One portable package for skills and MCP servers.

Agent Plugins is an open, vendor-neutral package standard. It gives plugin authors one predictable directory structure for reusable Agent Skills and MCP server configuration.

The portable package

Every package starts with a root plugin.json. Skills live in immediate child directories under skills/. MCP connections live in a root mcp.json. Client-specific behavior belongs in a reverse-domain extension namespace.

What version 1 covers

The first specification standardizes two component types: Agent Skills and MCP servers. Distribution, installation, permissions, updates, and interface behavior remain under each client's control.

Compatible clients

Launch support includes Codex, ChatGPT, Cursor, GitHub Copilot, Kiro, and VS Code. Each client can adopt skills and MCP transports at its own pace.