌ Wrong: English should not be in readme/
│   └── README_zh_Hans.md
```

❌ **Wrong: Root README.md contains non-English content**

```markdown theme={null}
# MyPlugin

This is a plugin...

这是一个插件...    # ❌ Wrong: Root README.md should only contain English
```

### README Language Fallback Logic

When a user requests a README in a specific language, LangBot will search in the following order:

1. Try to read `readme/README_{language_code}.md`
2. If not found, fall back to root `README.md` (English version)

**Examples:**

* User requests Simplified Chinese (`zh_Hans`)
  * → Look for `readme/README_zh_Hans.md`
  * → If not found, return `README.md` (English version)
* User requests Japanese (`ja_JP`)
  * → Look for `readme/README_ja_JP.md`
  * → If not found, return `README.md` (English version)

## Resource Files Directory

### assets/ Directory

The `assets/` directory is used to store plugin static resource files.

**Recommended Structure:**

```
assets/
├── icon.svg              # Plugin icon (SVG format recommended)
├── example.png           # Example image
├── screenshot1.png       # Screenshot
└── logo.png             # Logo image
```

**Icon Specifications:**

* Recommended to use `icon.svg` as plugin icon
* Supported formats: `.svg`, `.png`, `.jpg`, `.jpeg`, `.gif`
* Recommended size: At least 256x256 pixels
* Reference in `manifest.yaml`: `icon: assets/icon.svg`

### Referencing Resources in README

In README documentation, you can use relative paths to reference images in the assets/ directory:

```markdown theme={null}
# MyPlugin

![Example](./assets/example.png)

![Screenshot](./assets/screenshot1.png)
```

**Note:** After uploading plugins to LangBot Space, resource files will be automatically processed and hosted, and images will display correctly when users view the README.

## Components Directory

Plugin functionality is implemented through components, which should be organized by type in the `components/` directory:

```
components/
├── event_listener/       # Event listeners
│   ├── on_message.py
│   └── on_message.yaml
├── commands/            # Commands
│   ├── hello.py
│   └── hello.yaml
└── tools/               # Tools
    ├── search.py
    └── search.yaml
```

For detailed component development specifications, please refer to: [Adding Components](/en/plugin/dev/components/add)

## Configuration Files

### manifest.yaml

The plugin manifest file `manifest.yaml` is the core configuration file, containing plugin metadata, configuration items, component lists, and other information.

For detailed instructions, please refer to: [Complete Plugin Configuration Information](/en/plugin/dev/basic-info)

### requirements.txt

If the plugin requires additional Python dependencies, create a `requirements.txt` file in the root directory:

```
requests>=2.28.0
beautifulsoup4>=4.11.0
pillow>=9.0.0
```

**Note:** LangBot will automatically install dependencies listed in `requirements.txt` when installing the plugin.

## Related Documentation

* [Basic Tutorial](/en/plugin/dev/tutor) - Learn how to create your first plugin
* [Complete Plugin Configuration Information](/en/plugin/dev/basic-info) - Configure manifest.yaml
* [Adding Components](/en/plugin/dev/components/add) - Develop plugin components
* [Publish to Marketplace](/en/plugin/dev/publish/market) - Distribute your plugin