Keyboardia MCP Server

Create, co-edit, analyze, publish, and export collaborative step-sequencer sessions through MCP. The keyboardia mcp server wraps that behind the Model Context Protocol, so an assistant can use it through 8 defined tools rather than through you.

What it actually does

A multiplayer step sequencer with polyrhythmic patterns, built for real-time collaboration.

• Real-time Multiplayer — - Up to 10 players can jam together on the same session
• Polyrhythmic Patterns — - Each track can have 3-128 step counts (26 options including triplet-friendly values)
• 70 Sound Generators — - 32 Web Audio synths, 11 Tone.js FM/AM synths, 27 sampled instruments
• 27 Sampled Instruments — - Grand piano, 808 kit, acoustic drums, Hammond organ, kalimba, steel drums, strings, guitars, sax, and more
• Effects Chain — - Reverb, delay, chorus, and distortion with limiter (full multiplayer sync)
• Parameter Locks — - Per-step pitch, volume, and tied notes automation

Its toolset

Everything the assistant can do here goes through one of these:

• Real — time Multiplayer** - Up to 10 players can jam together on the same session
• Per — track Swing** - Global and per-track swing settings for groove control
• Frontend — React 19, TypeScript, Vite
• Audio — Web Audio API, Tone.js
• Backend — Cloudflare Workers, Durable Objects, KV Storage
• Real-time — WebSockets with Hibernation API
• File — Description
• Testing — The Testing tool exposed by this server

Adding it to your client

Being a remote server, there is no local install. You register the endpoint with your client, authorise it once, and the tools appear.

When to reach for it

Among the cloud and infrastructure options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Keyboardia's toolset — Real, Per, Frontend and 5 more — is a fair guide to whether it matches your workflow. It is maintained by adewale; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Keyboardia's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Caveats

• Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the keyboardia mcp server does with a few real requests.