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

Annotations already declare destructiveHint=true, readOnlyHint=false, idempotentHint=false and openWorldHint=true, so the safety profile is largely covered. The description usefully adds the consent gate and the fact that the unflagged call is a preview of the lender-facing consent text. However, it says nothing about irreversibility, whether the share can be revoked, or what the lender notification looks like — meaningful gaps for a destructive, non-idempotent operation.

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?

Three sentences, front-loaded with the tool's scope and then split cleanly by the personConfirmed branches. The parenthetical about the consent screen being word-for-word is informative rather than filler. The phrasing around 'the person's yes, PolicyVera shares' is slightly garbled but not enough to obscure meaning.

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 output schema, the description does the right work by explaining what the unflagged branch returns (the consent screen text) and what the flagged branch does (shares plus notifies the lender). For a destructive, consent-gated write it is nearly complete; only reversal behavior and confirmation details are absent.

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 all three parameters are already documented in the schema, including 'true only on the second call' for personConfirmed. The description reinforces the two-branch meaning of personConfirmed but adds no constraint or format detail beyond the schema. Baseline 3 is appropriate when the schema carries the parameter burden.

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: sharing one home's insurance progress with a lender, scoped to a single request. The 'sharing door on PolicyVera' framing is metaphorical, but the operative sentences make the two operating modes concrete. It never names a sibling such as answer_lender_ask or tell_lender_new_home, so differentiation is inferential rather than explicit.

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 call sequencing: call without personConfirmed to see the consent screen, then call again with personConfirmed: true only after the person's explicit yes. That is a strong when-to-use pattern. It does not cover when a caller should route to a sibling tool instead, or what to do if the person declines.

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