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

No annotations are provided, so the description carries the full behavioral burden. It reveals only that the catalog is short; it does not mention that the tool is read-only, how the optional inputs are used or discarded, whether there are rate limits, or what kind of response to expect. The schema's 'discarded after' notes appear, but the description itself adds no behavioral transparency.

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 write-up is only four words and is under-specified, not concisely adequate. It front-loads the topic but omits essential information about inputs, behavior, and intended use. This is the kind of brevity that leaves the agent unable to invoke the tool effectively.

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 optional parameters, no annotations, no output schema, and a large sibling set, the one-sentence description is severely incomplete. An agent cannot determine whether to call it with no arguments, what to pass if so, or what the returned catalog will contain, making the tool practically opaque.

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 baseline is a 3. The description itself contributes nothing to parameter meaning and fails to explain why URL, city, JSON, path, and query relate to an HTTP status catalog, but the schema descriptions at least label each parameter, so the 3 baseline stands.

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 is basically a noun phrase restating the tool name: 'Short catalog of common HTTP status codes' adds only size and scope to 'status-catalog' without specifying an operation. It also fails to distinguish the tool from siblings such as fetch-status or browser-url-ok, both of which might overlap with HTTP status concerns.

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 about when to call this tool versus any of the siblings. No context, prerequisites, exclusions, or alternative conditions are given, so an agent would have to guess whether to use status-catalog, fetch-status, or normalize-url.

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