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

The annotations already declare readOnlyHint=false, idempotentHint=true and destructiveHint=false, so safety and repeat-call behavior are covered. The description adds real context beyond them: this is an attestation of the person's own consent tied to the exact version shown, not a generic write.

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 a single front-loaded sentence with no filler, and the core action comes first. The parenthetical about account.agreement is slightly dense but earns its place by naming the version source.

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 simple two-parameter write with annotations and full schema coverage, the description covers what is recorded and why. It does not say what happens on success or what occurs if the supplied version is stale, which matters since there is no output schema to fall back on.

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 coverage is 100%, so both parameters are already documented, making 3 the baseline. The description goes further by pointing to account.agreement as the source of the required version, which tells the agent where to obtain a valid agreementVersion rather than guessing.

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 states a specific verb and resource: it 'records' that the person 'agreed to the PolicyVera client agreement,' and it clarifies the subject is the person's own yes. That is enough to distinguish it from accept_quote, though it never names a sibling to contrast with.

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?

Usage is implied rather than stated: call it after the agreement was shown and the person said yes, using the version from account.agreement. There is no explicit when-not guidance and no mention of siblings such as accept_quote or undo_accept that an agent might confuse it with.

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