Close Geometry

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

Annotations already declare destructiveHint=true, so the destructive nature is known. The description adds the context that this closes the service 'launched via MCP', which is useful scope. However, it does not describe what happens to running processes, unsaved data, or whether the action is reversible beyond what annotations already indicate.

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 a single concise sentence that conveys the essential purpose without any wasted words. It is appropriately sized for a no-parameter, simple action tool.

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 the tool's simplicity (no parameters, no nested objects) and the presence of a destructive annotation, the description is adequate for an agent to understand the action. It lacks explicit detail about side effects or post-conditions, but these are not critical for a simple close operation.

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 input schema has zero parameters, so per rubric baseline is 4. The description adds no parameter-related information, but none is needed since the tool takes no inputs.

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 uses the specific verb 'Close' and identifies the resource as 'the MCP-launched Geometry service', clearly distinguishing it from sibling tools like geometry_launch and geometry_status. It is immediately clear what action this tool performs.

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 implies the tool is used to shut down the Geometry service, but it does not explicitly state when to use it versus alternatives (e.g., geometry_exit) or mention any prerequisites or consequences. Usage is inferred from the verb 'Close' rather than explicitly guided.

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