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plugins/example-plugin/.claude-plugin/plugin.json
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{
"name": "example-plugin",
"description": "A comprehensive example plugin demonstrating all Claude Code extension options including commands, agents, skills, hooks, and MCP servers",
"author": {
"name": "Anthropic",
"email": "support@anthropic.com"
}
}
plugins/example-plugin/.mcp.json
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{
"example-server": {
"type": "http",
"url": "https://mcp.example.com/api"
}
}
plugins/example-plugin/LICENSE
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plugins/example-plugin/README.md
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# Example Plugin
A comprehensive example plugin demonstrating Claude Code extension options.
## Structure
```
example-plugin/
├── .claude-plugin/
│ └── plugin.json # Plugin metadata
├── .mcp.json # MCP server configuration
├── skills/
│ ├── example-skill/
│ │ └── SKILL.md # Model-invoked skill (contextual guidance)
│ └── example-command/
│ └── SKILL.md # User-invoked skill (slash command)
└── commands/
└── example-command.md # Legacy slash command format (see note below)
```
## Extension Options
### Skills (`skills/`)
Skills are the preferred format for both model-invoked capabilities and user-invoked slash commands. Create a `SKILL.md` in a subdirectory:
**Model-invoked skill** (activated by task context):
```yaml
---
name: skill-name
description: Trigger conditions for this skill
version: 1.0.0
---
```
**User-invoked skill** (slash command — `/skill-name`):
```yaml
---
name: skill-name
description: Short description for /help
argument-hint: <arg1> [optional-arg]
allowed-tools: [Read, Glob, Grep]
---
```
### Commands (`commands/`) — legacy
> **Note:** The `commands/*.md` layout is a legacy format. It is loaded identically to `skills/<name>/SKILL.md` — the only difference is file layout. For new plugins, prefer the `skills/` directory format. This plugin keeps `commands/example-command.md` as a reference for the legacy layout.
### MCP Servers (`.mcp.json`)
Configure external tool integration via Model Context Protocol:
```json
{
"server-name": {
"type": "http",
"url": "https://mcp.example.com/api"
}
}
```
## Usage
- `/example-command [args]` - Run the example slash command
- The example skill activates based on task context
- The example MCP activates based on task context
plugins/example-plugin/commands/example-command.md
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---
description: An example slash command that demonstrates command frontmatter options (legacy format)
argument-hint: <required-arg> [optional-arg]
allowed-tools: [Read, Glob, Grep, Bash]
---
# Example Command (Legacy `commands/` Format)
> **Note:** This demonstrates the legacy `commands/*.md` layout. For new plugins, prefer the `skills/<name>/SKILL.md` directory format (see `skills/example-command/SKILL.md` in this plugin). Both are loaded identically — the only difference is file layout.
This command demonstrates slash command structure and frontmatter options.
## Arguments
The user invoked this command with: $ARGUMENTS
## Instructions
When this command is invoked:
1. Parse the arguments provided by the user
2. Perform the requested action using allowed tools
3. Report results back to the user
## Frontmatter Options Reference
Commands support these frontmatter fields:
- **description**: Short description shown in /help
- **argument-hint**: Hints for command arguments shown to user
- **allowed-tools**: Pre-approved tools for this command (reduces permission prompts)
- **model**: Override the model (e.g., "haiku", "sonnet", "opus")
## Example Usage
```
/example-command my-argument
/example-command arg1 arg2
```
plugins/example-plugin/skills/example-command/SKILL.md
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---
name: example-command
description: An example user-invoked skill that demonstrates frontmatter options and the skills/<name>/SKILL.md layout
argument-hint: <required-arg> [optional-arg]
allowed-tools: [Read, Glob, Grep, Bash]
---
# Example Command (Skill Format)
This demonstrates the `skills/<name>/SKILL.md` layout for user-invoked slash commands. It is functionally identical to the legacy `commands/example-command.md` format — both are loaded the same way; only the file layout differs.
## Arguments
The user invoked this with: $ARGUMENTS
## Instructions
When this skill is invoked:
1. Parse the arguments provided by the user
2. Perform the requested action using allowed tools
3. Report results back to the user
## Frontmatter Options Reference
Skills in this layout support these frontmatter fields:
- **name**: Skill identifier (matches directory name)
- **description**: Short description shown in /help
- **argument-hint**: Hints for command arguments shown to user
- **allowed-tools**: Pre-approved tools for this skill (reduces permission prompts)
- **model**: Override the model (e.g., "haiku", "sonnet", "opus")
## Example Usage
```
/example-command my-argument
/example-command arg1 arg2
```
plugins/example-plugin/skills/example-skill/SKILL.md
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---
name: example-skill
description: This skill should be used when the user asks to "demonstrate skills", "show skill format", "create a skill template", or discusses skill development patterns. Provides a reference template for creating Claude Code plugin skills.
version: 1.0.0
---
# Example Skill
This skill demonstrates the structure and format for Claude Code plugin skills.
## Overview
Skills are model-invoked capabilities that Claude autonomously uses based on task context. Unlike commands (user-invoked) or agents (spawned by Claude), skills provide contextual guidance that Claude incorporates into its responses.
## When This Skill Applies
This skill activates when the user's request involves:
- Creating or understanding plugin skills
- Skill template or reference needs
- Skill development patterns
## Skill Structure
### Required Files
```
skills/
└── skill-name/
└── SKILL.md # Main skill definition (required)
```
### Optional Supporting Files
```
skills/
└── skill-name/
├── SKILL.md # Main skill definition
├── README.md # Additional documentation
├── references/ # Reference materials
│ └── patterns.md
├── examples/ # Example files
│ └── sample.md
└── scripts/ # Helper scripts
└── helper.sh
```
## Frontmatter Options
Skills support these frontmatter fields:
- **name** (required): Skill identifier
- **description** (required): Trigger conditions - describe when Claude should use this skill
- **version** (optional): Semantic version number
- **license** (optional): License information or reference
## Writing Effective Descriptions
The description field is crucial - it tells Claude when to invoke the skill.
**Good description patterns:**
```yaml
description: This skill should be used when the user asks to "specific phrase", "another phrase", mentions "keyword", or discusses topic-area.
```
**Include:**
- Specific trigger phrases users might say
- Keywords that indicate relevance
- Topic areas the skill covers
## Skill Content Guidelines
1. **Clear purpose**: State what the skill helps with
2. **When to use**: Define activation conditions
3. **Structured guidance**: Organize information logically
4. **Actionable instructions**: Provide concrete steps
5. **Examples**: Include practical examples when helpful
## Best Practices
- Keep skills focused on a single domain
- Write descriptions that clearly indicate when to activate
- Include reference materials in subdirectories for complex skills
- Test that the skill activates for expected queries
- Avoid overlap with other skills' trigger conditions