qt-mcp

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states this is a mutation operation ('Set'), but doesn't describe what happens if the property doesn't exist, whether changes are persistent, what permissions are needed, or what the output contains. For a mutation tool with zero annotation coverage, this leaves significant behavioral questions unanswered.

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?

The description is extremely concise and well-structured. The first sentence states the purpose clearly, followed by a clean parameter list with brief explanations. Every sentence earns its place with no wasted words, making it easy to parse quickly.

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?

Given that there's an output schema (which handles return values), no annotations, and moderate complexity (3 parameters for property setting), the description provides the basic purpose and parameter mapping but lacks important context about behavioral implications, error conditions, and usage guidelines. It's minimally adequate but has clear gaps for a mutation tool.

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 schema description coverage is 0%, so the description must compensate. It provides brief explanations for all three parameters, mapping each to its purpose. However, these explanations are minimal and don't provide format details, constraints, or examples. The description adds basic meaning but doesn't fully compensate 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.

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

The description clearly states the verb 'Set' and the resource 'Qt property on a widget', making the purpose immediately understandable. However, it doesn't differentiate this tool from potential alternatives like 'qt_trigger_action' or 'qt_invoke_slot' that might also modify widget state, so it doesn't reach the highest score.

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 description provides no guidance on when to use this tool versus alternatives. It mentions that 'ref' comes from 'qt_snapshot', which hints at a prerequisite but doesn't explicitly state when this tool is appropriate versus other mutation tools like 'qt_click' or 'qt_trigger_action'. No explicit when/when-not instructions are provided.

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