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 tool's safety profile is well covered. The description adds no additional behavioral context beyond the bare statement of what it shows, such as whether versions are fetched live or cached, or whether authentication is required when invoked.

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, straightforward sentence that fully covers the tool's purpose without any filler or repetition. It is front-loaded with the verb and noun and wastes no words.

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 zero-parameter, read-only read-only version-inspection tool with accurate annotations, the description is complete. It clearly states what the output pertains to (MCP platform and adapter versions), and no output schema is needed for a simple version endpoint.

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 accepts zero parameters and the schema description coverage is 100%, which requires no further explanation. The description does not introduce parameter semantics because there are none; this is appropriate and earns the baseline of 4.

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 a specific verb ('Show') and a specific resource ('current MCP platform and adapter versions'). This differentiates it from sibling tools like authenticate, connect, and receipt lookup, which serve distinctly different purposes.

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 usage context is implied: the tool should be used when checking the current platform and adapter versions. However, it does not explicitly state when to use it versus alternatives like toolkit_info, which could also provide environment information.

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