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

Annotations already establish read-only, idempotent, non-destructive, open-world behavior, so the bar is lower. The description still adds real behavioral value by disclosing that road data older than 30 minutes is marked, that a fetch timestamp accompanies the data, and that the content is informational only.

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?

Front-loaded with the verb and resource, followed by two short supporting sentences. The enumeration of returned fields is dense but readable; some of it duplicates what the output schema already exposes, which keeps it from a 5.

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?

An output schema exists, so field-level return values need not be spelled out, and annotations cover the safety profile. The description supplies the remaining essentials an agent needs: scope (covered objective/route), staleness marking, and the informational nature of the data.

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 100% for both params, including the note that the permit entry resolves at route level, so the schema carries the semantics. The description adds only indirect context ('a route's forecast page for a covered objective') and no format or constraint detail beyond the schema; 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?

States a specific verb and resource: it returns permit entry (status, fee, notes, official link) and road access/conditions for a route's approach passes. The scope is well defined, but it doesn't distinguish itself from sibling tools like get_route_conditions or get_objective_conditions, which plausibly return overlapping road/condition data.

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?

There is no explicit when-to-use, when-not, or alternative-tool guidance. 'Informational only' is a caveat about the nature of the output, not routing advice, and 'for a covered objective' only hints that some objectives lack data. An agent gets no help choosing between this and get_route_conditions.

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