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

Annotations already declare readOnlyHint, idempotentHint and non-destructive, so the safety profile is covered. The description adds real behavioral context by stating the tool returns exact state/county values to feed order_title_search, but says nothing about failure modes (e.g. what an uncovered county returns) or rate limits.

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, all useful, with the core action front-loaded and the exclusion note parenthetically contained. No filler or repetition of the tool name.

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?

There is no output schema, and the description correctly fills that gap by explaining what is returned and where it is used. For a two-parameter read-only check, an agent has everything needed to select and 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?

Schema coverage is 0%, so the description must compensate. It does partly, clarifying that the county input also accepts borough/city names such as Brooklyn, Tampa and Houston, which the bare 'county: string' schema does not convey. It still doesn't explain what form state should take (abbreviation vs full name) or how the returned values pair with the inputs.

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 (check) and resource (coverage for a title search order) and scopes it to a county/borough/city. It also names the downstream consumer, order_title_search, which separates it cleanly from siblings like list_coverage or check_address.

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 explicit when-to-use (before ordering a title search) and when-not (Environmental Records Report and flood/Superfund lookups work at any US address and need no coverage check), naming the alternatives that bypass it. Nothing is left to inference.

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