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

The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, which fully cover the tool's non-mutating behavior. The description adds no extra behavioral traits (e.g., return format, error handling) but doesn't contradict annotations. Credit is minimal beyond structured fields.

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, precisely stated, with no filler. It is front-loaded and every word adds value.

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 trivial zero-parameter, read-only tool with comprehensive annotations, the description is fully sufficient. It explains exactly what the tool reports, and no output schema is needed since the description implies it returns version strings. Sibling tools are distinct, so no additional context is required.

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?

There are zero parameters, so the baseline is 4. The description mentions 'current' versions and specifies 'MCP platform and adapter', providing semantic meaning about what is shown, which is useful even though no parameter documentation 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 'Show the current MCP platform and adapter versions' clearly states the verb (show) and the resource (versions of MCP platform and adapter). It distinguishes itself from sibling tools like authenticate, connect, and marketplace by focusing on version information, which is a distinct purpose.

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 context—use this tool to check version information. It doesn't explicitly state when not to use it or name alternatives, but with no parameters and a unique purpose among siblings, the context is clear and no exclusions are needed.

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