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

Annotations declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds non-obvious behavioral details: the data source (trade.gov), the exact cost ($0.002 USDC per successful call), payment networks (Base, Solana, Arc), and that failed calls are free. This is valuable context beyond annotations, though it doesn't cover rate limits or authentication.

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?

The description is front-loaded with what the tool does, then scope clarification, then pricing. Every sentence carries actionable information (purpose, boundaries, cost). It could be slightly tighter, but the pricing detail is essential for an agent deciding whether to call.

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 simple, read-only list tool with a fully described single parameter and an output schema, the description provides everything needed: exact scope, returned fields, exclusions, data source, and call pricing. Nothing essential is missing; the output schema handles return values.

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 input schema has 100% description coverage for the single optional parameter q, including its filtering scope and empty-string behavior. The description adds no further parameter semantics, which is fine given the schema completeness; baseline 3 is appropriate.

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 states a specific verb ('Pending') and resource ('US Foreign-Trade Zone Board applications with open public comment periods'), lists returned fields (docket number, zone, applicant, activity, location, comment closing date), and explicitly excludes related but different data ('not the full zone directory or subzone privileges'). An agent can instantly tell what this tool returns.

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 clearly implies when to use ('snapshot of open dockets only') and when not to use ('not the full zone directory or subzone privileges'). However, it does not name any specific alternative tool among the many logistics siblings, leaving the agent to infer that no direct substitute exists.

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