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

The annotations already indicate that the tool is read-only, idempotent, and non-destructive. The description merely restates the action without adding extra behavioral details such as whether authentication is required or if the tool returns a formatted string. It does not contradict the annotations, but it also does not provide additional transparency beyond what is already declared.

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, concise sentence that directly states the tool's purpose. It contains no unnecessary fluff, repetitions, or vague language. Every word contributes to clarity, making it highly efficient.

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 version-check tool, the description is adequately complete: it explains what the tool does without requiring extensive context. However, it could slightly enhance completeness by mentioning the return format (e.g., 'returns version strings') or by noting that no parameters are needed, but these are minor omissions given the simplicity of the operation.

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 no parameters, and the description implicitly reflects that by not mentioning any. Since the schema is empty, there is nothing to elaborate on. The description aligns perfectly with the schema, and no additional parameter information is needed.

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: showing the current MCP platform and adapter versions. It uses a specific verb 'Show' and identifies the resource (versions), making its purpose unambiguous. It also distinguishes itself from sibling tools that perform authentication, connection, marketplace, bug reporting, or general toolkit info, as none of those specifically target 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 does not provide explicit guidance on when to use this tool versus alternatives. It lacks context such as 'Use this to check compatibility before calling other tools' or any mention of scenarios where version information is needed. Since sibling tools are functionally different, the description could have at least implied a use case, but it does not.

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