Plugin dev

Portable Agent Skills for coding agents, including Svelte/SvelteKit and workflow tooling skills.

Install

npx -y skills add spences10/skills --skill plugin-dev

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What its author says it does

Copied from the file, not written here

Validate Claude Code plugin projects. Use only for .claude-plugin manifests, plugin marketplaces, or claude plugin validation.

SKILL.md

2.3 KB, as published. Nobody here has run it

Plugin Development

Develop and distribute Claude Code plugins and marketplaces.

Quick Commands

# Validate marketplace/plugin
claude plugin validate .

# Test local install
/plugin marketplace add ./path/to/marketplace
/plugin install my-plugin@marketplace-name

# Check installed plugins
/plugin list

Marketplace Schema

Required fields in .claude-plugin/marketplace.json:

{
  "name": "marketplace-name",
  "owner": { "name": "Your Name" },
  "plugins": [
    {
      "name": "plugin-name",
      "source": "./plugins/plugin-name",
      "description": "What it does"
    }
  ]
}

Plugin Schema

Required field in .claude-plugin/plugin.json (only name is required):

{
  "name": "plugin-name",
  "description": "What it does",
  "version": "1.0.0"
}

The name is also the skill namespace — skills become /plugin-name:skill-name.

Development

# Test plugin locally without installing
claude --plugin-dir ./my-plugin

# Reload after changes (inside Claude Code)
/reload-plugins

Common Errors

Error	Fix
`owner: expected object`	Add `"owner": { "name": "..." }`
`plugins.0: expected object`	Change string array to object array
`source: Invalid input`	Use `./path/to/plugin` format
Components inside `.claude-plugin/`	Move `commands/`, `skills/`, etc. to plugin root

References

marketplace-schema.md - Full marketplace fields
plugin-schema.md - Full plugin fields
validation-guide.md - Debugging validation errors
distribution.md - Publishing, versioning, and release channels