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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does reveal that the tool involves writing (implies generation) and mentions payment ('pago x402 $0.07 USDC'), which is useful. However, it omits details about return format, side effects, or required permissions, so transparency is partial.

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, front-loaded sentence that covers the core purpose and payment condition efficiently. No filler words, and the structure is ideal for quick scanning.

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, the description still leaves a critical gap: what exactly to pass as 'input'. There is no output schema, and the description does not compensate by specifying return behavior or the expected input format, so an agent would have to guess when constructing a 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% and the description does not explain what the 'input' parameter should contain. While the examples of bio/descripcion/post give some context, they do not clarify whether the input is the source material, instructions, or the content to be written.

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 clearly states a specific verb and resource: 'Redactar copy corto' (write short copy) with concrete examples (bio, descripcion, post). This distinguishes it from siblings like resumen, traduccion, or correccion, which have different intended outputs.

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 provides no explicit guidance about when to use this tool versus its siblings. It only implies usage from the examples but lacks any when-not-to-use, prerequisites, or alternative tool references.

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