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 clear. The description adds that the tool reports both platform and adapter versions, but it does not describe return format or any edge-case behavior. It doesn't contradict the annotations, and is sufficient but not especially revealing.

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 entire description is a single, front-loaded sentence: 'Show the current MCP platform and adapter versions.' It avoids any wasted words and conveys the core semantics immediately.

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 parameter-less, read-only version inquiry tool, the description is sufficient. It states what is shown (MCP platform and adapter versions) and is accompanied by strong annotations that remove safety ambiguity. The lack of an output schema is acceptable because the tool is simple.

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 properties list is empty. With no parameters to explain, the description does not need to add parameter semantics; the baseline 4 applies for parameter-less tools.

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 identifies a clear resource: 'current MCP platform and adapter versions.' It is easily distinguished from sibling tools like authenticate or toolkit_info, which serve different functions.

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 the tool is for checking current version information but offers little explicit guidance on when to use it or which alternatives might be better. Since there are sibling tools like 'toolkit_info' and 'marketplace', a bit more context would help, but the use case is fairly self-evident.

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