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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint true and destructiveHint false, so the safety profile is fully covered elsewhere. The description adds the one genuinely new behavioral fact: the call assumes an authenticated client. It says nothing about rate limits, failure modes, or latency expectations beyond what the annotations imply. With the annotations carrying the safety burden, a 3 is appropriate.

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?

A single, front-loaded sentence with no filler, repetition, or hedging. The precondition (authenticated client) is the one detail included, and it is exactly the detail that matters.

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 health-check tool with an output schema describing the return and annotations covering the safety profile, the description supplies the key scope qualifier (authenticated client). No return-format or pagination detail is needed given the output schema. It is complete for its complexity, though not elaborative.

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 takes zero parameters, so per the baseline this dimension starts at 4. There is genuinely nothing to document, and the description introduces no misleading parameter hints. It does not rise to a 5 only because there is no substantive meaning to add.

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?

States a concrete action and scope: a health check for an already-authenticated client. That is clearly distinguishable from the strict legal-research siblings. It does not explicitly name or contrast a sibling, but none is similar enough to be confused with it, so a 4 rather than a 5.

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?

There is no guidance on when to call this versus alternatives, nor any mention of how often or at what point in a session to use it. The phrase 'client yang sudah terautentikasi' hints at a precondition but states no usage condition. A ping's usage is largely self-evident, which keeps this from being a 1.

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