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

There are no annotations to carry the safety profile, and the description only says 'catalog' without disclosing behavior such as whether inputs are actually used or discarded, whether any network access occurs, or what the response shape is. The schema hints at discarding inputs, but the description itself provides 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 single phrase is brief, but brevity comes from under-specification rather than efficiency: it omits essential operational detail while restating the name. Useful information about the catalog's scope is negligible.

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 no annotations and no output schema, the description would need to explain the catalog's purpose, input-output relationship, and side effects. Instead it gives one vague clause while the tool accepts nine heterogeneous parameters with unusual 'discarded after' semantics, which an agent cannot safely interpret.

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 nine parameters have descriptions in the input schema, including discard semantics, so schema coverage is effectively 100%. The tool description adds nothing beyond that, but the schema carries the explanatory burden, so a baseline of 3 is appropriate.

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 essentially a noun phrase restating the tool name ('status-catalog' → 'catalog of common HTTP status codes') with no verb or operation specified. It tells the agent it concerns HTTP status codes but not what action it performs or what it returns, and it does not distinguish it from sibling tools 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?

No guidance is given about when to use status-catalog rather than fetch-status, web-fetch, or other siblings. The description provides no conditions, exclusions, or alternatives, leaving the agent to guess from the name alone.

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