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 only says 'body discarded,' but says nothing about what the tool actually does with the other parameters, whether it makes network requests, what it returns, or any side effects. This is severely opaque for a tool with nine inputs.

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 only one sentence, but it is under-specified rather than concise. It omits critical information about what the tool does with the majority of its parameters. Conciseness should serve completeness; here it sacrifices it.

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 nine parameters, no output schema, and no annotations, the description needs to explain the tool's purpose, behavior, and input usage. It fails on all accounts. An agent cannot correctly call this tool based on the description alone.

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?

Schema description coverage is 100%, and each parameter has a short description (e.g., 'discarded after the shape check'). The tool description adds no extra meaning beyond what the schema already conveys, which is the baseline expectation. No additional value is provided.

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 verb ('HTTP status') and resource ('public library docs URL'), but the input schema exposes nine unrelated parameters (city, feed, zone, query, etc.) that are not mentioned at all. This makes the actual purpose ambiguous – it appears to be a generic 'hint' tool, not solely a URL status checker. It also fails to differentiate from siblings like fetch-status or browser-url-ok.

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 the many sibling tools. No mention of which input types it accepts, what scenarios it fits, or which alternatives might be better. An agent has no basis to choose it.

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