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

Annotations already cover safety (readOnlyHint, idempotentHint, destructiveHint=false, openWorldHint=false), so the bar is lower. The description adds real value beyond them: the data source is an aggregate federal program statistic, it is explicitly PII-free, and the coverage window is 1989-2026. It stops short of noting rate limits, result truncation behavior, or that name matching may be fuzzy.

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 dense sentences with zero filler: the what, the return shape, the follow-on purpose, and the data provenance. Everything an agent needs is front-loaded in the first clause.

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?

With no output schema, the description correctly carries the return-value burden by specifying the place_id format and what it unlocks. Data vintage and PII status round it out. Minor gap: it doesn't say what a result record otherwise contains or how matches are ranked, but that is not blocking.

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 100% (q is documented as county/state name with a >=2 char minimum, limit as 1-100 with default 25), so the baseline is 3. The description reinforces the name-matching intent but adds no syntax, matching, or pagination nuance beyond the schema.

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 (Search) and a precise resource (USDA RMA crop-insurance Summary of Business) scoped to county/state name. It also names the return artifact (place_id in {state_fips}-{county_fips} form), so an agent can distinguish it from the neighbor ag_census_county_search even without opening either schema.

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?

It implies the follow-on use (resolve a place_id to pull county underwriting history, 1989-2026), which is meaningful chaining context. However, it never states when to prefer this over the similarly named ag_census_county_search or other county-level searches, and gives no exclusions or prerequisites.

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