This tool lets users verify that a file in Puppet modules, metadata.json, conforms to the format that it is expected to have.

The metadata.json file is used when publishing a module to the public module repository on forge.puppet.com, or to a private module forge. With this information, you can expose dependencies to other modules, set Puppet version requirements and expose the module's license, author and other such metadata.

metadata-json-lint can be used directly, or it can be used through puppet-development-kit.