alltrails_get_trail_weather

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

The readOnlyHint annotation already covers side-effect safety, but the description adds little behavioral context beyond restating the purpose. It does not mention what the weather overview includes, units, freshness, or availability, so an agent gets minimal extra transparency.

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 filler. It states the verb, resource, and input requirement clearly, achieving maximum efficiency.

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 one-parameter, read-only tool, the description provides the required identifier and the general return topic. Without an output schema, slightly more detail about what a 'weather overview' contains would be useful, but all information needed to make the call is present.

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 input schema already documents trailId as 'Numeric AllTrails trail id' with 100% coverage. The description repeats 'numeric trail id' without adding new semantic details such as how to obtain the id, valid ranges, or formatting constraints. Baseline 3 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 names a specific verb (Get), a concrete resource (weather overview), and the key input (numeric trail id). It clearly distinguishes this tool from siblings like alltrails_get_trail_gpx or alltrails_get_trail_reviews by focusing on weather.

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 makes the usage context clear: call this tool when you need the weather overview for a trail identified by numeric id. It doesn't explicitly name alternatives or exclusions, but the purpose is unambiguous enough for correct routing.

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