[ctrlaltdylan]

Pipedream has a similar paradigm, and Notion support as well.

https://pipedream.com/apps/notion

You can write your own "Sources" that can poll any API, it even includes deduping for free: https://pipedream.com/docs/components.

I build custom sources all of the time for scraping RSS feeds, WooCommerce stores, and then triggering low code workflows as if they are webhooks.

[Studywithdidi]

And Pipedream supports Svix[1] which means it has a top notch webhooks experience.

1: https://pipedream.com/apps/svix