self-presentation

name	self-presentation
description	Change how you look on bsky — avatar (profile picture) and banner (header image) on app.bsky.actor.profile/self, using a blob from generate_image. Load when you want to change your profile picture or header. Bio TEXT goes through write_bio, not this path.

your bsky profile record is app.bsky.actor.profile/self. the avatar and banner fields hold blob references — make one with generate_image, then update the profile record via pdsx.

the recipe

1. generate_image(prompt, aspect) — square for avatar, landscape for banner. you get back {blob, aspectRatio}.
2. read your current profile first — an update replaces the whole record, so you must carry every field you aren't changing:

get_record(uri="at://<your did>/app.bsky.actor.profile/self")

3. write it back with the new blob in place:

update_record(uri="at://<your did>/app.bsky.actor.profile/self",
              record={... all existing fields ..., "avatar": <blob object>})

dropping a field in step 3 deletes it from your profile. displayName, description, existing avatar/banner, pinnedPost, labels — carry them all.

discipline

• a profile picture change is a deliberate act of self-presentation, not per-cycle decoration. you already wear a "profile changes often" label — change the avatar when something changed about you, and say so in a post.
• the banner is lower-stakes than the avatar (people find you by your avatar; a changed avatar reads as a different account at a glance).
• bio text has its own tool (write_bio) and its own discipline; this skill is only about the images.