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

Annotations already cover the safety profile with readOnlyHint, idempotentHint, and destructiveHint false. The description adds one useful behavioral detail: each indicator is at its most recent available year, implying no time-series retrieval. It does not discuss missing data, units, or country-code normalization, so the added behavioral context is modest.

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?

One tightly written sentence, front-loaded with 'Snapshot', that packs in the indicator list and the temporal behavior. There is no filler, repetition, or irrelevant context.

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 single-parameter, read-only tool with no output schema, the description is largely sufficient: it names the subject, the indicators returned, and the temporal granularity. Minor gaps like units or missing-indicator behavior exist, but they do not seriously hinder correct use.

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 schema already fully documents the single country parameter as an ISO2/ISO3 code or name with a default of 'US', so schema description coverage is 100%. The tool description reinforces that the parameter is the profile subject but adds no meaning beyond the schema baseline.

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 a clear deliverable: a snapshot of a country's key development indicators, and lists exactly which indicators are included. The 'most recent available year' scoping helps separate it from time-series tools, though it does not explicitly name sibling Worldbank tools like worldbank_indicator or worldbank_compare.

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 snapshot wording implies the intended use case: a quick at-a-glance country profile. However, it gives no explicit guidance on when to prefer this tool over worldbank_indicator or worldbank_compare, nor does it state exclusions such as 'not for historical trends.'

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