cost_of_living_overview

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

No annotations are present, so the description bears full burden for behavioral disclosure. It states what data is returned (headline ranges and budgets) but does not reveal whether data is static, cached, or real-time, nor does it mention any side effects or data sources. As a read-only tool, it should explicitly note that it is non-mutating.

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, efficient sentence (24 words) that front-loads the key purpose and details. Every word contributes to clarity—no filler or repetition.

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 simple informational tool with no parameters and an output schema, the description is largely complete. It covers the categories and budget formats. However, it omits explicit geographic scope and does not reference the output schema for further detail. Minor gap given the tool's low complexity.

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, so the description cannot add meaning beyond the empty schema. However, the description does add value by detailing the output structure (categories and budget types), which helps the agent understand what the tool delivers. Baseline for 0 params is 4.

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 it provides 'headline cost-of-living ranges' across specific categories (rent, utilities, etc.) and sample budgets for household types. This differentiates it from sibling tools that focus on single categories (e.g., rent_estimate, grocery_estimate), but lacks explicit mention of geographic scope (e.g., UAE), which is implied by context.

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 offers no guidance on when to use this tool versus alternatives. It does not indicate whether it's best for a high-level overview or for specific use cases. Sibling tools like 'rent_estimate' or 'grocery_estimate' exist, but no comparison or exclusion is provided.

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