action-builder (formerly seedance-prompt-rig, before that shot-builder-cinematic-action)

What it does. Turns locked references into live-action video prompts for ByteDance Seedance (1.0, 1.5 pro, 2.0, 2.5) on the Prompt Rig — three tiers sorted by how long each fact stays true: CONTEXT once per scene, BEATS one per shot, PROMPT SEGMENTS saved and reused across projects. 27 named blocks in an ALL-CAPS key grammar that round-trips through the ReelStack Sequence Builder.

What it owns. Action, staging, choreography, dialogue timed to clip length, performance ("dead eyes" fixes), reference role lines with explicit exclusions, one camera move per beat, positive locks instead of a negative wall, cuts kept inside each model's real budget, reference-to-video and video-to-video from a 3D blockout or previz (the reference governs camera and timing, the prompt governs the performance). Includes a linter and a post-render verification checklist.

Not for. Making the reference images (reference-builder) or motion graphics (mograph-builder).

Input	the brief, reference-builder tokens and images, a beat or shot list
Output	Seedance prompts in the rig grammar; saved PROMPT SEGMENTS packs
Feeds	any Seedance host (FAL, Kie, Higgsfield, ReelStack Sequence Builder)
Spends	nothing — the prompt is the product; rendering happens wherever you run Seedance

Files

• SKILL.md — the rig, the lifespan test, the 27 blocks, word budgets, v2v, linter, verification
• references/ — block catalogue, model budgets, action grammar, audio grammar, failure modes
• scripts/seedance.py — linter and assembler for .rig.md prompts

Setup

None. Python 3 for the linter only. Grammar unchanged from the two earlier names, so packs written under them still load.