alltrails_get_trail_weather

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

Annotations already declare readOnlyHint=true, so the description adds minimal behavioral context. It mentions 'weather overview' but does not clarify any caching, freshness, or error handling behavior. Annotations carry the safety burden.

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 sentence that front-loads the action and resource, with no extraneous words. It is optimally concise for a simple tool with one parameter.

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 the lack of output schema, the description is vague about what the 'weather overview' includes (e.g., temperature, conditions, forecast period). For a data-returning tool, more detail on the response structure would improve completeness. Adequate but has gaps.

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 coverage is 100%, and the parameter description 'Numeric AllTrails trail id' is already in the schema. The tool description repeats this without adding new semantic meaning beyond 'weather overview' context. Baseline of 3 is appropriate.

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 verb 'Get', the resource 'weather overview for an AllTrails trail', and the method 'by its numeric trail id'. It distinguishes this tool from siblings focusing on other aspects like trail details, GPX, photos, or reviews.

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 for fetching weather for a specific trail using its ID, but it does not provide explicit guidance on when to use this tool versus alternatives like alltrails_get_trail (which may include weather) or alltrails_get_trail_gpx. No when-not or alternative mentions.

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