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

The description directly contradicts the annotations. The 'openWorldHint' is true, but the description states 'no external research or outbound actions,' implying it does not interact with the outside world. This is a clear contradiction, so according to the rubric the score must be 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 two concise sentences with no filler. It front-loads the core extraction purpose and then clarifies constraints and output. The inclusion of price and payment authorization is necessary information for an agent to decide on invocation, and it is presented economically.

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 description covers the scope, input source, and output nature, and mentions payment requirements. However, it omits any reference to the specific parameters, and the contradiction with annotations undermines trust. While the schema provides parameter details, the contradictory behavior statement creates a serious gap in the overall context an agent needs.

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?

Schema description coverage is 0%, and the description provides no explanation of the parameters (input object with brief and source_text, result_expires, idempotency_key, signatures, etc.). The description only mentions 'supplied notes' and 'buyer-supplied information,' which is vague and does not help an agent understand how to fill the required fields. With zero coverage, the description fails to compensate.

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 clearly states the specific action of extracting only evidenced actions, owners, due dates, and unresolved assignments from supplied notes. It uses a specific verb and resource, and the focus on 'evidenced actions' distinguishes it from other extraction tools like entity_extraction or requirements_extraction, making its purpose unambiguous.

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?

The description implies when to use the tool (when you need action items from notes) but does not explicitly state when to use it versus alternatives or when not to use it. There is no mention of sibling tools or exclusions, so an agent must infer the appropriate context from the purpose alone.

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