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

No annotations are provided, so the description carries the full burden, and it discloses nothing: not whether this is a read or write, not what it returns, not permissions or side effects. A list of nouns cannot tell an agent what calling this will do.

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?

It is short, but short through under-specification rather than economy: a single sentence fragment with no front-loaded action. Brevity that leaves the tool's operation undisclosed does not earn credit.

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, no output schema and an empty input schema, the description is the only source of information about this tool, and it supplies none. An agent cannot tell whether it enumerates, aggregates, or simply describes capacity envelopes.

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 tool takes zero parameters, which is the baseline-4 case per the rubric; there is nothing to document. The description neither helps nor hurts here, and schema coverage is reported at 100%.

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 text is a bare noun phrase listing domain entities ('packs, listings, contracts, settlements and premium counters') with no verb, so it never states what the tool does with them. It arguably restates the resource the tool name already implies, and gives no way to distinguish it from siblings like capacity_list or capacity_pack.

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 when-to-use guidance, no exclusions, and no mention of any sibling alternative. An agent facing capacity_list, capacity_quote and capacity_envelope has nothing to route on.

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