Create a bus and route tracks to it. Use for 'create drum bus', 'make vocal bus with compression',
AI agents use dsl_create_bus to create or update resources in REAPER MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your REAPER MCP Server environment.
This tool creates and modifies DAW configuration (bus creation and track routing) but these changes are reversible—buses can be deleted and routing can be reconfigured. It does not execute arbitrary code, delete data irreversibly, move financial assets, or perform external system operations.
From the tool's definition Tool name 'dsl_create_bus' and description 'Create a bus and route tracks to it' indicates creation and modification of audio routing configuration in REAPER.
Documented attack patterns abuse exactly the kind of access dsl_create_bus gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and REAPER MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for dsl_create_bus:
{
"version": "1",
"default": "deny",
"tools": {
"dsl_create_bus": {
"limits": [
{
"counter": "dsl_create_bus_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}dsl_create_bus stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Create a bus and route tracks to it. Use for 'create drum bus', 'make vocal bus with compression',. It is categorised as a Write tool in the REAPER MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the REAPER MCP Server MCP server in PolicyLayer and add a rule for dsl_create_bus: 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 MCP Server. Nothing to install.
dsl_create_bus is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the dsl_create_bus 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 dsl_create_bus. 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.
dsl_create_bus is provided by the REAPER MCP Server MCP server (shiehn/total-reaper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 45 REAPER MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
45 REAPER MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.