Every multi-scene production builds an asset bible: reference plates and a physical description for each subject so scenes stay consistent. The Cast library makes those subjects reusable — a character you liked in one video can walk into the next one looking the same.
See Subjects & consistency for how the bible works inside a single production.
Save a subject
When a production settles, save any subject from its bible:
POST /cast { runGroupId, subjectId, displayName?, kind? }The save is server-verified — Wavemaker resolves the plates and DNA from the run group’s settled bible; clients never supply the images. Kinds are person, setting, or product (People / Places / Things). GET /cast lists your org’s library; DELETE /cast/{id} removes an entry, and PATCH /cast/{id}/persona edits the description.
Reuse via the Cast chip
In chat, pick up to 6 saved subjects with the Cast chip before you Send. The production seeds its bible from your saved entries: stored plates are wired in directly as image grounds — no re-mint, so the face/look you approved is the one that appears. The chip is session-scoped; a new session starts empty.
A saved subject that no longer exists (or belongs to another org) fails the run up front rather than silently substituting a stranger.
Character Studio & world modules
You can also design a subject before any production, from Settings → Cast. Four world modules cover the same People / Places / Things split:
- Character studio — a person: name, physical DNA, optional photos
- Look studio — a wardrobe / styling package
- Location studio — a place
- Object studio — a product or prop
Create for this video stamps the module into your current session; the next Send authors the bible entry from your name/DNA/photos before minting plates, then the settled result is harvested into the library like any other subject.
Reference angle packs
Library subjects carry more than one view. In Studio / Worlds each subject gets an 8-azimuth orbit (plus a text-free reference sheet); production graphs consume the front + profile pair. If some extra angles failed to generate, POST /cast/{id}/angles/regen re-derives them from the stored front plate.
Living library (auto-harvest)
Successful productions automatically harvest their People, Places, and Things into the org Studio library when the bible settles — no manual save needed. Each harvest can be undone within 24 hours (POST /cast/harvest/{eventId}/undo); after that the window closes (410). Manual POST /cast still works and always wins on conflicts.