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

With no annotations provided, the description carries the full burden. It clearly implies a read-only operation ('Returns') and specifies the exact information returned. It does not mention authentication or rate limits, but for a health endpoint this is not a significant gap. The behavior is sufficiently transparent for an agent.

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 sentence, direct and free of redundant words. It efficiently communicates the purpose without any fluff, earning the maximum score for conciseness.

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 output schema), the description lists all returned elements: health status, version, and rule engine statistics. This is complete and does not omit any critical information for an agent to invoke or interpret the result.

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?

There are zero parameters, so schema coverage is trivially 100%. The description does not need to add parameter information. The baseline for no parameters is 4, and no further detail is necessary.

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 a specific verb ('Returns') and an explicit resource ('server health status, version, and rule engine statistics'). This distinguishes it from sibling tools (analyze_android_project, explain_finding, etc.), which are focused on analysis and explanations rather than server status.

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 usage is implied by the nature of the tool—a health check—but there is no explicit guidance about when to use it versus alternatives or any exclusions. The sibling tools are clearly different, making confusion unlikely, but the description does not explicitly say 'Use this to verify server availability or version'.

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