test_getTime

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It clearly states a read-only retrieval of UTC time, but it does not disclose what is returned (e.g., ISO string, Unix epoch), how the format parameter changes the output, or whether there is a default format. This is a meaningful gap for an agent invoking the tool.

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 short sentence with no filler or redundant information. The core behavior is front-loaded and immediately understandable.

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?

The tool is simple and can be called with zero arguments, but there is no output schema and no annotation coverage. The description establishes that the tool returns the current UTC time but leaves the return representation and the role of the format parameter unexplained. This is adequate for a basic call yet incomplete for deliberate use of the parameter.

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 documents a single optional format parameter with enum values but no descriptions, and schema description coverage is 0%. The description does not mention the parameter at all, so it fails to compensate for the schema gaps. The enum names are somewhat self-explanatory, but no default or meaning of each format is provided.

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 uses a specific verb ('Get') and identifies the exact resource ('current UTC time'), which makes the tool's purpose unambiguous. It also adds the UTC qualifier that the bare name test_getTime lacks, and no sibling tool appears to offer the same functionality.

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 implies the tool should be used whenever current UTC time is needed, but it gives no explicit guidance about when not to use it or whether alternatives exist. There is also no mention of how the optional format parameter should influence selection of this tool.

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