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

Annotations already declare readOnly, idempotent, and non-destructive, covering safety. The description adds no extra behavioral detail beyond the plain fact of showing versions; there's no mention of output format, network calls, or potential errors. Since annotations cover the main concerns, a score of 3 is appropriate.

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, direct sentence that conveys exactly what is needed with no padding. It is front-loaded with the action. Perfectly concise.

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?

The tool is trivially simple (0 params, no output schema), so a brief description suffices. However, it could mention what the version info includes (e.g., whether it's a JSON object with details) or note that it's a quick read operation opportunistically. Still, with good annotations and no params, it's nearly complete, though adding a note about output would push it to 5.

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 0 parameters)Skip baseline 4, and the schema coverage is 100% (no props). The description doesn't need to add parameter meaning as none exist, so a score of 4 is fair, giving full credit for the simplicity.

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 purpose: showing the current MCP platform and adapter versions. It's concise and specific with a clear verb ('Show') and resource ('MCP platform and adapter versions'), and it distinguishes from siblings (e.g., toolkit_info) by focusing on version info.

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 as a quick informational query, but lacks explicit guidance on when to choose this over siblings like toolkit_info. Given the simple nature, this is adequate but could be improved with a hint about using it to verify compatibility or versions.

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