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

The description adds a concrete behavioral/cost detail missing from annotations: a $0.03 USDC per-call charge, which matters for an agent deciding to invoke. Annotations cover safety (readOnlyHint=false, openWorldHint=true, idempotentHint=true), so the bar is lower, but latency, quality, rate or size limits are absent.

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?

A single front-loaded clause with purpose and pricing; no wasted words. It is very short, but not padded, so it earns its brevity.

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 translation tool with no output schema, zero parameter documentation, and no annotations explaining cost or auth, the description leaves too much unspecified: parameter formats, input limits, and pricing mechanics for a paid USDC call.

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 neither parameter is documented anywhere. The description says 'to any language' but doesn't name the targetLanguage parameter, its format (ISO code? name?), or whether text length is constrained. It fails to compensate for the coverage gap.

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?

States a specific verb+resource ('Text translation') and scope ('any language'), clearly distinguishing it from siblings like summarize or extract. It does not name an alternative tool, but the purpose is unambiguous.

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?

No when-to-use guidance, no mention of when not to use it, and no named alternatives among the many sibling tools. The pricing note is a cost disclosure, not usage guidance.

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