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

No annotations are provided, so the description bears full responsibility for disclosing behavior. It only says 'Short catalog' and gives no indication of side effects, return format, read-only nature, or the fact that several inputs are described in the schema as discarded. The behavioral burden is almost entirely unmet.

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, so it is concise, but it is under-specified rather than economically informative. It does not front-load any actionable verb, usage context, or behavior that would help an agent select or invoke the tool.

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 seven unrelated-looking string parameters, no output schema, and no annotations, a single phrase about a catalog is far from complete. An agent cannot determine what to pass, what output to expect, or how this tool fits alongside siblings.

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 seven parameters have descriptions in the input schema, so schema_description_coverage is high and the baseline is 3. The description adds no parameter-level meaning and does not explain how parameters like ref, url, or json 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 names a resource ('common HTTP status codes') and suggests a catalog/reference function, but it lacks a specific verb and does not say whether the tool returns a list, looks up a code, or validates a ref. It partially distinguishes itself from siblings like fetch-status by topic, but not enough for an agent to know the actual operation.

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, compatibility, or validate-json. The description gives no context, no exclusions, and no mention of sibling tools, leaving the agent to guess the intended use case.

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