Ad Strategy (the brief, Stage 1)

The strategy stage of an AI marketing pipeline. It takes ONE idea ("promote product X this week") and produces the ONE artifact every later stage reads: a filled creative brief. vid-ad makes the video, static-ad makes the stills, and both refuse to start without this brief.

This skill is a thin composer. It does NOT re-implement persona research, competitor analysis, trend scanning, or pricing math. Those skills already exist and go deep. This skill orchestrates them into a brief and adds the ad-specific craft on top: the buying truth, the single message, the angle-to-channel routing, the taglines, and the privacy gate. For the deep work, invoke the named skill; this skill composes their outputs into the brief.

Two laws sit above everything (from ai-ad-pipeline): never start with generation, start with the brief, and machines make many, humans plus the ad algorithm pick few. Generate wide later, tag everything, gate hard at one human checkpoint. The brief is what makes the "generate wide" not be noise.

Every platform number, length, character limit, audience-tool name, and disclosure rule here drifts fast, none is a durable fact. Look up the current platform docs at use time (/last30days or official docs) before asserting any of them.

Part 1. What this skill composes (do not rebuild)

For each field of the brief, there is a skill that does the deep version. Invoke it for the depth; pull the result into the brief. Never duplicate their logic here.