NexusForge EU Finance

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

With no annotations provided, the description carries full burden but only states it 'returns a unified snapshot per country' without detailing format, data sources, time periods, rate limits, or error conditions. For a comparison tool with 2-10 countries, this leaves significant behavioral gaps.

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 zero waste: first states purpose and scope, second describes the return format. Every word earns its place, and the description is appropriately sized for this 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 comparison tool with no annotations and no output schema, the description is insufficient. It doesn't explain the return format details, data currency, handling of missing data, or how the 'unified snapshot' is structured, leaving the agent with significant uncertainty.

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 description coverage is 100%, so the schema fully documents both parameters. The description adds marginal value by mentioning the specific indicators (inflation, GDP growth, unemployment) that map to the enum values, but doesn't provide additional semantics beyond what's in the 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?

The description clearly states the tool's purpose with specific verbs ('compare') and resources ('key economic indicators across multiple EU countries'), and distinguishes it from siblings by focusing on multi-country comparison rather than single-indicator retrieval like get_eu_gdp or get_eu_inflation.

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?

The description implies usage context (comparing multiple EU countries) but doesn't explicitly state when to use this tool versus alternatives like the sibling tools. No guidance on prerequisites, exclusions, or specific scenarios is provided.

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