What MCPB does
MCP Bundles (.mcpb) are zip archives containing a local MCP server and a manifest.json that describes the server and its capabilities, letting end users install a local MCP server with a single click. The repository provides the bundle specification, a CLI tool for creating bundles, and the code Claude for macOS and Windows uses to load and verify bundles; the project was renamed from DXT (Desktop Extensions).
Why teams reach for it: MCPB turns a local MCP server into one installable file that Claude for macOS and Windows can add with a single click.
How MCPB compares
Fields the vendor doesn't document are left blank here rather than guessed — a blank means nothing verified, not a "no."
- One Click Install Targets
- Claude for macOS and Windows
How will people and clients find it?
Registries & discovery tools are directories or catalogs that help people and AI clients find MCP servers that already exist.