ping

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

No annotations are provided, so the description carries the full burden. It states that the tool returns a dictionary with status and basic server information, including version and server time, implying a read-only behavior. However, it does not mention authentication, rate limits, side effects, or error behavior. For a simple ping this is adequate but not exhaustive.

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 succinct and well-structured: a lead sentence, a bulleted list of benefits, and a return-type note. Every sentence contributes value, with no fluff or repetition.

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 tool this simple, the description covers the purpose, usage, and return value. It omits details like error responses or authentication, but given the trivial nature of a ping endpoint, the provided information is largely sufficient. The lack of differentiation from sibling health tools slightly reduces completeness.

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 the input schema is empty with full coverage. According to the guidelines, the baseline for zero parameters is 4. The description does not need to explain parameters that do not exist, and it adds no parameter-level detail because none is required.

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 identifies a ping endpoint for checking server availability and retrieving basic server info (version, server time). The verbs 'check' and 'get' are specific, and the resource is well-defined. However, it does not differentiate from sibling health-check tools like 'health_check' or 'health', so it loses the top score.

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 frames the tool as a 'lightweight way' to verify server responsiveness and check connectivity without complex API calls, which gives clear context for when it should be used. It does not explicitly name alternatives or state when not to use it, so it does not achieve a 5.

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