siren

MCP serverAI & models

Siren lets your AI plan, render, and post visual marketing campaigns that stay on brand. It is deterministic, so the same brief produces the same visuals every time. It is community built, with its code available at github.com/hexahedral-inc/siren.

Use siren in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add siren and connect your AI. About a minute.

Claude ChatGPT Ahel Desktop

Also: Claude Code · Cursor · Codex

Then ask your AI: use siren to get account

No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.

Details

Available today. Use it from your connected AI after setup.

No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.

Add Siren, then give your AI a brief describing the campaign you want. Ask it to plan and render the visuals, and review the results before it posts.

sirenStart free

What your AI can do with it

Plan visual marketing campaigns from a brief
Render the visuals for a campaign
Post finished campaigns
Keep every asset consistent with your brand
Reproduce the same output from the same brief every time

Install siren

The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.

Claude Code
claude mcp add --transport http --scope user siren 'https://mcp.mysiren.ai/mcp'
Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://mcp.mysiren.ai/mcp
Add a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=siren&config=eyJ1cmwiOiJodHRwczovL21jcC5teXNpcmVuLmFpL21jcCJ9
Open the link and Cursor adds the server at that address.
ChatGPT
https://mcp.mysiren.ai/mcp
In Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add siren --url 'https://mcp.mysiren.ai/mcp'
Run it once, then sign in with codex mcp login siren if the server asks for an account.

From the project's README

As published by hexahedral-inc/siren-mcp in README.md.

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	One video is $9.99 once; plans start at $19 a month. MCP and videos are on every plan; credits are the only meter.

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, TikTok and YouTube (Instagram once Meta approves the app). 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.

Tools it offers (39)

What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.

get_account
list_runs
get_run
create_campaign
list_films
list_platinum_films
list_styles
describe_film
clarify_brief
render_asset
upload_media
edit_asset
post_run
schedule_post
get_brand_dna
update_brand_dna
list_product_screens
upload_product_screen
update_product_screen
delete_product_screen
upload_logo
get_mascot
create_mascot
mascot_step
list_people
add_person
delete_person
list_media
get_performance
list_posts

Signals

Last commit: Sep 2026

Advanced

Delivery: siren MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
Item type: mcp-server
Key: ai-mysiren-siren
Source: github.com/hexahedral-inc/siren-mcp
Hosted endpoint: https://mcp.mysiren.ai/mcp

github.com/hexahedral-inc/siren-mcp

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