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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and openWorldHint=false, so the safety profile is fully covered structurally. The description adds only the incidental phrase 'client and server side', which hints at response categorization but discloses nothing about behavior beyond the annotations.

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?

A single short sentence is appropriately sized and front-loaded, but the awkward 'reference client and server side from freedailypro' wastes the one sentence it has on vendor attribution instead of useful content.

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 trivial one-parameter reference lookup whose annotations cover the safety profile, the description is close to sufficient, but it omits the only thing that matters here: that the input is a numeric status code (100–599) and roughly what comes back.

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?

There is one parameter, 'code', with 0% schema description coverage; the schema only supplies the 100–599 range without prose. The description never mentions the parameter at all, so it does not compensate for the documentation gap.

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 name and description identify a lookup of HTTP status codes, so the resource and action are inferable, but the phrasing 'Http status reference client and server side from freedailypro' is garbled and never states clearly what the tool returns or that it takes a status code. It is vague rather than specific.

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, what an agent should supply, or how it relates to any sibling. With ~180 sibling tools none of which overlap, routing risk is low, but the description still offers zero usage context.

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