bde_series_destacades

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

No annotations are provided, so the description bears full burden. It explicitly states 'Retorna l'últim valor' (returns the last value), disclosing it provides only the most recent observation. However, no other behavioral characteristics (e.g., data freshness, rate limits) are mentioned.

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: first states the purpose, second lists the returned data. No unnecessary words, front-loaded with key information.

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?

Given zero parameters and an output schema (noted in context), the description sufficiently explains what the tool does and what data it returns. No additional details are needed for an agent to invoke it correctly.

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?

With zero parameters and 100% schema coverage (empty), the description adds value by enumerating the exact series returned (Euribor terms, ECB rate, CPI, public debt). This compensates for the lack of defined inputs, following the baseline of 4 for 0-parameter tools.

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 clearly states it shows the most highlighted financial series from the Bank of Spain, listing specific series (Euribor, ECB rate, CPI, public debt). This differentiates it from sibling tools like bde_serie which likely require a series ID.

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?

The description implies it is for quickly retrieving key market indicators but does not explicitly state when to use this vs. bde_serie or other financial tools. No alternatives or exclusions are mentioned.

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