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

With no annotations provided, the description carries the full burden of disclosing behavior, and it discloses nothing beyond the algorithm's name. An agent has no idea whether this performs a computation, expects an array, mutates state, or returns a result.

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 not usefully concise; it is under-specified. The duplicated phrase 'Counting Sort' adds no information and fails to earn its place.

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?

A sorting algorithm tool with no description of input, output, behavior, or constraints is fundamentally incomplete. This is especially problematic given the large sibling list of similar sort tools; an agent cannot safely select or invoke this tool.

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 parameters for the description to explain. With no parameters, the baseline is 4; the schema already completely defines the call shape.

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 is a literal tautology: 'Counting Sort: Counting Sort' restates the tool name without adding a verb, action, resource, or scope. It mentions the counting sort algorithm, so it is not entirely missing, but it does not tell an agent what the tool actually does or how it differs from the many sibling sort tools.

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 use this tool versus alternatives like bubble-sort, merge-sort, quick-sort, or selection-sort. No context, prerequisites, or exclusion criteria are provided.

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