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

The description contradicts the annotations: it claims 'no external research or outbound actions' and 'Uses buyer-supplied information only,' while openWorldHint=true signals that the tool may access open-world/external resources. It does usefully add cost and wallet-authorization details, but per the contradiction rule this dimension must score 1.

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 compact and front-loaded: core purpose first, then constraints, then commercial terms. The payment and no-outbound clauses could be grouped more tightly, but every sentence carries necessary information and there is no filler.

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?

For a paid tool with 5 parameters, a nested required object, no output schema, and no parameter explanations, the description leaves too much unstated. It explains the high-level workflow and cost, but the agent still lacks the information needed to construct a valid request or understand the response beyond 'a draft.'

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?

With 0% schema description coverage, the description carries the full burden of explaining parameters, but it never mentions `input`, `brief`, `source_text`, `audience`, or any technical fields like `result_signature` or `payment_signature`. An agent cannot reliably map the high-level intent to the required nested `input` object.

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 specific action ('Compare supplied options'), a method ('using stated criteria, tradeoffs, unknowns'), and a deliverable ('a reasoned recommendation ... draft for human review'). This clearly establishes what the tool does and separates it from generic comparison or summary tools.

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?

It gives clear context for use: analyze buyer-supplied information and produce a decision memo, while explicitly ruling out external research and outbound actions. It does not list sibling alternatives or explicit when-not-to-use cases, but the boundary is strong enough for an agent to route to this tool in closed-world decision analysis.

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