Build Mcpb

Packages a local MCP server with its runtime into a single .mcpb file that users can install without Node or Python on their machine. You'd reach for this when your server needs to read local files, control desktop apps, or talk to localhost services. Anthropic prefers remote MCP servers for most use cases, so don't pay the packaging tax unless you genuinely need local filesystem or OS-level access. The manifest lets you define install-time config like directory pickers, but there's no sandbox whatsoever. Your server runs with full user privileges, so path validation and security are entirely on you. Realistically, this is the "I need to ship something that touches the user's actual machine" path, not the default.

Install to Claude Code

npx -y skills add anthropics/claude-plugins-official --skill build-mcpb --agent claude-code