server_status

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

The description adds that the tool checks 'health and data freshness,' which provides some context beyond the readOnlyHint annotation. However, it does not specify what the return value is (e.g., status message, JSON object), leaving behavioral details incomplete.

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, clear sentence without any extraneous words. It is front-loaded and efficient.

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?

The tool has no parameters and no output schema, so the description should explain the return format. It only says 'check health and data freshness' without describing what the response looks like, which is a gap for a tool with no structured output documentation.

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 no parameters and 100% schema coverage, so the description naturally adds no param info. For a zero-parameter tool, the baseline is 4, and no compensation is needed.

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 tool checks 'server health and data freshness,' which is a specific verb+resource. It distinguishes from sibling tools that deal with product data, so an agent can easily differentiate.

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 for checking server status, but does not explicitly state when to use it versus alternatives. Given siblings are all pricing data tools, it's clear enough, but lacks explicit 'when-not' or prerequisite context.

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