How do users install a completed MCPB bundle?

Users can install the server by simply dragging and dropping the .mcpb file onto the Claude Desktop application.

How is security handled in MCPB servers?

MCPB servers run with full user privileges. Developers are responsible for implementing their own sandboxing, path validation, and security checks within the tool handlers.

What is an MCPB file?

An MCPB is a packaged zip archive containing an MCP server, its manifest, and all necessary dependencies, allowing it to run on a user's machine without needing a developer toolchain.

When should I use MCPB instead of a remote server?

Choose MCPB when your server must interact with local files, drive desktop applications, or talk to localhost services. For cloud-only APIs, a remote HTTP server is preferred.

Does MCPB support Python dependencies?

Yes, Python dependencies can be vendored into the package and included in the bundle to ensure the server runs regardless of the user's local environment.

Build MCPB (Bundled Local MCP Servers)

Name: Build MCPB (Bundled Local MCP Servers)
Author: anthropics

byanthropics

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17,805

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Despliegue y DevOps

Guides the packaging and distribution of self-contained local Model Context Protocol (MCP) servers that include their own runtimes.

The build-mcpb skill provides a standardized framework for developers to package local MCP servers into .mcpb files, ensuring they run on a user's machine without requiring pre-installed runtimes like Node.js or Python. It covers the essential manifest schema, runtime bundling for Node and Python, and critical security protocols for handling local filesystem access. This skill is the primary reference for creating installable, high-performance local AI tools that interact with desktop applications, hardware APIs, and local data while maintaining a seamless user installation experience.

Características Principales

01Guidance on implementing install-time user configuration UI

02Bundling strategies for Node.js, Python, and native binaries

03Comprehensive manifest configuration for .mcpb bundles

04Detailed security patterns for local path validation and sandboxing

0517,805 GitHub stars

06Standardized workflows for the @anthropic-ai/mcpb toolchain

Casos de Uso

01Packaging an MCP server that automates local desktop software via OS-level APIs

02Shipping a local filesystem explorer that works out-of-the-box for non-technical users

03Distributing secure, private local data connectors that don't require cloud access

Características Principales

01Guidance on implementing install-time user configuration UI

02Bundling strategies for Node.js, Python, and native binaries

03Comprehensive manifest configuration for .mcpb bundles

04Detailed security patterns for local path validation and sandboxing

0517,805 GitHub stars

06Standardized workflows for the @anthropic-ai/mcpb toolchain

Casos de Uso

01Packaging an MCP server that automates local desktop software via OS-level APIs

02Shipping a local filesystem explorer that works out-of-the-box for non-technical users

03Distributing secure, private local data connectors that don't require cloud access