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

With no annotations, the description carries the burden, but it only lists data categories rather than stating explicit behavior (e.g., 'returns data', output type, or whether it is a read-only query). It is not misleading and gives some sense of what to expect, but it leaves mechanics unspecified.

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?

A single, front-loaded sentence packs all relevant content; every word contributes and nothing is redundant or padded.

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 no-parameter tool, the description lists its main content areas, but it lacks usage guidance and does not differentiate from overlapping sibling tools (recession_risk_v1, wb_gdp). It is adequate but leaves some ambiguity for an agent deciding between this and alternatives.

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 input schema is empty and there are zero parameters, so there are no parameter semantics to document; per rubric, a baseline of 4 is warranted.

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 phrase 'US GDP growth' clearly identifies the resource and domain, and the list of quarterly/yearly, real GDP, consumer spending, and recession risk conveys scope. However, it lacks an explicit verb and does not distinguish itself from siblings like wb_gdp or recession_risk_v1, so it misses a 5.

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 provided about when to use this tool instead of sibling tools such as wb_gdp or recession_risk_v1. The description merely enumerates indicators without giving selection criteria or exclusions.

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