Ability to upload a CSV of products stock level

I’ve been posting to the ‘Import products by CSV file’ with CURL daily. However, recently the form is updated and I’m unable to update the products stock level automatically anymore.

I’m wondering if there is an API to upload CSV to update the stock level? I understand that there is an API to update individual product, but we are unable to use it for this purpose as it will hit the API limit.

Or an API to mass update multiples products stock level at once?