Lacuna MCP

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

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

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Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "lacuna-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lacuna-toolkit"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

Lacuna developer tools

Open-source SDK, CLI, MCP server, and Agent Skill for the Lacuna Music API. Generate AI music programmatically from any Node 18+ runtime, your shell, an MCP-compatible client, or an AI coding agent that supports the Agent Skills standard.

Surface	Install	Use case
`lacuna-sdk`	`npm install lacuna-sdk`	TypeScript / JavaScript SDK with webhook verification.
`lacuna-toolkit`	`npx lacuna-toolkit`	Command-line interface for one-off generation, scripting, CI.
`lacuna-mcp`	`npx lacuna-mcp`	Model Context Protocol server for Claude Desktop, Claude Code, Cursor, etc.
`lacuna-music` skill	`npx skills add JOYLINK-LTD/lacuna-toolkit`	Agent Skill for Claude Code, Codex CLI, Cursor, and other tools that follow the SKILL.md standard.

The three npm packages are released together and share the same API surface. The skill is markdown-only and tracks the latest published packages.

Repository layout

Code

.
├── packages/
│   ├── sdk/                   →  npm: lacuna-sdk
│   ├── cli/                   →  npm: lacuna-toolkit
│   └── mcp/                   →  npm: lacuna-mcp
├── skills/
│   └── lacuna-music/SKILL.md  →  Agent Skill (skills.sh, skillsmp.com, etc.)
├── pnpm-workspace.yaml
├── tsconfig.base.json
└── package.json

This is a pnpm workspace. The CLI and MCP server depend on the SDK via workspace:*, which is rewritten to a real version range on publish. The skill is plain markdown and is not part of the workspace.

Development

pnpm install            # install all workspace deps
pnpm -r run build       # build every package
pnpm -r run typecheck   # typecheck every package
pnpm --filter lacuna-mcp run dev  # iterate on a single package

The SDK must be built before pnpm -r run typecheck can resolve the CLI/MCP packages' types. pnpm -r run build handles dependency order automatically.

Releasing

Each package versions independently from packages/<pkg>/package.json. Bump versions in lockstep, build, then publish:

# bump the version in all three package.jsons + packages/mcp/server.json
# (packages/sdk/src/version.ts is injected from package.json at build time — do not hand-edit)
pnpm -r run build
pnpm --filter lacuna-sdk publish --access public
pnpm --filter lacuna-toolkit publish --access public
pnpm --filter lacuna-mcp publish --access public

workspace:* references in dependencies are rewritten to the published version automatically (pnpm handles this).

Distributing the skill

The skill at skills/lacuna-music/ follows the Agent Skills open standard, so it works with Claude Code, Codex CLI, Cursor, and any other tool that loads SKILL.md files.

There is no submission step for skill marketplaces — they index public GitHub repos automatically:

skills.sh (Vercel Labs) ranks skills by anonymous install telemetry. Once the repo is public, anyone can install with npx skills add JOYLINK-LTD/lacuna-toolkit, and installs feed the leaderboard. The CLI auto-discovers SKILL.md files under skills/<name>/.
skillsmp.com and claudeskills.info crawl public GitHub repos that contain SKILL.md and a minimum of 2 stars.
The official anthropics/skills repo accepts community-contributed skills via PR if you want a canonical listing.

To verify discovery locally:

Terminal

npx skills add JOYLINK-LTD/lacuna-toolkit

This installs lacuna-music into ~/.claude/skills/lacuna-music/ (and the equivalent for other agents). Edits to skills/lacuna-music/SKILL.md show up on the next skills add.

License

MIT © Louis Tsang

Read the full README →View source on GitHub →

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Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars

Stargazers on the source repository.

Last commit

1mo ago

Most recent push to the default branch.

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Frequently Asked Questions about Lacuna MCP

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "lacuna-mcp": { "command": "npx", "args": ["-y","lacuna-toolkit"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

11/13 checks healthy over the last 45d

40Quality signal: Fair · 40/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools16/30

Adoption & activity4/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 2d ago via OSV.dev · lacuna-toolkit (npm)

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