Plugins

Plugin	Runtime	Dependency	Host surface
Search	.NET MCP + Microsoft Agent Framework	None	MCP
Dotnet Quality	Copilot SDK .NET agent	None	Standalone .NET agent
Planning	Markdown skill + Node.js script	Node.js 22.12+	Agent skill

Planning provides the durable-plans skill. It persists task events and generated checkpoints in the target workspace, with explicit revision checks, evidence gates, and dependency invalidation.

Each plugin is an independent release boundary under plugins/<id>/. Include only the host surfaces that plugin provides:

Agents, skills, commands, and MCPs are managed through their owning plugin. Do not add these surfaces as unrelated repository-level assets or duplicate them under host metadata.

.claude-plugin/plugin.json for Claude metadata.
.codex-plugin/plugin.json for Codex metadata.
agents/ for executable or host-native agents.
skills/<name>/SKILL.md for reusable skills.
commands/ for host commands when needed.
mcps/ for executable MCP projects and MCP metadata.

Executable source stays inside its owning plugin; tests and evaluations stay under the repository-level tests/<id>/ directories.

Plugin IDs, versions, and host registrations live in .claude-plugin/marketplace.json and .agents/plugins/marketplace.json.