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

With no annotations available, the description carries the full burden of disclosing behavioral traits, but it only describes a 'catalog' and says nothing about side effects, read-only behavior, return format, permissions, or error behavior. The odd schema notes about values being 'discarded' are not reflected in the tool description at all.

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 one short sentence with no filler, but it is under-specified rather than concise in a useful way. It front-loads the only idea it has, yet the rest of the tool definition leaves major gaps.

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?

The tool has seven parameters, no output schema, no annotations, and no usage guidance, but the description does not explain what the agent should pass, what it will receive, or how the parameters relate to the tool's operation. This is inadequate for reliable selection and invocation.

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?

The input schema provides descriptions for all seven parameters, so schema coverage is high and the baseline is 3. The tool description itself adds no parameter-specific meaning, and it does not explain how any of the parameters relate to an HTTP status code catalog.

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 HTTP status codes, which is more specific than the bare name 'status-catalog' and conveys a vague reference purpose. However, it lacks an action verb and does not state whether the tool lists, looks up, validates, or explains status codes, nor does it distinguish itself from siblings like fetch-status.

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 such as fetch-status or web-fetch. No conditions, exclusions, or alternative tool names are mentioned, so an agent has to guess the intended use case from the noun phrase alone.

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