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

With no annotations present, the description carries the full burden. It does add a meaningful behavioral detail by stating 'Task text discarded' and noting that some inputs are discarded, which goes beyond a bare summary. However, it does not disclose possible side effects such as cost (despite the 'pay-per-call' label), authentication needs, or failure behavior, so it is only partially transparent.

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 three short, purposeful sentences: purpose, returned outputs, and the key side-effect. It is front-loaded with the most important action and contains no filler or redundant phrasing.

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?

Despite no output schema, the description does enumerate the return categories. However, with seven loosely related parameters and no explanation of how they select or shape the result, an agent cannot confidently determine what inputs to pass. The 'pay-per-call' aspect is also left ambiguous—whether the tool itself charges money or merely returns information about a paid gateway—which is a significant contextual gap.

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 parameters have schema descriptions, providing 100% coverage, so the baseline is 3. The tool description itself does not add semantic meaning beyond the schema; it does not explain how the ref, url, city, feed, host, or json inputs relate to the gateway lookup. Several schema descriptions are also terse or repetitive ('discarded after'), so the description does not compensate for that.

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 states a specific action ('Find') and a specific resource ('a public pay-per-call tool gateway (Monid)'), and enumerates the returned artifacts (CLI setup, how-it-works, skill file, remote MCP hops). It is clear, though it does not explicitly contrast itself with sibling tools like lib-docs-hint, so it stops short of full differentiation.

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 offers no when-to-use or when-not-to-use guidance, and no alternatives are mentioned. The only contextual hint is the resource name, which implies use when someone needs Monid gateway setup, but that is not explicit. There is also no guidance about which inputs to provide for which scenarios.

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