mopidy.ext – Extension API

If you want to learn how to make Mopidy extensions, read Extension development.

class mopidy.ext.Extension[source]

Base class for Mopidy extensions

dist_name: str

The extension’s distribution name, as registered on PyPI

Example: Mopidy-Soundspot

ext_name: str

The extension’s short name, as used in and as config section name

Example: soundspot

classmethod get_cache_dir(config: Config) Path[source]

Get or create cache directory for the extension.

Use this directory to cache data that can safely be thrown away.


config – the Mopidy config object



get_command() Command | None[source]

Command to expose to command line users running mopidy.


Instance of a Command class.

classmethod get_config_dir(config: Config) Path[source]

Get or create configuration directory for the extension.


config – the Mopidy config object



get_config_schema() ConfigSchema[source]

The extension’s config validation schema



classmethod get_data_dir(config: Config) Path[source]

Get or create data directory for the extension.

Use this directory to store data that should be persistent.


config – the Mopidy config object



get_default_config() str[source]

The extension’s default config as a text string.



setup(registry: Registry) None[source]

Register the extension’s components in the extension Registry.

For example, to register a backend:

def setup(self, registry):
    from .backend import SoundspotBackend
    registry.add('backend', SoundspotBackend)

See Registry for a list of registry keys with a special meaning. Mopidy will instantiate and start any classes registered under the frontend and backend registry keys.

This method can also be used for other setup tasks not involving the extension registry.


registry (Registry) – the extension registry

validate_environment() None[source]

Checks if the extension can run in the current environment.

Dependencies described by are checked by Mopidy, so you should not check their presence here.

If a problem is found, raise ExtensionError with a message explaining the issue.





version: str

The extension’s version

Should match the __version__ attribute on the extension’s main Python module and the version registered on PyPI.

class mopidy.ext.ExtensionData(extension, entry_point, config_schema, config_defaults, command)[source]
command: Command | None

Alias for field number 4

config_defaults: Any

Alias for field number 3

config_schema: ConfigSchema

Alias for field number 2

entry_point: Any

Alias for field number 1

extension: 'Extension'

Alias for field number 0

class mopidy.ext.Registry[source]

Registry of components provided by Mopidy extensions.

Passed to the setup() method of all extensions. The registry can be used like a dict of string keys and lists.

Some keys have a special meaning, including, but not limited to:

  • backend is used for Mopidy backend classes.

  • frontend is used for Mopidy frontend classes.

Extensions can use the registry for allow other to extend the extension itself. For example the Mopidy-Local historically used the local:library key to allow other extensions to register library providers for Mopidy-Local to use. Extensions should namespace custom keys with the extension’s ext_name, e.g. local:foo or http:bar.

add(name: str, cls: Type[Any]) None[source]

Add a component to the registry.

Multiple classes can be registered to the same name.

mopidy.ext.load_extensions() List[ExtensionData][source]

Find all installed extensions.


list of installed extensions

mopidy.ext.validate_extension_data(data: ExtensionData) bool[source]

Verify extension’s dependencies and environment.


extensions – an extension to check


if extension should be run