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

With no annotations, the description must carry behavioral disclosure itself. It does state that inputs are discarded after checks and that path involves no disk access, but it does not disclose whether the tool makes external network calls, whether 'pay-per-call' implies real cost, or what side effects may occur.

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 brief and free of fluff, and each parameter description is a single line. The compactness is a strength, though it contributes to the ambiguity around the tool's actual role.

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?

There is no output schema, no annotations, and no description of success/error behavior or the format of 'connection methods'. An agent would be uncertain what to do with the return value or how to handle malformed inputs, making the tool incomplete for reliable use.

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 have individual descriptions and 100% schema coverage, and each clarifies that the value is discarded after a check. However, the descriptions do not connect the parameters to the tool's core purpose of finding a gateway; for example, why a timezone, GitHub ref, or city is relevant remains unexplained.

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 uses an action verb ('Find') and names a deliverable ('public pay-per-call tool gateway', 'Returns connection methods'), but it never defines what a gateway is or how the 9 optional parameters relate to the task. The phrase 'Task text discarded' further muddies the intended purpose.

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 example task types (weather, search, scrape, voice) but provides no guidance on when to prefer this tool over siblings like weather-hint, web-fetch, or iana-zones. There are no conditions, exclusions, or scenarios to help an agent choose correctly.

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