Serie

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

Annotations already declare readOnlyHint=true and openWorldHint=true. The description adds useful behavioral context beyond annotations: both dates are inclusive, data is official BCRP data, and the result includes data, series metadata, and a reproducible source link. It does not cover error behavior or rate limits, but the main behavioral profile is clear.

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?

Three compact sentences, front-loaded with the core action and followed by essential date-format guidance and return contents. Every sentence adds useful information without repetition or filler.

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?

The tool is simple and has an output schema plus annotations, so the description need not explain return structure. Still, for a 3-required-parameter tool with 0% schema coverage, the missing explanation of the codigo parameter's format is a clear gap for correct invocation.

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 0%, so the description must carry parameter meaning. It does explain the date formats for desde and hasta depending on series frequency (YYYY-MM, YYYY-T1, YYYY-MM-DD, YYYY), which is valuable. However, it never specifies the format or expected form of the required codigo parameter, leaving a key parameter only partially documented.

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 and resource: downloads official BCRP series observations for one series over a date range. This inherently distinguishes it from sibling tools like buscar_series, resumen, and comparar_series, which search, summarize, or compare rather than download a single series.

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 usage by specifying a single series code and an inclusive date range, and gives date formats by frequency. However, it does not explicitly say when to use this tool instead of buscar_series or comparar_series, nor does it state prerequisites such as needing a valid series code.

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