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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is fully covered. The description adds the fact that it reports both platform and adapter versions, which is useful context beyond the annotations. No contradictions. However, it doesn't disclose whether it requires authentication or network access, but with readOnlyHint and no parameters, the behavioral expectations are minimal.

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, compact sentence that conveys the essential purpose without any fluff. It is front-loaded and every word earns its place. No redundancy with the tool 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?

For a trivial version-query tool with no parameters, no output schema, and strong annotations, the description is sufficient to set expectations. It tells the user what info they'll get (platform and adapter versions). It could mention return format, but given the simplicity, this is adequate.

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?

With 0 parameters, the schema coverage is 100% (no params to cover), so the baseline is 4. The description correctly indicates there are no parameters to configure, adding no extra semantics but not needing to. It's clear the tool requires no input, so parameter semantics are complete.

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 shows the current MCP platform and adapter versions, which is specific and unambiguous. It distinguishes itself from sibling tools by focusing on version information, though it could be more explicit about what 'MCP platform and adapter versions' entail.

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 this is a diagnostic/informational tool to check versions, which is a clear usage context. It doesn't explicitly state when not to use it, but given its simplicity and lack of alternatives among siblings, this is sufficient.

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