Content type
bluesky_post — caption optional. Up to 4 images or 1 video (never mixed). GIFs are kept as GIF. No meta keys.
Limits
JPEG / PNG / GIF / WebP. Video MP4 or MOV.
Platforms
Bluesky
Posts with images or video. Connect hosts the app-password form.
Connect hosts an app-password form — not the Bluesky OAuth dialog. How the browser flow works: Connect accounts.