transport_get_state

THE RISK

Low Risk

Why transport_get_state needs a policy

This tool queries the current state of REAPER's transport (play/record status, position, BPM, time signature, repeat mode). It performs a retrieval operation only, returning status information without modifying, deleting, or executing any actions. No side effects, no state changes, no financial impact. Classified as Read.

From the tool's definition Tool name contains 'get' and description states 'Get transport state' — retrieves read-only information about playback/record status, position, BPM, and time signature with no side effects.

Documented attack patterns abuse exactly the kind of access transport_get_state gives an agent:

POLICY

How to control transport_get_state

PolicyLayer is an MCP gateway — it sits between your AI agents and ReaperMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for transport_get_state:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "transport_get_state": {}
  }
}

transport_get_state is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register ReaperMCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about transport_get_state

What does the transport_get_state tool do? +

Get transport state (play/record status, position, BPM, time sig, repeat). It is categorised as a Read tool in the ReaperMCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on transport_get_state? +

Register the Reaper MCP server in PolicyLayer and add a rule for transport_get_state: 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 ReaperMCP. Nothing to install.

What risk level is transport_get_state? +

transport_get_state is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit transport_get_state? +

Yes. Add a rate_limit block to the transport_get_state 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.

How do I block transport_get_state completely? +

Set action: deny in the PolicyLayer policy for transport_get_state. 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.

What MCP server provides transport_get_state? +

transport_get_state is provided by the Reaper MCP server (xdarkzx/reaper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every ReaperMCP tool call.

Start from ReaperMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →