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

With no annotations, the description carries the behavioral disclosure burden, but it only describes the catalog's content. It does not state whether the call is read-only, whether supplied values are discarded, or what output the agent should expect; the input schema's 'discarded' notes are not part of the description.

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 a single brief sentence with no filler, but it is under-specified rather than elegantly concise. It front-loads the topic yet leaves out operational detail, so brevity comes at the cost of usefulness.

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?

Without an output schema or annotations, the description needs to explain return values and invocation context but does not. The 100% schema coverage documents inputs, yet those inputs appear unrelated to HTTP status codes, leaving an agent without enough information to confidently select or invoke the tool.

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%, so the schema already documents all nine parameters in detail. The description adds no parameter-level meaning, which is acceptable because the schema handles it; however, the description also fails to connect these heterogeneous parameters to the stated status-code catalog purpose.

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 identifies the resource as a catalog of common HTTP status codes, and the HTTP scope does narrow the tool name. However, it is a noun phrase rather than a verb+resource statement, so it never explicitly says whether the tool lists codes, looks up meanings, or validates against them.

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 call this tool versus siblings such as fetch-status or browser-url-ok. The description does not mention any conditions, prerequisites, or alternatives, so an agent must guess the intended use.

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