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

With no annotations available, the description carries the full burden of explaining behavior, but it says nothing about whether the tool sorts a list, mutates input, returns a new array, or what edge cases exist. It even fails to identify the input or output shape. This is a complete absence of behavioral disclosure.

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 short but not concisely informative; it is merely under-specified. Repeating the tool name takes up space without earning its place. A useful description could state what the algorithm sorts and what it returns in just one sentence, so brevity here is not a virtue.

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?

Given the absence of an output schema, annotations, and parameter documentation, the description is the only source of context, and it provides none. The agent is left unable to determine what input is expected, what result is returned, or how this differs from the many other sorting tools in the sibling list. This is completely inadequate.

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, so there are no parameter semantics for the description to clarify. The empty schema is complete and leaves nothing undocumented. While the description itself adds no value, the zero-parameter baseline applies because there is no parameter burden to compensate for.

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 literally 'Bubble Sort: Bubble Sort', which merely restates the tool name and provides no verb, resource, or scope. It does not tell the agent what the tool does with any input or output, and there is no differentiation from sibling sort tools like quick-sort or merge-sort. This is a pure tautology.

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 gives no indication of when to use bubble sort versus other sorting tools available in the sibling list, such as x402-quick-sort, x402-merge-sort, or x402-selection-sort. There is no mention of constraints, performance characteristics, or alternative conditions. An agent has no guidance for selecting this tool.

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