Siren. The marketing department you don’t have to hire

Siren (mysiren.ai) makes your marketing and posts it. Set your brand once, then type what you need: a launch video, an ad creative, a week of posts. Siren makes it in your brand, writes the caption, and posts it to X, LinkedIn, Instagram, TikTok or YouTube. Videos are motion graphics rendered from code, so the same prompt gives the same video. Images are painted from your prompt and your brand.

Use it from the dashboard, or from your AI agent: Siren is an MCP server for Claude Code, Cursor, ChatGPT and Claude, open on every paid plan. Plans: Spark $19, Pro $49 (adds video), Scale $149.

Siren docs · Siren API · Siren OpenAPI · Siren developers · llms.txt · Siren MCP · Compare · Pricing · Get started