Most content tools stop at the download. Siren keeps going: it posts, then reads what actually happened and uses it next time.

Generation

Prompt + Brand DNA → a video rendered from code, or a still painted from your prompt → a caption per platform. You can look at every asset in your workspace before it posts.

You approve

Nothing posts without your click, or without Allow posting turned on for an agent over MCP.

Hits

Likes, replies, reposts and views flow back when you post through Siren. Brand Memory (Pro and up) keeps the winners, and the next prompt leans on them.

Legacy note

Older materials referred to a "Pre-flight Audience Simulation." Siren does not run one. simulation.completed webhooks, if you still receive them, are legacy.