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

With no annotations provided, the description carries the full behavioral disclosure burden, but it reveals nothing: no method, no side effects, no return behavior, no prerequisites. The name alone suggests some array transformation, but the description does not explain what the tool actually does.

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 text is short but redundant, repeating 'Standardize Array' twice. This is under-specification rather than concise, purposeful writing; the sentence does not earn its place by adding information.

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 has no annotations, no output schema, and no behavioral description. While the parameter count is zero, an agent still has no way to know what result to expect or what 'standardizing an array' entails, so the description is not adequate for correct invocation.

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 has zero properties, so there are no parameter semantics for the description to clarify; per rubric a zero-parameter tool gets a baseline of 4. The only potential gap is that 'array' in the name hints at an input that the schema does not expose, but no parameter documentation is required when none exist.

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 'Standardize Array: Standardize Array' is a tautology that merely repeats the tool name. It does not state what standardization means (e.g., z-score, min-max, unit norm), nor does it distinguish this tool from siblings like normalize-array, standardize, or zscore-array. An agent cannot infer the operation or intended use.

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 about when to use this tool, what inputs are expected, or when to prefer sibling alternatives. The description contains no context or exclusion criteria.

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