Seedance 2.5 Playbook — the operating rules, public edition

What you get

Two documents, written in the operator's own voice and cited to BytePlus's public documentation:

• PLAYBOOK.md — task types and the parameters each one locks; the face-input rule (why reference faces get rejected and what to do instead); the official prompt format and a working grammar for it; reference-asset priority; the trusted asset library; an edit-don't-reroll loop with the cost arithmetic; operational limits; a coverage grammar for vertical dialogue scenes; a pre-flight checklist.
• CONTRACT.md — the parameter contract per task type: locks, ceilings, and what the API rejects at submit time.
• REDACTION-LOG.md — what was removed from the internal edition and why, so nothing reads as a partial leak.

What it is not

No account, no endpoint, no credentials, no cast assets, no show content. Not affiliated with BytePlus or ByteDance.

The honest claim

No token-saving or quality figure is published for this pack, because the differential measurement this catalogue requires for knowledge packs (the same task run with and without it) has not been done. What is published is the provenance: these rules were learned across a real production run and are stated with the failure each one prevents.

Delivery

Packed as source. Reserved licence: use inside your own productions; no resale of the pack.