plan_weather_aware_trip

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=true. The description adds that the service is live and paid, and that it provides specific weather awareness (rain, heat, wind, indoor backup). This adds some behavioral context beyond annotations but not extensively; no contradictions.

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 sentences, front-loaded with the core action and usage scenario. Every sentence is meaningful; no wasted words. The description is appropriately sized for the tool's complexity.

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?

Given 8 parameters, no required fields, no output schema, the description is too brief. It does not explain what the output provides, how to use parameters effectively, the meaning of 'x402', or that the service is paid (cost consideration). The tool's completeness is insufficient for reliable agent invocation.

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%, so the description must compensate. It hints at destination/coordinate pair and weather factors, but it fails to explain how parameters like date, time_window, plan_type, transportation_modes, or max_distance_or_travel_time map to inputs. The brief mention provides minimal guidance.

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 connects to a specific live paid weather-aware planning service for a destination or coordinate pair. It uses a specific verb ('connect') and resource ('x402 weather-aware planning service'), and it distinguishes from siblings like plan_day_trip or plan_weekend_getaway by focusing on weather awareness.

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 explicitly says to use the tool when the traveler wants rain, heat, wind, and indoor backup awareness before committing to outdoor time. This provides clear context for when to use it, though it does not mention when not to use it or provide direct alternatives among siblings.

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