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Remote Desktop Commander

by app.desktopcommander
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set_config_value

Destructive
                    Set a specific configuration value by key.
                    
                    Security note: configuration changes affect later file and command behavior.
                    Isolating them from untrusted file or command content reduces the chance that external content influences configuration.
                    
                    Config keys include:
                    - blockedCommands (array)
                    - defaultShell (string)
                    - allowedDirectories (array of paths)
                    - fileReadLineLimit (number, max lines for read_file)
                    - fileWriteLineLimit (number, max lines per write_file call)
                    - telemetryEnabled (boolean)
                    
                    IMPORTANT: Setting allowedDirectories to an empty array ([]) allows full access 
                    to the entire file system, regardless of the operating system.
                    
                    This command can be referenced as "DC: ..." or "use Desktop Commander to ..." in your instructions.

Input Schema

NameRequiredDescriptionDefault
keyYes
valueYes
deviceIdNoThe ID of the device to run this tool on (from list_devices). Required when more than one device is online; may be omitted when only one device is connected.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.9/5.0
Behavior4/5

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

Annotations already flag destructiveHint=true and readOnlyHint=false, so the mutation character is known. The description goes beyond that by disclosing a concrete blast radius: setting allowedDirectories to [] grants full filesystem access on any OS, and changes alter later file and command behavior. It does not say whether changes persist across sessions or apply per-device.

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?

Front-loads the core action in one line, then the security constraint, then the key reference list, then the critical empty-array warning. The trailing 'DC: ...' invocation boilerplate is the only non-earning content and it is a single line.

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

Completeness4/5

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

For a 3-parameter destructive mutation with no output schema, the description covers what keys exist, their value types, and the highest-risk misconfiguration. It omits what the return looks like, invalid-key behavior, and default values, which are minor gaps given annotations carry the safety profile.

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?

Schema coverage is only 33% (only deviceId is documented), so the description must compensate, and it does by enumerating the allowed key values and their expected value types (array, string, array of paths, number, boolean). That mapping makes the untyped `key` and polymorphic `value` parameters usable; the `deviceId` relationship to list_devices is left entirely to the schema.

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

Purpose4/5

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

States a specific verb and resource (set a configuration value by key) and enumerates the configurable keys, which makes the tool's scope concrete. It never names get_config as the read counterpart, so sibling differentiation is left to inference.

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 security note implies when this should be invoked (config changes should be isolated from untrusted file/command content), which is real usage guidance. However, it gives no explicit when-not guidance and does not point to get_config for reading current values before overwriting them.

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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