Send a MIDI note on/off message with specified duration
AI agents invoke send_midi_note to trigger actions in FL Studio MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool triggers an external operation (sending MIDI signals to FL Studio), causing real-time audio/music output. It doesn't simply read or write data in a database sense — it executes an action against an external system (FL Studio via MIDI protocol). Misuse could result in unintended audio output or disruption of a recording session, but blast radius is limited to the music production environment.
From the tool's definition Send a MIDI note on/off message with specified duration
Documented attack patterns abuse exactly the kind of access send_midi_note gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FL Studio MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for send_midi_note:
{
"version": "1",
"default": "deny",
"tools": {
"send_midi_note": {
"limits": [
{
"counter": "send_midi_note_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}send_midi_note stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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Send a MIDI note on/off message with specified duration. It is categorised as a Execute tool in the FL Studio MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the FL Studio MCP server in PolicyLayer and add a rule for send_midi_note: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches FL Studio MCP. Nothing to install.
send_midi_note is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the send_midi_note rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for send_midi_note. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
send_midi_note is provided by the FL Studio MCP server (veenastudio/flstudio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 FL Studio MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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5 FL Studio MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.