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I’m trying to make an extension that generates a file using base data and then re-uploads that file back to Airtable. However, I’m not able to find any way to access the upload attachment HTTP endpoint from within the Blocks SDK. The API reference only shows examples of “uploading” attachments using public URLs.

Is there any way to access this functionality (properly) from within a blocks extension? Or alternatively some sort of internal PAT or similar I can use to make the POST request without hardcoding something that will be exposed in the browser?

Hey ​@matt.s  Thanks for submitting such a great question! Because your question hasn't yet received an answer/solution from the Community, we've created s support case on your behalf with our Airtable Expert Team to get you the quickest response possible. Please check your email for follow-up and your case reference number—and continue to follow this thread as new community members tend to share answers and add knowledgeable responses regularly.