What
Infrastructure for creating, validating, packing, and unpacking MCP Bundle (MCPB) files — a packaging format for MCP server plugins.
Usage
mcpb pack # Create a .mcpb bundle from a directory
mcpb validate # Validate a manifest.jsonDetails
- Interactive manifest.json creation wizard with prompts for name, version, tools, prompts, screenshots, and more
.mcpbignoresupport to exclude files from bundles- Schema validation for manifest files
- Bundle unpacking and verification
- Supports Node.js and Python version constraints
- Platform compatibility settings (macOS, Linux, Windows)
Evidence
MCPB support (search for "A MCPB bundle", "mcpb pack", ".mcpbignore")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.