Play a procedurally generated melody using SuperCollider.
AI agents invoke play_melody to trigger actions in SuperCollider OSC 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 executes an external operation (audio playback via OSC in SuperCollider). It doesn't merely read or write data; it actively triggers sound generation in an external system. Misuse could cause unwanted audio output or disrupt audio sessions, but blast radius is limited to the local audio environment.
From the tool's definition 'Play a procedurally generated melody using SuperCollider' — triggers audio synthesis and external OSC operations in SuperCollider runtime
Documented attack patterns abuse exactly the kind of access play_melody gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SuperCollider OSC MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for play_melody:
{
"version": "1",
"default": "deny",
"tools": {
"play_melody": {
"limits": [
{
"counter": "play_melody_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}play_melody 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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Play a procedurally generated melody using SuperCollider. It is categorised as a Execute tool in the SuperCollider OSC MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the SuperCollider OSC MCP server in PolicyLayer and add a rule for play_melody: 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 SuperCollider OSC MCP. Nothing to install.
play_melody 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 play_melody 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 play_melody. 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.
play_melody is provided by the SuperCollider OSC MCP server (tok/supercollidermcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SuperCollider OSC MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
11 SuperCollider OSC MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.