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

The description discloses key behavioral traits: it touches no upstream service, is a placeholder, and will be removed. No annotations are provided, so this is valuable. However, it doesn't explain the behavior of the echo parameter or detail the response beyond version/attribution, though an output schema exists.

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 two sentences: the first gives the core purpose, the second adds placeholder context. It is front-loaded and every sentence earns its place with no fluff.

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 simple placeholder tool, the description covers purpose, safety, and lifecycle, but it omits any explanation of the echo parameter. Given the output schema likely covers return values, the description is mostly complete but not fully self-sufficient.

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 input schema defines an optional 'echo' parameter with a default but no description. The description does not mention this parameter at all, leaving its semantics entirely unspecified. With 0% schema coverage, this is a significant gap.

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 checks server liveness and reports version/attribution, and explicitly labels it a placeholder for verifying transport/wiring. This is a specific verb+resource with clear scope.

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?

It explicitly says it is a placeholder for verifying transport and tool wiring, and notes it will be removed, which guides when to use it. It also states it touches no upstream service, implying it's safe for testing. No sibling alternatives exist, but the context is clear.

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