Plugin Dev

Author, scaffold, or edit a plugin once in Claude Code format, then generate the Codex, Antigravity, and Cursor manifests so one directory loads in all four runtimes. Use when creating/scaffolding a new plugin, editing a plugin or its manifest, wiring a marketplace entry, running the multi-format generator, or when the user mentions "plugin.json", ".claude-plugin", ".codex-plugin", ".cursor-plugin", "multi-format", "marketplace.json", "scaffold a plugin", or "Codex/Cursor/Antigravity plugin".

Thoroughly validate a Claude Code plugin's manifest, directory structure, commands, agents, skills, hooks, and MCP config, then report issues by severity. Use when the user asks to validate, check, audit, or lint a plugin, verify a plugin.json or plugin structure, debug why a plugin won't load, or mentions "plugin validate", "invalid manifest", or "plugin not loading".

Convert a Gemini CLI extension into a Claude Code plugin, preserving functionality and backwards compatibility. Use when the user wants to migrate/port a Gemini extension to Claude Code, convert gemini-extension.json to plugin.json, adapt GEMINI.md context or Gemini tools/hooks, or mentions "gemini-extension.json", "GEMINI.md", or "migrate Gemini".