Latest statistics

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

Annotations (readOnlyHint, openWorldHint) indicate safe read and potentially incomplete data. Description adds that figures are 'most recent' and explains behavior based on country parameter, which is useful beyond annotations. No contradiction.

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 concise sentences with no redundant information. Front-loaded with core purpose. Every word earns its place.

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 simple tool with 2 parameters, no required fields, and an output schema, the description covers the essential behavior. It could mention the role parameter explicitly, but the schema covers it. Adequate for the tool's complexity.

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 coverage is 100% with clear descriptions for both parameters. Description does not add new meaning beyond explaining tool behavior based on country presence. Baseline 3 is appropriate as description complements but does not significantly enhance 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?

Description clearly states the tool retrieves most recent displacement figures, distinguishing between global totals (no country) and country-specific hosted figures. The verb 'get' is implied, and the resource 'displacement figures' is specific. This differentiates from sibling tools like refugee_population or top_host_countries.

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?

Explicitly guides when to use with a country vs. without. While it does not mention alternatives or exclusions, the instruction is clear enough for an agent to decide appropriate context. The sibling list provides further options, but the description itself offers sufficient usage direction.

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