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

With no annotations, the description carries the full behavioral burden, and it does disclose genuine traits: no raw secrets are emitted, fragmented-secret false negatives are possible, and WTP is unmeasured. However, the disclosures are cryptic and omit return shape or read-only/rate-limit behavior, so it only partially fulfills the burden.

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, but the single fragment is not front-loaded with the tool's identity and reads as an unexplained jargon list rather than a structured statement. Brevity here comes at the cost of a clear lead sentence.

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 zero-parameter tool with no annotations and no output schema, the description should at least establish what the tool returns and what the listed limits apply to. Instead it offers opaque limit names that an agent cannot operationalize into a decision to call it.

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?

The tool takes no parameters, so there are no argument semantics to document; this is the baseline 4 case. Schema description coverage is nominally 100% on an empty object, leaving nothing for the description to compensate for.

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 never states a verb or what the tool actually returns; it is a terse list of caveats that largely restates the name ('limits'). Among siblings like census_verify and census_pricing, it gives no verb+resource framing to distinguish itself, and terms such as 'coverage-set headline' are undefined.

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, no prerequisites, and no reference to the sibling tools it competes with. The fragments hint at what the tool does not measure, but an agent gets no signal for when to call it instead of census_run or census_verify.

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