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

With no annotations, the description carries the full burden of behavioral disclosure. It does disclose the price, the resource URL, and the payment challenge return behavior, which is useful. However, it does not explain what happens after settlement, whether authentication is required, or the format of the final proofread output.

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: it opens with the core purpose, then gives pricing, resource URL, and payment behavior. Every sentence earns its place and there is no redundant filler.

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 single-parameter tool, the description covers the purpose, cost, endpoint, and a key payment behavior. However, there is no output schema and no annotations, so the absence of details about the settled response format and the x402 payment flow leaves an agent with incomplete context for a successful 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 the description must compensate for the single 'text' parameter. It essentially restates the parameter name without adding format, length, language, or content constraints. The purpose sentence implies that 'text' is the content to proofread, but no meaningful detail beyond the schema is provided.

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 ('Proofread') and resource ('text') and elaborates the exact scope: grammar, spelling, punctuation, and clarity fixes with explanations. This is specific enough to distinguish it from siblings like rewrite, summarize, and translate, even though it does not name them explicitly.

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?

There is no explicit guidance about when to use this tool versus alternatives. The description implies usage from the verb 'Proofread', but it never states exclusions or points to siblings such as rewrite for style changes. An agent must infer the appropriate selection from the title and first sentence.

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