Adjust effect parameters. Use for 'make reverb wetter', 'increase compression ratio',
AI agents use dsl_adjust_effect 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 modifies effect parameters within the REAPER DAW. It changes existing settings (e.g., reverb wetness, compression ratio) which is a reversible modification — parameters can be changed back. This fits the Write category. Misuse could alter audio project settings undesirably, but it doesn't delete data or execute arbitrary code.
From the tool's definition 'Adjust effect parameters', 'make reverb wetter', 'increase compression ratio'
Documented attack patterns abuse exactly the kind of access dsl_adjust_effect 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_adjust_effect:
{
"version": "1",
"default": "deny",
"tools": {
"dsl_adjust_effect": {
"limits": [
{
"counter": "dsl_adjust_effect_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}dsl_adjust_effect 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.
Adjust effect parameters. Use for 'make reverb wetter', 'increase compression ratio',. 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_adjust_effect: 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_adjust_effect 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_adjust_effect 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_adjust_effect. 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_adjust_effect 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.