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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint false. The description adds the qualifier 'current' and specifies that it covers both platform and adapter versions, which is useful, but it does not disclose additional behavioral traits like return format or whether it performs any network calls. The annotations carry much of the transparency burden.

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 no filler. Every word ('current', 'MCP platform', 'adapter versions') contributes to the meaning.

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?

For a simple zero-input, read-only version-checking tool with strong annotations, the description is adequate. It does not explain the return format, but that is not essential for a tool whose sole purpose is to report versions. The description fully conveys the tool's 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, so schema-description coverage is 100%. Per rubric, zero parameters receive a baseline of 4. The description does not need to explain any parameters since there are none.

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 'show' and names the exact resource ('current MCP platform and adapter versions'). This clearly distinguishes it from sibling tools like 'authenticate' or 'marketplace', which serve entirely different purposes.

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 usage (when you need to know current versions) but does not explicitly state when to use this tool versus alternatives. It also does not mention any exclusions or point to sibling tools like 'toolkit_info' for broader system info.

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