Siren

Name: Siren
Author: Hexahedral-Inc

by Hexahedral-Incversion 1.1.0i★ –iRuns in the cloud

Registry nameai.mysiren/siren

Install

Overview

Description from the maker (original English)

Deterministic visual marketing engine. Your agent plans, renders, and posts on-brand campaigns.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Marketing & social media

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.mysiren.ai/mcp

Run this in your terminal

claude mcp add --transport http siren https://mcp.mysiren.ai/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "siren": {
      "url": "https://mcp.mysiren.ai/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "siren": {
      "type": "http",
      "url": "https://mcp.mysiren.ai/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.mysiren.ai/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

! Caution
Maker matches the repo
The publisher (mysiren.ai) is not the repo owner (Hexahedral-Inc); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Marketing & social mediai

More stars than 0% of the other 2987 servers in this category
Published to the registry more recently than 33% of the other 2987 servers in this category
Basic checks equal to or better than 34% of the other 2987 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Siren safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: MCP YouTube Transcript, Google Analytics MCP, BibiGPT YouTube Video Summarizer

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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BibiGPT YouTube Video Summarizer

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AI video summarizer: summarize and transcribe YouTube, Bilibili, TikTok and podcast videos.

Runs in the cloud★ 137MITUpdated 10 days ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

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.

Siren

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Marketing & social mediai

Common questions

Alternatives

MCP YouTube Transcript

Google Analytics MCP

BibiGPT YouTube Video Summarizer

README from the maker

Siren MCP

Connect

Tools

Example

This repo