# Addons

Addons are supplementary products for your WordPress products that extend the functionality of a parent product. They allow for modular features and additional revenue streams.

## See Also[​](#see-also "Direct link to See Also")

How to:

* [create and manage add-ons](https://freemius.com/help/help/documentation/wordpress/selling-add-ons-extensions/.md) for your primary WordPress products.
* [create and manage other products](https://freemius.com/help/help/api/products/.md#see-also).

## API Operations[​](#api-operations "Direct link to API Operations")

This section explains operations related to an addon of a product.

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[GETList all plans/products/{product\_id}/addons/{addon\_id}/plans.json](https://freemius.com/help/help/api/addons/list-plans/.md)[GETList all pricings/products/{product\_id}/addons/{addon\_id}/plans/{plan\_id}/pricing.json](https://freemius.com/help/help/api/addons/list-pricings/.md)[GETList all plan's features/products/{product\_id}/addons/{addon\_id}/plans/{plan\_id}/features.json](https://freemius.com/help/help/api/addons/list-plans-features/.md)