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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds valuable behavioral detail: it returns status 'not-verified' with no guessing for countries not researched, and it explicitly states whether a missed requirement can be rectified on arrival. This goes beyond the annotations and helps the agent set expectations.

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 a bit long but each sentence earns its place: the first explains the core functionality with a list of factors, the second adds the not-verified behavior, and the third gives the no-argument usage. It is front-loaded with purpose and structured logically, though it could be tightened slightly without losing information.

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?

Given there is no output schema, the description adequately covers what the tool returns: the deciding factors, the rectification possibility, and the not-verified status for un-researched countries. It also handles the optional parameter usage. No critical information seems missing for an agent to call it correctly.

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 schema already provides a full description for the only parameter (country), including the omission behavior. The description reinforces this with 'Call with no country to list the researched markets', but adds no new semantic detail beyond the schema. With 100% schema coverage, the baseline of 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 clearly states the tool's purpose: to report what decides whether an import from China can happen in a destination country, listing specific factors (standards regulator, bank, trade licence, etc.). This is a specific verb+resource that distinguishes it from siblings like check_anti_dumping and find_duty_rate, which focus on duties and tariffs rather than the full import-governance picture.

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?

The description gives clear usage context: call with a destination country to get the import-governance factors, and call with no country to list researched markets. It also warns that un-researched countries return a not-verified status. While it doesn't explicitly contrast with sibling tools, the purpose statement makes it clear this is for regulatory/financial import barriers, not for duties or shipping.

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