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

Annotations already declare readOnlyHint=false, idempotentHint=false and destructiveHint=false, so the agent knows this is a non-idempotent write with no destructive side effects. The description adds the rating vocabulary and the optional HS correction, but does not disclose what happens on repeated submissions or that the referenced run must exist. Modest added value over the annotations.

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 front-loaded sentences with the core action first. The bilingual Vietnamese restatement duplicates the English content verbatim, which is defensible for a Vietnamese-domain tool but is still redundant text rather than added 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?

For a four-parameter write tool with no output schema, the description covers the rating semantics but omits where maLuot comes from (the prior tool call's result) and what a submission produces. Annotations handle the safety profile, so the remaining gap is workflow context.

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%, so the description carries the full burden. It glosses danhGia (the four ratings) and maHsDung (optional correct HS code), but says nothing about the required maLuot or the ghiChu note field, leaving half the parameters unexplained. Below the baseline 3 warranted by high-coverage schemas.

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-and-resource pair ('records your rating of a previous result') and enumerates the four rating values plus the optional correct HS code, so the agent knows exactly what this tool does. It stops short of differentiating itself from siblings like tra_ma_hs or tra_thue, which is the only gap.

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?

'A previous result' implies this is a post-result feedback loop, so usage is inferable, but there is no explicit when-to-use statement, no mention of the required maLuot identifier, and no exclusions or alternatives named. Adequate but leaves the agent to infer the trigger.

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