macro_cons_gold

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint false, so the safety profile is covered. The description adds a source URL, exact date range, and pandas.DataFrame return type, which goes beyond annotations. However, it does not disclose columns, update cadence, or potential data 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 compact and front-loaded: main description, data interval, source URL, and return type are all in three short lines. There is no redundant filler or unnecessary elaboration.

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 parameterless report retrieval function, the description adequately covers what data is returned, the source, and the time range. Since there is no output schema, it leaves column details and units unspecified, but this is sufficient for an agent to select and invoke the tool.

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 tool has zero parameters and the input schema is empty, so schema coverage is effectively 100%. No parameter explanation is needed, and the baseline of 4 applies.

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 identifies the resource clearly as the SPDR Gold Trust holdings report with a specific date range (20041118-present) and includes a source URL. It distinguishes the tool from siblings by naming the world's largest gold ETF. However, it lacks an explicit verb like 'fetch' or 'query', relying instead on a noun phrase.

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 versus alternatives. There are no exclusions, prerequisites, or alternative tool mentions. The description only states data content and range, which gives no explicit usage context.

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