macro_euro_gdp_yoy

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so the safety profile is well covered. The description adds the data range, source URL, and return type (pandas.DataFrame), which are useful but do not disclose any side effects, auth requirements, or rate limits. This is consistent with annotations.

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 very brief, with one sentence of content plus a URL and docstring. The first sentence is redundant with the annotation title, but the additional source and return type make it efficient. It is appropriately sized for a simple tool.

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 zero-parameter read-only data retrieval tool, the description provides the key details: indicator (Eurozone quarterly GDP YoY), date range, source URL, and return type. No output schema exists, but the return type is specified, making it complete enough for an agent to understand what will be returned without needing to configure anything.

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?

There are zero parameters and the input schema is empty, so there is no parameter-specific documentation needed. The description adds no parameter details because none exist, matching the baseline for zero-parameter tools.

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 identifies the tool as a Eurozone quarterly GDP YoY report with a specific date range, which distinguishes it from other macro_* siblings. However, it lacks an explicit action verb (e.g., 'get' or 'retrieve'), relying on the ':return:' docstring to imply data retrieval.

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 on when to use this tool versus alternatives. The description only states the data range and source URL, with no mention of alternative tools, exclusions, or conditions under which this tool is preferred.

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