vmix_configuration

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

The annotations already declare readOnlyHint=true and destructiveHint=false, and the word 'List' matches that safety profile. The description adds useful scope by noting that triggers are 'MCP-managed' and that armed state is included, going slightly beyond the annotations.

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

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

A single sentence with the verb and objects front-loaded, containing no filler or redundant restatement of the tool name. Every element adds information: what is listed and what detail is included.

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

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

For a zero-parameter, read-only list tool with no output schema, the description is complete enough. It states exactly what is returned and highlights the armed-state field, and the sibling set covers the related mutation operations.

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

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

The tool takes zero parameters, so the parameter schema is empty and schema coverage is effectively complete. There is no additional parameter burden for the description to carry, earning the baseline for a parameterless tool.

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

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

The description starts with 'List' and names two concrete resources: 'saved transition presets' and 'MCP-managed triggers', plus the 'armed state' detail. This is far more specific than the tool name alone and sets it apart from write-oriented siblings like vmix_transition_preset_save and vmix_trigger_arm.

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

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

The use case is clear: call this when you need an overview of saved presets and MCP-managed triggers and their armed state. It does not explicitly name alternatives or state when not to use it, but for a zero-parameter read-only list that is a minor omission.

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