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

With no annotations present, the description carries the full disclosure burden, yet it is silent on crucial behavior: the schema reveals that most inputs are 'discarded after the shape check,' and the description never surfaces this throwaway-validation trait. An agent also cannot tell whether network access occurs for url, host, or feed 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?

At six words, the entry is under-specified rather than usefully concise. The single sentence covers only what the tool is, not how to invoke it or what happens to its inputs.

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?

For a 7-parameter tool with no annotations and no output schema, a one-line purpose statement is far from sufficient. The unusual discard-after-validation semantics and the relationship to fetch-status are entirely unaddressed.

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 7 parameters have descriptions in the schema, so the schema already documents the semantics and the discard behavior. The description adds nothing about parameters, which lands at the baseline of 3 given the high schema coverage.

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 names the resource ('catalog of common HTTP status codes'), so an agent can tell this is a reference lookup rather than a fetch operation. However, it states no verb or action and does not distinguish itself from siblings such as fetch-status, which is a natural competitor for status-related lookups.

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 alternatives, no exclusions, and no mention of sibling tools like fetch-status or web-fetch. The only clue an agent has is the tool name and the one-line purpose statement.

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