GMA2 MCP

control_executor

Control a grandMA2 executor by specifying executor ID and action: on, off, go, kill, or toggle.

Instructions

Control an executor (on, off, go, kill, toggle).

Args:
    executor_id: Executor number
    action: Action to perform: "on", "off", "go", "kill", or "toggle"

Returns:
    str: Operation result message

Examples:
    - Turn on executor 1
    - Kill executor 3
    - Go on executor 2

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": {
      "executor_id": "<executor_id>",
      "action": "<action>"
    },
    "name": "control_executor"
  }
}

Input Schema

Name	Required	Description	Default
`executor_id`	Yes
`action`	Yes

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Jun 21, 2026

TDQS

A3.5/5.0

Behavior2/5

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

No annotations are provided, so the description bears full responsibility for behavioral disclosure. It mentions returning a result message but does not describe side effects (e.g., whether 'kill' stops playback), required permissions, or if the operation is reversible. This is insufficient for a control 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?

The description is concise and well-structured with sections for Args, Returns, and Examples. Every sentence adds value, and the main purpose is front-loaded in the first line.

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?

The description covers parameters and return type, but given the tool's potential impact (controlling executor state), it lacks context on error conditions, prerequisites, or typical use cases. It is moderately complete but leaves gaps.

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

Parameters4/5

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

With 0% schema description coverage, the description adds significant meaning: it explains executor_id as 'Executor number' and action with enumerated values ('on', 'off', 'go', 'kill', 'toggle') plus examples. This compensates well for the schema's lack of descriptions.

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?

Description clearly states the tool controls an executor with actions: on, off, go, kill, toggle. It lists these explicitly and provides examples, making the purpose unambiguous. It distinguishes from sibling tools that focus on setting properties (e.g., set_executor_fader) or other operations (e.g., release_executor).

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

Usage Guidelines2/5

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

The description lists available actions but does not provide guidance on when to use this tool versus alternatives like flash_executor, release_executor, or stomp_executor. It lacks explicit context about when this tool is appropriate or not.

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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