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

Annotations already establish this as a safe read-only, idempotent, non-destructive, closed-world operation. The description adds pricing ($0.15 USDC), which is useful context, but the attempted return-value note ('an object with 31 fields including agent_id, at.') is garbled and adds little beyond the existing output schema.

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 and front-loads the purpose, but the sentence structure is awkward and ends with a broken fragment. The content is not padded, but the malformed trailing clause reduces clarity.

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?

An output schema exists and annotations cover the safety profile, so the description need not explain return values. However, for a grading tool with three optional parameters, it does not clarify what commitments and observations must contain or what conditions make grading meaningful.

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 100%, so the baseline is 3 even without additional detail in the description. The description implies that commitments are graded but does not clarify how the commitments, observations, or agent_id parameters should be supplied.

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 first sentence gives a specific verb and resource: grade whether an agent kept the commitments it stated. It distinguishes this from assess_agent_deadlock, although the phrasing is slightly muddled and the trailing fragment about output fields is unclear.

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 explicitly names assess_agent_deadlock as the alternative and states the differentiator: use this for agent commitments, not agent deadlock. That is clear routing guidance, though it does not address other adjacent grading or verdict tools.

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