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 gives no sense of what the tool returns, whether it is a read-only lookup, how results are ordered, or any side effects. The phrase 'by published price comparison' hints at a data source but not behavior.

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?

Although the description is only one sentence, it is under-specified rather than concise. It does not front-load an action verb, and the sentence does not earn its place because it obscures more than it communicates.

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?

With no output schema, no annotations, and no clear action, the description is inadequate to guide invocation. An agent cannot tell what it receives back, how it behaves, or when to use it. This is well below a minimum-viable definition.

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 schema has 0 parameters, and the baseline for 0-parameter tools is 4. There is no parameter meaning for the description to add, so this is the only simplifying aspect of the definition.

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 noun phrase without a verb, so it never states what the tool actually does. It mentions 'criteria and any filters of the US field service and trades software', but does not clearly say whether it returns, explains, or compares them. The title 'What is compared' only weakly echoes the name, giving little differentiation from siblings like compare_options or compare_table.

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 the sibling tools. No prerequisites, no exclusions, no context about how 'published price comparison' relates to selection. An agent has no way to decide if it should call this instead of compare_table or enquiry_describe.

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