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 agent knows this is a safe, side-effect-free operation. The description adds no additional behavioral context, such as what exact values or format the version info will use, but it does not contradict annotations.

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?

One short sentence that immediately communicates the tool's purpose. Every word earns its place and the description is front-loaded with the main action, followed by the target objects.

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 zero-parameter, read-only version checker, this description is fully sufficient. The output is implied by the noun 'versions', and the strong annotations plus empty schema eliminate any need for additional caveats or preconditions.

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, which baseline gives a 4. The input schema is empty and the description makes clear there is nothing to configure, so no parameter clarifications are necessary.

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 a specific verb ('Show') and clearly identifies the resource ('current MCP platform and adapter versions'), making it obvious what the tool does. It is distinct from sibling tools like authenticate or connect, and reasonably differentiates from toolkit_info by focusing on version numbers.

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 gives no explicit guidance on when to use this tool versus alternatives. It implies one uses it whenever version information is needed, but it does not mention whether it should be used for environment diagnostics, compatibility checks, or how it relates to toolkit_info.

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