hello-world

Claude Plugin Monorepo Template

Template repository for bootstrapping high-quality Claude Code plugins with shared CI/CD and testing infrastructure.

Key Features

• Standard Plugin Layout: Follows best practices for Skills, Agents, Hooks, MCP, and LSP.
• Monorepo Ready: Designed to host multiple plugins under the plugins/ directory.
• Comprehensive Examples: The hello-world plugin demonstrates every available extension point.
• Shared CI/CD: Unified quality checks via trunk and GitHub Actions.
• Integration Tests: Automated smoke tests that validate manifest schemas, component discovery, and plugin installation (marketplace add + install + list/validate) across all plugins.

Repository Layout

.
├── plugins/                     # Container for all plugins
│   └── hello-world/             # Comprehensive sample plugin
│       ├── .claude-plugin/      # Plugin metadata (plugin.json)
│       ├── agents/              # Custom agent definitions
│       ├── skills/              # Model-invoked skills (SKILL.md)
│       ├── hooks/               # Event hook configurations
│       ├── .mcp.json            # MCP server configuration
│       └── .lsp.json            # LSP server configuration
├── integration_tests/           # Shared testing harness
│   ├── run.sh                   # Test orchestrator (scans plugins/)
│   ├── validate-manifest.sh     # Manifest JSON schema validator
│   └── ...
├── .github/workflows/           # GitHub Actions (Lint, Integration Tests)
├── Makefile                     # Task runner
└── README.md

Quickstart

1. Create a new repository from this template.
2. Explore the sample plugin in plugins/hello-world/ to see how components are defined.
3. Run local checks:

   make lint
   make test-integration-docker
   

Development

Adding a New Plugin

Create a new directory in plugins/ following the Standard Plugin Layout:

• plugins/<name>/.claude-plugin/plugin.json: Required manifest.
• plugins/<name>/skills/: Agent Skills folder.
• plugins/<name>/agents/: Subagent markdown files.
• plugins/<name>/hooks/: Event hook configurations.
• plugins/<name>/.mcp.json: MCP configurations.
• plugins/<name>/.lsp.json: LSP configurations.

Testing

The integration test runner (./integration_tests/run.sh) automatically discovers all directories in plugins/ that contain a .claude-plugin/plugin.json file.

• Run all tests: ./integration_tests/run.sh
• Verbose output: ./integration_tests/run.sh --verbose
• Skip loading tests (if Claude CLI is not installed): ./integration_tests/run.sh --skip-loading

Docker integration tests (make test-integration-docker) run the same suite inside a container and additionally run a plugin install test: they add the workspace as a marketplace, install each plugin with claude plugin install, and verify with claude plugin list. The same Docker flow runs in CI (job plugin-install-docker).

CI/CD

• Trunk Check: Runs linters and static analysis on every PR.
• Integration Tests: Automatically validates every plugin in the plugins/ directory.

License

Apache License 2.0. See LICENSE.