[Home](./index.md) > [@empathyco/x-components](./x-components.md) > [XComponentBusAPI](./x-components.xcomponentbusapi.md) ## XComponentBusAPI interface API for emitting and subscribing to events of the XBus. **Signature:** ```typescript export interface XComponentBusAPI ``` ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [emit](./x-components.xcomponentbusapi.emit.md) | | ((event: [PropsWithType](./x-components.propswithtype.md)<[XEventsTypes](./x-components.xeventstypes.md), void>) => void) & (<Event extends [XEvent](./x-components.xevent.md)>(event: Event, payload: [XEventPayload](./x-components.xeventpayload.md)<Event>, metadata?: Omit<[WireMetadata](./x-components.wiremetadata.md), 'moduleName' \| 'origin' \| 'location'>) => void) | Emits an event with the void type associated as payload. | | [on](./x-components.xcomponentbusapi.on.md) | | [XBus](./x-components.xbus.md)<[XEventsTypes](./x-components.xeventstypes.md), [WireMetadata](./x-components.wiremetadata.md)>\['on'\] | Retrieves an observable for an event. |