line_count

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 fails to mention what input is expected, whether the operation is read-only, what the output format is, or any side effects. The only extra detail is the cost, which is not a behavioral trait.

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 this is under-specification rather than conciseness. It omits essential information while including only a name, category, and cost. The two phrases do not form a coherent tool description.

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 tool's complexity (likely requires text input) and the absence of an output schema or annotations, the description is severely incomplete. An agent cannot determine how to invoke the tool, what parameters to pass, or what to expect in return.

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 contains only a generic 'params' object with no specific properties. The description adds no explanation of what parameters are required or how they should be structured (e.g., the text to count lines from). The schema coverage of 100% is misleading because the schema itself is a placeholder.

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 'line count — Other Utilities tool. Costs $0.001 USDC via x402.' It simply restates the tool name and provides a generic category and pricing, but never states what the tool actually does (e.g., count lines in a text input). This is essentially a tautology, offering no functional clarity.

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. It does not mention that it is for counting lines in text, nor does it compare with sibling tools like word_count or char_count. The description offers no trigger conditions or exclusions.

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