Suddenly it works from both Quill and Sunlit. I’m going to chalk it up to a $5/mo Linode server that is overtaxed by my dumb projects. (you should use the promo code COREINT — I did!)

Micro.blog worked. Signed into Quill and tried to send a photo, got a 403 even though I had correct scope. Now testing a basic note from Quill… there’s clearly something wrong with my setup.