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

No annotations are supplied, so the description carries the full behavioral burden. It discloses two useful facts — no AI is involved ("Sin IA") and each query costs $0.02 USD via x402 — but says nothing about side effects, idempotency, latency, failure modes, or what the response actually looks like beyond a list of source types. For a paid consultation tool with zero annotation coverage this is a substantial gap, though the cost/payment disclosure keeps it from the bottom of the scale.

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?

It is short and front-loads the domain, and the cost sentence is efficiently stated. However, "Lo mismo, más..." is a wasted and actively confusing opening clause that depends on context the agent does not have, and "Experto en Marcas: registro de marca en Colombia" partly restates itself.

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 9-parameter, no-output-schema, no-annotation tool, the description does sketch the return contents (cited articles with text, norms, SIC concepts, Andean Tribunal interpretations, with links) and discloses cost and payment protocol. It still omits output format, how the answer is structured, and any guidance on how the many optional inputs (fechas, contexto, pregunta) shape the result.

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%, so the schema already documents all nine parameters, including why solicitante changes the fee and how productos drives Niza class suggestions. The description adds no parameter-level meaning of its own, so the baseline of 3 applies.

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 opens with a role label ("Experto en Marcas") and a noun phrase ("registro de marca en Colombia") but never states a verb for what the tool actually does — answer a trademark question? register? assess? The second sentence says it returns cited articles, norms, SIC concepts and Andean Tribunal interpretations, which hints at a consultation/answer tool, but the dangling "Lo mismo, más..." refers to an unnamed sibling and leaves the boundary with registro_marca__ruta unresolved.

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?

"Lo mismo, más los artículos citados..." implies a relationship to another tool but never names it or states the condition for choosing one over the other. There is no when-to-use, when-not-to-use, or prerequisite guidance, so the agent must infer the routing decision from the parameter set alone.

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