openDAW MCP

mcp_opendaw_set_region_mute

Mute or unmute a specific region on a track using its index, to silence or restore audio without deleting the region.

Instructions

Mute or unmute a specific region without deleting it.

mute: true to mute, false to unmute.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "track_index": "<track_index>",
      "region_index": "<region_index>",
      "mute": "<mute>"
    },
    "name": "mcp_opendaw_set_region_mute"
  }
}

Input Schema

Name	Required	Description	Default
`mute`	Yes
`unit_index`	No
`track_index`	Yes
`region_index`	Yes

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.386.0Aug 4, 2026

TDQS

A3.6/5.0

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden. It adds the useful non-destructive note ('without deleting it') and explains the mute parameter. However, it doesn't disclose potential side effects (e.g., whether playback state is affected) or error conditions, leaving gaps for a mutation tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two short sentences, no filler. The description is front-loaded with the core action and immediately explains the key parameter. Every word earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple mute operation, the description is adequate but minimal. It lacks usage context, prerequisites, and return value details (though an output schema exists). Given the tool has 4 parameters and no annotations, a bit more context would round it out, but it is not severely incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It only explains the 'mute' parameter ('true to mute, false to unmute'). The three index parameters (track_index, region_index, unit_index) are left to the agent's inference from their names, with no indication of zero-based indexing or required context.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb (mute/unmute), resource (specific region), and explicitly contrasts with deletion ('without deleting it'), distinguishing it from sibling tools like set_track_mute and delete_region.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage by describing the action, but does not explicitly state when to use this tool vs alternatives. It does not mention that set_track_mute exists for tracks or that delete_region is for deletion, so guidance is only implicit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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