pace_calc

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

The only behavioral disclosure is the cost of $0.001 USDC via x402, which is a payment requirement. With no annotations to provide read-only/mutation hints, the description offers no information about the tool's operation, inputs, outputs, or side effects, making it almost entirely untransparent.

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 a single short sentence, but it is under-specified rather than concise. While it avoids waste, it omits essential information, making the brevity a liability rather than 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?

With no annotations, no output schema, and a generic input schema, the description must carry the full burden of explaining the tool, but it does not. There is no information about what the tool returns or how to invoke it correctly, making it completely inadequate for even a simple calculator.

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 defines only a generic 'params' object with a placeholder description, and the tool description adds no detail about expected parameters such as distance, time, or pace units. This leaves the agent completely in the dark about how to construct a valid request.

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 only restates the tool name and categorizes it as 'Other Utilities tool', with no verb or resource specification. It completely fails to indicate what 'pace calc' does, making it essentially a tautology with no functional meaning.

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?

No guidance is provided on when to use this tool versus the many sibling calculators or utilities. There is no mention of scenarios, alternatives, or exclusions, leaving the agent without any basis for choosing this tool.

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