estimate_trip_budget_tool

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

No annotations are provided, so the description carries the full burden. It states the tool 'estimates' costs but does not disclose any limitations, data sources, accuracy, or that it is a read-only calculation. There is no mention of output format or that estimates are not reservations.

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, front-loaded sentence with no redundant words. It directly states the tool's action and scope, making it highly scannable and efficient.

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?

With no annotations, a 4-parameter schema, and an output schema, the description is too sparse to fully guide invocation. It omits the meaning of budget_level, how to adapt the estimate for different group sizes, or what data the estimate is based upon. The output schema may provide return structure, but the description alone is insufficient for correct parameter selection.

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 0%, and the description provides no information about parameters. It does not explain what budget_level values are accepted, how days/travelers influence the estimate, or that destination is a required free-text string. The listed cost categories do not map to any schema properties.

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 uses the specific verb 'estimate' and identifies the resource as trip budget, listing the cost categories (lodging, food, transport, attractions, contingency). This clearly distinguishes it from sibling tools like route planning, packing lists, and food recommendations.

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?

Usage is implied by the tool name and description: this is for planning travel budgets, distinct from route or packing tools. However, there is no explicit statement about when to use it over alternatives, nor any mention of prerequisites or excluded cases.

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