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

The annotations (readOnlyHint: true, destructiveHint: false, idempotentHint: true) already declare the safety profile. The description adds that it shows 'MCP platform and adapter versions', which is a specific scope. It doesn't describe return format or any caveats, but since it's a trivial read-only tool, the transparency is adequate.

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 key information. Every word is necessary, and there is no redundancy. It perfectly balances brevity and clarity.

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?

With no parameters and no output schema, the description is mostly sufficient. It does not mention what the output will look like (e.g., version numbers format), but for a versioning tool, that is often implied. It could be slightly more descriptive about the exact scope, but given the simplicity, it is adequately complete.

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, and schema description coverage is 100% (trivially). The description does not need to add parameter semantics because there are none. It correctly omits any param-related text, and the baseline for zero params is 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 the action (show) and the object (current MCP platform and adapter versions). This is unambiguous and directly aligned with the tool name 'show_version'. It leaves no room for confusion about what the tool does.

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 does not provide any guidance on when to use this tool or why it might be relevant. However, given the tool is a simple read-only version check, the lack of explicit usage guidance is not a critical flaw, but it still misses an opportunity to suggest contexts like debugging or compatibility checks.

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