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

Annotations already declare readOnly, idempotent, closed-world and non-destructive, so safety is covered. The description adds useful return-content context (numbers plus coverage and method link) that partially substitutes for the missing output schema, but it says nothing about available report inventory, error behavior for bad slugs, or freshness of the published numbers.

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?

Two short sentences with no filler; the payload is front-loaded and the example slug follows. The phrasing 'The numbers of a published report' is slightly awkward but costs nothing in length.

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 single-parameter read tool with no output schema, the description should at minimum explain what a 'report' contains and how slugs map to reports. It gestures at both (numbers, coverage, method link, one example) but leaves the report catalog and default behavior unspecified.

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 0% for the single 'slug' parameter, so the description must carry the load. It provides one concrete example value ('utah-weekend-dealer-access') and glosses it as the Weekend Access Report, which is genuinely helpful, but it gives no general slug format, list of valid values, or indication that the parameter is optional and what the default is.

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 says it returns 'the numbers of a published report, with coverage and method link', which is a specific payload, but the naming ('report') and phrasing 'The numbers of a published report' are vague about what kind of numbers (dealer access metrics?) or which report. It never contrasts itself with siblings like dealer_score or compare_dealers, so an agent must infer that this is a static published-report payload rather than computed data.

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 when-to-use guidance and no alternatives named. The one clue is the parenthetical '(the Weekend Access Report)' tied to the example slug, implying a single currently published report, but nothing states when an agent should call this versus dealer_score or fee_law, nor what happens with an unknown slug.

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