# Siren

**Siren Ai** is the deterministic visual marketing engine at [mysiren.ai](https://mysiren.ai). One brief becomes on-brand cards, carousels, and short video for any brand, on every channel. React templates render through headless Chrome and FFmpeg. Not probabilistic image generation. Not prompt roulette.

**Loop:** Brand DNA → brief → on-brand asset → post → Hits (real engagement).

**Honesty:** Siren is a generation + posting product with brand-fit scoring. It is not a human creative agency and not a guarantee of virality.

## Product

- [Features](https://mysiren.ai/features)
- [How it works](https://mysiren.ai/how-it-works)
- [Pricing](https://mysiren.ai/pricing): Spark $19 · Pro $49 · Scale $149. Onboarding first post is free.
- [Compare](https://mysiren.ai/compare)

## Developers

- [Siren API docs](https://mysiren.ai/api)
- [Siren OpenAPI spec](https://mysiren.ai/openapi.json)
- [Siren docs](https://mysiren.ai/docs)
- [Siren developers](https://mysiren.ai/developers)
- [Full API plain text](https://mysiren.ai/docs.txt)
- [llms.txt](https://mysiren.ai/llms.txt)
- [MCP](https://mysiren.ai/docs/mcp): `https://mcp.mysiren.ai/mcp`
- CLI: `pip install mysiren` then `siren --help`

## Company

Siren Ai, Inc. (Delaware). Support: support@mysiren.ai. Dashboard: https://app.mysiren.ai