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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the description is not required to restate safety. The description adds 'current' implying real-time data, which is a minor behavioral addition. However, it does not disclose output format or potential latency, but for a read-only version tool this is acceptable. It does not contradict annotations.

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?

Single, front-loaded sentence. Every word carries meaning: 'Show', 'current', 'MCP platform and adapter versions'. No fluff, no redundancy.

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 version lookup, the description fully covers what an agent needs. No output schema exists, but the description does not need to explain return values for such a simple tool. The combination of name, description, and annotations provides a complete picture.

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 zero parameters, and schema description coverage is 100% (vacuously). Per rubric, baseline is 4 since there are no parameter semantics to clarify. The description appropriately avoids inventing parameters.

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?

Clear, specific verb ('Show') with specific resource ('current MCP platform and adapter versions'). Unambiguously distinguishes from siblings like 'connect' or 'authenticate', which serve different purposes. The sibling 'toolkit_info' might overlap, but the version-specific resource here is clear.

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 purpose is so specific that when to use it is self-evident. No explicit alternatives or exclusions are stated, but none are needed given the narrow scope. The title and description together make the use case obvious, which provides clear context, though it does not explicitly contrast with siblings.

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