get_reservas

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

No annotations are provided, so the description carries the burden. It does disclose the shape of the payload (weekly and annual variation of reserves), which is useful beyond the name, but it says nothing about update frequency, source (e.g., central bank), units, or currency of the series.

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 short, front-loaded statement that conveys the resource and its variations immediately. The bilingual duplication ('/ FX reserves') is mildly redundant but negligible in length.

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 parameterless data tool with no output schema or annotations, the description covers what the tool returns in broad terms but omits key operational details: data source, units, frequency of refresh, and historical depth. An agent can call it, but cannot fully anticipate the response.

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 to disambiguate; baseline 4 applies. The description correctly implies no inputs are needed.

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 names a specific data resource (international/FX reserves) and its content (weekly and annual variation), which clearly distinguishes it from sibling rate/inflation/FX-quote tools such as get_dolar_hoy or get_divisas_rango. It does not name an alternative tool, but the resource itself is unambiguous.

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 guidance on when to use this tool versus the other 16 financial-data siblings, nor any stated context about scope (national reserves? which country/period?). For a zero-argument data fetch the risk is low, but the agent gets no usage signals at all.

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