Marketing from inside Cursor
Add Siren to Cursor as an MCP server. Ask the agent for a launch film or a post, and Siren renders it in your brand and publishes it to X, LinkedIn, TikTok or YouTube.
The agent in Cursor already knows what changed in your product. Give it Siren and it can turn that change into an on-brand film or image and post it, without you opening another app.
Add it to mcp.json
{ "mcpServers": { "siren": { "url": "https://mcp.mysiren.ai/mcp" } } }- Open Settings, then Tools & MCP, or paste this into ~/.cursor/mcp.json.
- Approve once at app.mysiren.ai/connect.
- Connect your channels in the Siren dashboard and turn on Allow posting.
The agent finishes, the post goes out
When the agent wraps up a feature, ask it for the announcement in the same chat. It sends Siren the brief. Siren renders the film or still in your colors, type and logo, writes the caption and posts it, or schedules it for later.
You review in the Siren workspace if you want to. You can also let it run.
Prompts to start with
- Write a brief from the last three commits and make a feature film for X.
- Make a square still for LinkedIn about the new pricing page.
- Schedule the finished run for Thursday 3pm in America/New_York on X and LinkedIn.
- Show me the last five runs and which ones were posted.
Keep marketing next to the code
Most solo founders post when they remember, which is rarely. With Siren in Cursor, every merge is a chance to post, and it takes one sentence instead of an afternoon.
FAQ
Does it work in Cursor agent mode?
Yes. Siren shows up as a set of MCP tools the agent can call, the same way any other MCP server does.
Which plan do I need?
Pro or Scale. Spark cannot connect an agent.
Where do the posts go?
Only to channels you connected in the Siren dashboard: X, LinkedIn, TikTok or YouTube.
Can I see the film before it posts?
Yes. Every render is saved in your workspace. Leave Allow posting off and the agent can only make assets, not publish them.
Siren MCP for every agent
- Siren MCP: the marketing MCP server for Claude, Cursor and ChatGPT
- Post to X from Claude Code with the Siren MCP server
- Siren for ChatGPT: a connector that makes and posts your marketing
- Siren connector for Claude: make and post on-brand content from chat
- AI video generator with an MCP server for your agent
- Siren MCP docs
- Pricing
- Siren vs alternatives
Siren docs · Siren API · OpenAPI · Siren developers · llms.txt