x402_translate

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

No annotations are present, so the description carries the full behavioral burden. It usefully discloses the $0.01 USDC/call fee and asserts broad language coverage, but it does not describe the response format, how target languages are specified beyond the schema, or whether any rate limits or payment prerequisites apply.

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 single sentence that front-loads the core action and then adds the only substantive non-schema detail, the per-call price. There is no filler, repetition, or unnecessary qualification.

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 two-parameter tool with complete schema coverage, the description and schema together provide the essential details: the required text input, optional target language, default behavior, and cost. A brief mention of what the tool returns could improve completeness, but the operation is simple enough that this is not a major gap.

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 already describes both parameters fully: 'Text to translate' and 'Target language (default English)'. With 100% schema description coverage, the description adds no meaningful parameter-level information, so the baseline score 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 uses a direct verb ('Translate') with a clear resource ('text') and scope ('into any language'), making the tool's function unambiguous. It is also distinct from sibling tools such as x402_summarize, x402_ocr, and x402_chat, so an agent can tell when translation is the relevant operation.

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 implies the usage context: use this tool when text needs to be translated. However, it provides no explicit when-not-to-use guidance, no alternatives, and no mention of limitations such as supported language coverage or formatting constraints.

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