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

Annotations already declare read-only, idempotent, open-world, and non-destructive behavior. The description adds the paid nature of the call ($0.01 USDC via x402) and the combined detect-and-translate behavior, which are useful beyond the schema/annotations. It does not detail output shape or failure modes, but the bar is lower given strong 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 short sentences with no filler; the core behavior is front-loaded and the cost is stated separately. Every word earns its place.

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 two-parameter, read-only translation tool with no output schema, the description covers the core operation and cost. Minor gap: it doesn't state whether the detected source language is returned alongside the translated text, which could matter for callers expecting both outputs.

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 100%, with examples and clear descriptions for both 'text' and 'to'. The description's phrasing 'input text' and 'any specified target language' merely echoes schema content and adds no new parameter-level meaning.

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 ('Detect', 'translate'), the input ('input text'), and the capability ('any specified target language'). It distinguishes from the sibling interzoid_translate_to_english by emphasizing 'any target language' rather than English-only.

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?

Does not say when to choose this over interzoid_identify_language or interzoid_translate_to_english, nor does it provide exclusions or conditions. The only usage signal is the phrase 'any specified target language,' which implicitly suggests general use, but no alternatives are named.

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