Siren
Deterministic visual marketing engine. Your agent plans, renders, and posts on-brand campaigns.
Links
README
From the repo.
Siren MCP
Your agent makes the images, captions, and videos for your brand, then posts them to your socials. You show Siren the brand once. After that you type post this in Cursor, Claude, ChatGPT, Codex, or Grok and it goes out.
Remote MCP server, Streamable HTTP, OAuth 2.1. No API keys to copy.
| Server | https://mcp.mysiren.ai/mcp |
| Registry | ai.mysiren/siren |
| Docs | https://mysiren.ai/docs/mcp |
| Plans | Plans start at $19 per month. MCP is Pro and up. |
Connect
Claude Code
claude mcp add --transport http siren https://mcp.mysiren.ai/mcp
Claude (claude.ai): Settings → Connectors → Custom → https://mcp.mysiren.ai/mcp
Cursor: Settings → Tools & MCP → add a remote server, or in ~/.cursor/mcp.json:
{ "mcpServers": { "siren": { "url": "https://mcp.mysiren.ai/mcp" } } }
ChatGPT: Developer Mode on → Settings → Apps & Connectors → Create → https://mcp.mysiren.ai/mcp
Grok: grok.com/connectors → Custom, or grok mcp add --transport http siren https://mcp.mysiren.ai/mcp
The agent opens a consent page on app.mysiren.ai. Approve once. Posting stays off until you turn on Allow posting on that screen. Revoke any time under Developers.
Tools
| Tool | What it does |
|---|---|
get_account | Workspace, plan, credits, connected channels |
clarify_brief | Turns a one-line ask into a brief Siren can render |
create_campaign | Generates the asset. Optional scheduled_at, timezone, platforms |
render_asset | Renders a specific output type |
list_runs, get_run | Status and result URLs |
post_run | Publishes a finished run to your connected channels now |
schedule_post | Queues a finished run for a time in your timezone |
get_brand_dna, update_brand_dna | Read and patch the brand profile |
list_product_screens, upload_product_screen, update_product_screen, delete_product_screen | Product screenshots Siren can paint into assets |
studio_templates | The 33 Studio data-card types, families, and body fields |
studio_card | Render a Studio card. Optional live post |
studio_automate | Create a Studio profile; returns generate curl and hook URLs |
studio_schedule | Render a Studio card and queue a scheduled post |
Posts go through the channels already connected in the Siren dashboard: X, LinkedIn, Instagram, TikTok, YouTube. The agent never sees your platform tokens.
Example
> Post an update about the new export feature. Use the dashboard screenshot.
The agent calls clarify_brief, then create_campaign, waits on get_run, and calls post_run. One image or film, a caption, and the post, on brand every time.
This repo
Listing and connect docs. The server is hosted at mcp.mysiren.ai. Questions: open an issue or write to hello@mysiren.ai.
Siren · a thousand voices, one signature.
Config for your environment
Use the endpoint URL below in your config. No API key — you connect directly.
Tool
OS
Config file: ~/.cursor/mcp.json
{
"mcpServers": {
"mcp-server": {
"url": "https://mcp.mysiren.ai/mcp"
}
}
}Paste into mcpServers in the config file. Restart Cursor after saving.
If this MCP is also published on mcpchannel.ai, you can subscribe from Browse and use the gateway config there instead.