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

The description mentions that task text is discarded and that it returns connection methods, but it does not clarify side effects, such as whether external calls are made or if costs are incurred. The 'pay-per-call' hint is vague and not elaborated. No annotations exist to supplement this.

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 concise, consisting of two sentences. However, the large and largely irrelevant schema is not structurally integrated with the description, and the tool's actual input mechanism is unclear. This balance of brevity and clarity is acceptable but not highly effective.

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?

The description lacks essential context: there is no output schema, no examples, no explanation of how the gateway is returned, and no error handling information. Given the tool's apparent purpose and the ambiguous parameters, the provided information is insufficient for an agent to confidently invoke it.

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?

All 9 parameters are optional and have descriptions that explicitly state they are discarded (e.g., 'discarded after the shape check'). This indicates the parameters do not functionally contribute to the tool's outcome, yet no alternative parameter (like a 'task' field) is provided to specify the requested task, making the input schema misleading and unhelpful.

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 clearly states the tool's purpose: to find a public pay-per-call gateway for tasks like weather, search, scrape, or voice. The verb 'find' and the examples make it specific, though it does not explicitly differentiate from sibling tools, so a perfect score is not given.

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 alternatives. There is no mention of conditions or contexts that would favor this tool over siblings, leaving the agent without any decision support.

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