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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is fully covered. The description adds genuinely useful behavior beyond the annotations by stating the null-return case for companies with no requests, but it does not say what status values are possible or whether 'status' is a scalar or an object.

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?

A single, front-loaded sentence with no filler, and the null-case caveat is folded in efficiently rather than added as a separate sentence. It is lean, though the terseness borders on under-specification for a tool with a nested parameter.

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 one-parameter read-only tool with a full annotation set and no output schema, the description covers purpose, scope (latest, per company), and the empty-result case. The remaining gap is the unexplained cardId-to-company linkage, which is minor given the tool's simplicity.

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% for a single nested UUID parameter named 'cardId' with no explanation of what a card is. The description partially compensates by framing the lookup as 'for a company,' implying cardId identifies the company, but it never says so directly, leaving the mapping between 'cardId' and 'company' implicit.

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 gives a specific verb and resource: it returns the status of the most recent contact request for a company, and explicitly covers the empty case with 'or null if there is none.' It clearly distinguishes this from getContactRequest by scoping it to the *latest* per company, though it never names that sibling explicitly.

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?

There is no explicit when-to-use guidance, no mention of when to prefer getContactRequest or listRequests, and no prerequisites or auth notes. The phrase 'most recent' implies a retrieval-latest use case, but the agent must infer the routing decision from sibling names alone.

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