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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuine behavioral context beyond that: it tells the agent the payload includes connected domains, the tool set available to it, and that a call limit exists (implying throttling). It stops short of describing response format or freshness of the status.

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?

A single dense sentence with the resource front-loaded ('Estado del Gateway de SC+') followed by the three things it returns. No filler, no repetition of the title.

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 no-argument, no-parameter status tool with rich safe-read annotations, the description is nearly sufficient: it tells the agent what information it will obtain. Minor gap is that it does not say whether the status reflects live connectivity or how it should be interpreted if domains show as disconnected.

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 there is nothing for the description to disambiguate; the baseline for a 0-parameter tool is 4. The enumerated return contents are a useful substitute for the missing output schema.

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 exactly what the tool reports: gateway status covering connected domains, tools available to this agent, and its call limit. That is a specific resource plus an enumeration of what the status contains, clearly distinguishing it from the banking/mortgage calculation siblings. It falls short of a 5 only because it never contrasts itself with those siblings 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 'use this when...' statement, but the listed contents (available tools, call limit) strongly imply the intended context: discovering capabilities and quota for this agent. Usage is inferable rather than stated, and no exclusions or alternatives are named.

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