AI agents invoke create_chord_progression 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.
Based on the server context, this tool likely generates and plays a chord progression through SuperCollider via OSC, which constitutes triggering an external audio operation. The description is empty, so confidence is reduced, but the pattern of sibling tools strongly implies Execute behavior. Severity is medium as misuse could cause unwanted audio output but has limited blast radius.
From the tool's definition Tool name 'create_chord_progression' on a server that 'controls SuperCollider audio synthesis via OSC'; sibling tools include play_melody, play_synth, create_sequence — all trigger external audio operations.
Documented attack patterns abuse exactly the kind of access create_chord_progression 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 create_chord_progression:
{
"version": "1",
"default": "deny",
"tools": {
"create_chord_progression": {
"limits": [
{
"counter": "create_chord_progression_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}create_chord_progression 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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create_chord_progression. 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 create_chord_progression: 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.
create_chord_progression 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 create_chord_progression 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 create_chord_progression. 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.
create_chord_progression 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.