What is fl-studio-mcp CLAUDE.md?

Repository instructions for fl-studio-mcp, an MCP server that connects Claude to FL Studio’s piano roll through file-based communication. It documents installation, supported platforms, setup, and the usage workflow.

Use them to install and configure the MCP server, initialize FL Studio’s piano roll, and troubleshoot macOS or partial Windows support and accessibility permissions.

They explain how to establish the connection and what permissions and initialization steps are required for the integration to work.

How calvinw/fl-studio-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to calvinw/fl-studio-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/calvinw/fl-studio-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/calvinw/fl-studio-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 4,648 This file is loaded in full into every session.

When invoked 4,648 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.04648	$0.04648
Opus 5.5	$0.01859	$0.01859
Sonnet 5.5	$0.00930	$0.00930
Haiku 4.5	$0.00465	$0.00465

Measured 2mo ago against content hash 357d5748a891, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fl-studio-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 525 lines

How it starts

The opening of the file, as written. The whole thing — 525 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FL Studio Direct Integration - Documentation

Platform Support

⚠️ macOS Primary, Windows Secondary - This project primarily supports macOS with full auto-trigger functionality. Windows support is partially implemented but may require additional configuration.

Overview

This system allows Claude to interact with FL Studio's piano roll through direct file-based communication. It provides seamless integration between Claude's AI capabilities and FL Studio's music production environment with built-in timing delays to ensure reliable operation.

Installation and Setup

1. Install MCP Server for Claude

./install_mcp_for_claude.sh

This registers the MCP server with Claude Code. The server is named fl-studio-mcp.

2. Usage Workflow

For each session:

Open FL Studio and open a piano roll
Run ComposeWithLLM once (Tools → Scripting → ComposeWithLLM) to initialize
Start Claude - the trigger mechanism is built into the MCP server
No need to run separate scripts - everything is handled automatically!

Note: Claude Code needs Accessibility permissions (System Settings → Privacy & Security → Accessibility) to send keystrokes to FL Studio.

Getting Started (For AI Assistants)

If you're an LLM helping the user with this system, here's what you need to know:

1. Check Available Tools

First, verify you have access to these MCP tools (they'll have the mcp__fl_studio_mcp__ prefix):

mcp__fl_studio_mcp__get_piano_roll_state - Read the piano roll
mcp__fl_studio_mcp__send_notes - Add or replace notes (including chords)
mcp__fl_studio_mcp__delete_notes - Remove specific notes
mcp__fl_studio_mcp__clear_piano_roll - Clear all notes
mcp__fl_studio_mcp__clear_queue - Clear pending requests

If these aren't available, the MCP server needs to be started or reconnected. The server is registered as fl-studio-mcp in Claude Code.

2. Auto-Trigger System

Read the full file on GitHub · 525 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 525 lines · 4,648 tokens per session scan A 357d5748a891

Subscribe to this mod's changes

fl-studio-mcp CLAUDE.md is an instructions file published in the GitHub repository calvinw/fl-studio-mcp (49 stars, last pushed 10mo ago), licensed MIT. It adds 4,648 tokens to every session, about $0.0186 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Creative and media

fl-studio-mcp CLAUDE.md next to 6 instructions from other repositories
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fl-studio-mcp: Instructions file for Claude Code