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

No annotations are provided, so the description carries the full behavioral burden. It discloses useful behavior by stating what is returned (the exact state and county values to pass onward), but omits what happens when a county is not covered, whether that surfaces as a boolean, an empty result, or an error, and any auth or rate constraints.

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 tight sentences with zero filler, front-loaded with the core purpose before the return-value detail. Every clause earns its place.

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 two-param tool with no output schema and no annotations, the description covers the purpose, the input alias flexibility, and the return shape. It still leaves the failure/uncovered case and the accepted format of state unspecified, which an agent would need to invoke this confidently.

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% and both parameters are required, so the description must compensate. It usefully clarifies that county can be a borough or city name (Brooklyn, Tampa, Houston), which is real semantic value, but leaves the expected format of state (abbreviation vs full name) undocumented and does not reconcile the county input against the state input.

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?

States a specific verb and resource: it checks whether a given county can be searched. It also names the downstream consumer (order_title_search) and clarifies that borough/city inputs like Brooklyn or Tampa are accepted, which sharpens the scope. It stops short of explicitly contrasting itself with the sibling list_coverage, so a 4 rather than a 5.

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?

Gives clear context: call this before order_title_search to confirm a county is searchable, and it explains that the returned values are the ones to feed into that tool. There is no explicit when-not-to-use or a direct comparison to list_coverage, so it falls just short of a 5.

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