compare_trends

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is clear. The description adds no additional behavioral context, such as the definition of 'first/latest' or how summaries are computed. It does not explain what happens with the output or any limitations.

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?

The description is a single short sentence that front-loads the key action. It is concise, but at the expense of necessary detail. Every word earns its place, yet the overall value is limited by its brevity.

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 the tool has 8 parameters, only one required, and 0% schema description coverage, the description is severely incomplete. It fails to explain how to structure the request or interpret the output. The presence of an output schema does not compensate for the lack of parameter and usage guidance.

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 description coverage is 0%, and the description adds no information about any of the 8 parameters. The agent cannot infer what 'indicator_codes' expects, how to filter by countries, year range, or other parameters. This is a significant gap.

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 the verb 'compute' and the resource 'first/latest trend summaries for multiple GHED indicators'. It provides a specific and distinct purpose. However, it could be more precise about what 'first/latest' means and how it differs from sibling tools like 'indicator_trend'.

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?

No guidance is given on when to use this tool versus alternatives such as 'indicator_trend', 'compare_countries', or 'compare_country_group'. The description does not mention when-not to use it or provide any usage context.

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