AI agents invoke record to trigger actions in Reaper. 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 initiates a real-time recording session in a DAW, which is an external operation with side effects that depend on system state and user configuration. While not destructive in the sense of permanent deletion, recording captures audio input and creates files, making it an Execute-category action.
From the tool's definition Tool name 'record' with description 'Start recording in REAPER' indicates triggering an external operation (audio recording) whose effects depend on runtime state and cannot be easily reversed without manual intervention.
Documented attack patterns abuse exactly the kind of access record gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Reaper, and nothing reaches the server without passing your rules. This is the rule we recommend for record:
{
"version": "1",
"default": "deny",
"tools": {
"record": {
"limits": [
{
"counter": "record_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}record 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.
Free to start. No card required.
Start recording in REAPER. It is categorised as a Execute tool in the Reaper MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Reaper MCP server in PolicyLayer and add a rule for record: 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 Reaper. Nothing to install.
record 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 record 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 record. 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.
record is provided by the Reaper MCP server (twelvetake-studios/reaper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Reaper, 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.
158 Reaper tools catalogued and risk-classified — across an index of 43,000+ MCP servers.