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

With no annotations, the description carries the full behavioral disclosure burden Stan and does so richly: auto-direction detection, preservation of formatting/names/numbers, refusal of mainland-CN data subjects, and a trust envelope with content hash+scan+provenance. It even discloses cost at $0.05 USDC per call.

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 compact and front-loaded with the core purpose, followed by behavioral guarantees and constraints. Technical jargon like 'BO trust envelope' and 'x402' pack content efficiently but may require domain knowledge.

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 one-parameter tool with no output schema, the description covers purpose, direction auto-detection, formatting preservation, data-subject restrictions, deliverable provenance, and cost. The only minor gap is the lack of explicit output format, but translation output is strongly implied.

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 `task` parameter, yielding a baseline of 3. The description adds that the task involves documents/text, but it does not clarify whether `task` should contain raw content or a natural-language instruction. Adequate but not enhanced.

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 function: professional Simplified-Chinese<->English translation of documents and text. It is unambiguous, and with no translator siblings, it is clearly distinguishable from every other tool in the list.

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 the tool (whenever CN<->EN translation is needed) and explicitly signals a key exclusion: it refuses mainland-CN data subjects due to PIPL guarding. It does not name alternatives, but no translation alternatives exist among siblings, so the guidance is sufficient.

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