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

The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered. However, the description adds no additional behavioral context beyond the purpose, such as what the output format looks like or any potential limitations. It does not contradict the annotations, but it does not enrich the agent's understanding of tool behavior beyond what structured fields already provide.

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, front-loaded sentence with zero filler. It conveys the purpose clearly and efficiently. There is no unnecessary detail or repetition of the tool's name.

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, clear annotations), the description is sufficient to understand its purpose. It does not explicitly state the return value or format, but for a trivial version-checking tool, this is acceptable. The annotations cover safety aspects, and the description covers the tool's function, making it essentially complete for its scope.

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 an empty object (100% coverage). According to the rubric, 0 parameters yields a baseline of 4. The description does not need to clarify parameter meanings because there are none. It simply states the action, which is sufficient.

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 function: 'Show the current MCP platform and adapter versions.' It uses a specific verb (show) and describes the exact resource (versions). This distinguishes it from all sibling tools, which deal with authentication, connectivity, marketplace, and bug reporting, none of which overlap with version display.

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 when to use it (whenever version information is needed) but does not explicitly mention alternatives or exclusions. Since none of the sibling tools provide version information, the intended usage is clear. A slight deduction for not stating 'use this when you need to check environment compatibility' or similar explicit guidance.

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