With Airtable automations I see them in the test output results, but I’m not able to select them as variables to auto fill a field.
I know 3th party tools like make/zapier/miniextension are able to do this for me, but I don’t like to use them as it adds complexity to the setup.
However, using an external tool like Make.com is my favorite, because it’s essentially “no code”, and it’s free for up to 1,000 operations per month.
Below is a screenshot of all the information you can grab from an attachment field with Make — which is all the same information that the REST API returns.
You may want to also send an email to Airtable technical support at firstname.lastname@example.org to request that they natively support this feature in the future.