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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the agent knows this is a safe, closed-world read. The description adds that results are a fixed catalog of services with descriptions and starting prices, which is useful, but it says nothing about freshness, auth, or rate limits. With annotations carrying the safety profile, a 3 is appropriate.

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 sentences, no filler: the first declares the content scope, the second declares the invocation triggers. Front-loaded and fully earned.

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?

With no output schema, the description usefully describes what comes back (services, their descriptions, starting prices, and supported industries) and when to call it. For a zero-parameter read-only catalog tool this is close to complete; only the result granularity (e.g. one entry per service vs. grouped) is unspecified.

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 tool takes zero parameters, so the baseline of 4 applies. The description correctly adds no parameter guidance, which is the right call for a parameterless catalog listing.

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 ('Lista') and resource (servicios de IA de Miss Yera) and even enumerates the service categories and the industries covered, plus the returned fields (descripción, precio desde). It does not explicitly name the sibling tools (agendar_diagnostico, fetch, search), so differentiation is implied by the narrow catalog scope rather than stated.

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?

Gives explicit when-to-use triggers: questions about what the business does, pricing, or whether a given industry is served. There is no when-not guidance and no alternative tool is named for overlapping needs (e.g. general lookups via search), so it stops short of a 5.

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