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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the description adds no contradiction)Skip. The description adds no extra behavioral context beyond what annotations provide; it just restates the fact it returns version infoessen, which is standard. Since annotations cover safety and idempotency, a 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 sentence, front-loaded with the purpose. Every word earns its place; there's no fluff or repetition.

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?

Given the zero-parameter complexity)Skip, the tool is simple enough that a one-sentence description is fully complete. The annotations cover safety and idempotency, and no output schema is present but the return is obvious (version strings).

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 takes 0 parameters, so there is nothing to explain. Schema coverage is 100% (vacuously), and the description adds no parameter info needed. Baseline for 0 params is 4, and no additional details are required.

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 current MCP platform and adapter versions. It uses specific verbs and resources ('show', 'MCP platform and adapter versions') and is distinct from siblings like authenticate or connect.

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 when to use it — whenever version info is needed. It doesn't explicitly mention alternatives, but given the zero parameters and unique purpose, the context is clear. It could have mentioned it's for troubleshooting or checking compatibility, but not required.

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