Lacuna Music

Name: Lacuna Music
Author: JOYLINK-LTD

by JOYLINK-LTDversion 0.3.4i★ –iComputer or cloud

Registry nameio.github.JOYLINK-LTD/lacuna-mcp

Install

Overview

Description from the maker (original English)

Generate AI music via the Lacuna Music API from MCP clients like Claude Desktop & Code.

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 checksi1 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: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Design, images & audio
You need to fill in: LACUNA_API_KEY

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: LACUNA_API_KEY, LACUNA_BASE_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

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://www.lacuna.fm/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "lacuna": {
      "command": "npx",
      "args": [
        "-y",
        "lacuna-mcp"
      ],
      "env": {
        "LACUNA_API_KEY": "your-value",
        "LACUNA_BASE_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http lacuna https://www.lacuna.fm/mcp

Or run it on your computer

claude mcp add lacuna --env LACUNA_API_KEY=your-value --env LACUNA_BASE_URL=your-value -- npx -y lacuna-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "lacuna": {
      "url": "https://www.lacuna.fm/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "lacuna": {
      "command": "npx",
      "args": [
        "-y",
        "lacuna-mcp"
      ],
      "env": {
        "LACUNA_API_KEY": "your-value",
        "LACUNA_BASE_URL": "your-value"
      }
    }
  }
}

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": {
    "lacuna": {
      "type": "http",
      "url": "https://www.lacuna.fm/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "lacuna": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lacuna-mcp"
      ],
      "env": {
        "LACUNA_API_KEY": "your-value",
        "LACUNA_BASE_URL": "your-value"
      }
    }
  }
}

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://www.lacuna.fm/mcp

Menu names can differ slightly by plan and over time.

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

Values you fill in

LACUNA_API_KEY secret required env
Lacuna API key from https://www.lacuna.fm/profile/api
LACUNA_BASE_URL env
Override the API base URL (optional).

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account JOYLINK-LTD, which owns the repo
… 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 Design, images & audioi

More stars than 0% of the other 2762 servers in this category
Published to the registry more recently than 22% of the other 2762 servers in this category
Basic checks equal to or better than 100% of the other 2762 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 Lacuna Music safe?

It passed 1 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?

You need to fill in: LACUNA_API_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.4) reached the registry 3 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: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

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

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Runs on your computer★ 16,165MITUpdated 5 months ago

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Figma MCP Server

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Figma’s official server gives AI your design data so it can turn designs into code or describe them accurately. Connects to Figma’s cloud.

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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.

lacuna-mcp

Model Context Protocol server for the Lacuna Music API. Lets MCP-compatible clients (Claude Desktop, Claude Code, Cursor, Zed, Continue, etc.) generate AI music as part of an agent loop.

Looking for the SDK or CLI? See lacuna-sdk and lacuna-toolkit.

Installation

The server is published as a single npm package and runs over stdio. No install step is needed — your MCP client launches it via npx.

npx lacuna-mcp

Configuration

The server reads its configuration from environment variables:

Variable	Required	Description
`LACUNA_API_KEY`	yes	API key from your profile dashboard. Begins with `lyr_live_`.
`LACUNA_BASE_URL`	no	Override the API base URL (e.g. for staging).

Music API access requires the Pro plan or above.

Claude Desktop

Add an entry to claude_desktop_config.json:

"mcpServers": { "lacuna": { "command": "npx", "args": ["-y", "lacuna-mcp"], "env": { "LACUNA_API_KEY": "lyr_live_..." } } } }

The config file lives at:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Claude Code

claude mcp add lacuna -- npx -y lacuna-mcp

Then export the key in your shell or set it via your client's MCP settings.

Cursor / Zed / other MCP clients

Any client that speaks the Model Context Protocol over stdio can run npx -y lacuna-mcp as the command and pass LACUNA_API_KEY as an env var. Refer to your client's MCP setup docs for the exact JSON shape.

Tools

Tool	Description
`generate_music`	Create a music generation task. Returns a `pending` task immediately.
`get_generation`	Retrieve the current state of a generation task by id.
`wait_for_generation`	Poll a task until it reaches a terminal state (`ready` or `failed`) or the timeout elapses.

`generate_music`

Parameter	Type	Description
`style`	`string` (required)	Style description, e.g. `"pop, female vocal, 120 bpm, energetic"`.
`title`	`string` (required)	Track title.
`lyrics`	`string`	Required unless `instrumental` is `true`.
`instrumental`	`boolean`	Generate an instrumental track. Default `false`.
`model`	`"aether" \	"echo"`	Generation model. Defaults to `aether` (Lacuna Aether).
`vocal_gender`	`"m" \	"f"`	Lead vocal hint (`aether` only).
`negative_tags`	`string`	Style tags to avoid (`aether` only).
`style_weight`	`number` (0–1)	`aether` only.
`weirdness_constraint`	`number` (0–1)	`aether` only.
`audio_weight`	`number` (0–1)	`aether` only.

Credits are deducted on creation and refunded automatically if the upstream provider fails.

`get_generation`

Parameter	Type	Description
`id`	`string`	Generation task id, returned by `generate_music`.

`wait_for_generation`

Parameter	Type	Description
`id`	`string`	Generation task id.
`poll_interval_seconds`	`number`	Polling interval. Default 5.
`timeout_seconds`	`number`	Total timeout. Default 600 (10 minutes).

Requirements

Node.js 18 or newer.
An API key from a Lacuna Pro plan or above.

Lacuna Music

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

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 Design, images & audioi

Common questions

Alternatives

Figma Context MCP

Claude Real Video

Figma MCP Server

README from the maker

lacuna-mcp

Installation

Configuration

Claude Desktop

Claude Code

Cursor / Zed / other MCP clients

Tools

generate_music

get_generation

wait_for_generation

Requirements

License

`generate_music`

`get_generation`

`wait_for_generation`