reverse

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

With no annotations, the description carries the full behavioral burden. It states the core operation, but does not clarify whether a new string is returned or the input is mutated, nor how Unicode or special characters are handled. The behavior is basically clear but under-specified.

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 with no filler, front-loaded with the action verb and a clear object. This is appropriately sized for such a simple tool.

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 one-parameter tool with an output schema, the description covers the essential operation, but it lacks explicit usage guidance relative to siblings and does not fully define the parameter. It is minimally adequate rather than robust.

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 schema has 0% description coverage and the description only indirectly refers to 'un string' without naming the parameter `text`. With a single required parameter, the meaning is inferable, but the description does not explicitly compensate for the schema 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?

The description uses a specific verb ('Invierte') and a concrete resource ('los caracteres de un string'), so the purpose is unambiguous. It does not explicitly mention siblings, but the operation is clearly distinct from echo and add.

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 guidance is given about when to use this tool versus echo or add. There are no stated conditions, prerequisites, or exclusions; usage must be inferred entirely from the name and the described operation.

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