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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is well-covered. The description adds the 'current' aspect, implying it returns live data, but does not disclose additional behavioral nuances (e.g., output format). With annotations handling safety, this is adequate but not exceptional.

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, succinct sentence that immediately states the action and subject. Every word earns its place, and there is no fluff or unnecessary detail. It is optimally front-loaded and compact.

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 has no parameters, no output schema, and annotations fully cover its safety profile, the description is complete enough. It explains what it does (show versions) and no further context is required. There is nothing missing that would hinder an agent from using it correctly.

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 has zero parameters, and the schema is fully covered. Per the rubric, a baseline of 4 is appropriate for 0 parameters. The description adds no parameter-specific information because none is needed, making this a perfect score for the dimension.

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's action: showing current MCP platform and adapter versions. It specifies the exact resource (versions) and is distinct from sibling tools like authenticate or connect, leaving no ambiguity about its function.

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?

While there is no explicit statement of when to use it, the tool's name and description make it obvious for checking version information. There are no exclusions or alternatives, so the context is clear enough. A slightly higher score is justified because the purpose is so self-evident that explicit guidance is unnecessary.

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