Getting started in 8 minutes
This is the first eight minutes. Sign up, set Brand DNA, generate one branded asset, check it against your Brand DNA, and decide whether to post. Onboarding includes one free first post. Start Spark or Pro for further generates.
1. Sign up
Create an account at app.mysiren.ai/signup. Email and password are enough. Onboarding covers Brand DNA and your first post. Start Spark or Pro for credits, full-resolution assets, posting, videos and the API, or buy one launch video for $9.99.
2. Set your Brand DNA (4 minutes)
On first login you land on the Brand DNA configurator. Set five things:
- Tonal archetype. One of nine: Trustworthy, Builder, Aspirational, Playful, Authoritative, Contrarian, Empathetic, Pragmatic, Edgy. This shapes voice on every generation.
- Colors. Primary and accent at minimum. Optional secondary if the brand has one.
- Logo. PNG, JPG, or WebP. Siren uses it in templates that have a logo slot.
- Banned words. Terms the LLM must not produce. Server-enforced.
- Required disclaimers. Text that must appear on regulated content. Server-locked. The LLM does not author it.
See Brand DNA. What each field does for the full reference. Defaults are usable. You can tighten the configuration later.
3. Type your first prompt (1 minute)
Open Campaigns and type one line. Say what you want and the angle: "a 20 second video about our new export button, for X" or "a still announcing we passed 1,000 users". Say whether a video should have voiceover; if you do not, Siren asks once, and no answer means music and motion only.
Tip. A prompt works when it has an angle, not only a topic. "Q2 update" is a topic. "Q2 update: we shipped less and it performed better" is a prompt.
4. Watch it render (a few minutes)
- Video. Siren picks one of its video types, writes the words into it, and renders it from code with your Brand DNA, music and sound. The same prompt gives the same video. Videos are on every plan.
- Still. Siren writes the picture from your prompt and Brand DNA, and an image model paints it.
The finished asset lands in your workspace with a caption per platform. Look at it before anything posts.
5. Post, schedule, or save
If you have connected a channel (Settings → Connected Accounts) and started a plan, you can post now or Schedule a sequential drop in your local time. Siren stores an audit row for every dispatch. After the free onboarding post, new generates need a paid plan and credits. Tweaks and variants cost credits too.
What to do next
- Connect your channels. Settings → Connected Accounts. Each platform uses OAuth. Tokens are stored encrypted.
- Connect an agent (every plan). Add
https://mcp.mysiren.ai/mcpin Claude Code, Claude, Cursor, ChatGPT, or Grok. Spark included, videos too. See Connect an agent over MCP. - Generate three more prompts. Compare asset types. Tweaks re-render the same seed and cost credits.
- Watch Hits. After you post through Siren, real engagement shows which angles worked so the next prompt is sharper.