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

Annotations already declare readOnly, idempotent, non-destructive and open-world, so safety is covered. The description adds material behavior beyond that: results are paged with offset/limit and a hard cap of 1000 points per call, which is essential context for a read that may return large datasets.

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?

Three compact sentences, zero filler: identity and payload first, then the parameter rule, then the paging constraint. Nothing is repeated from the schema or annotations, and the most important scoping information is front-loaded.

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 output schema, the description usefully enumerates the returned point fields and units, and covers pagination, so an agent can call and consume it correctly. It omits ordering of points and total-count information, which would help an agent page reliably.

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%, so the baseline is 3. The description goes beyond the schema by stating the mutually-exclusive usage of route_code and route_id — a constraint the schema itself does not express (no oneOf/anyOf) — plus the units and paging cap in prose.

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 ("Get the driver's recorded GPS track of a route") and enumerates the payload fields (latitude, longitude, speed in m/s, time). It also names the underlying endpoint, making it clearly distinguishable from the sibling trackpod_get_route, which returns route metadata rather than GPS points.

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?

Gives an explicit selection rule for the two identifiers: "Pass exactly one of route_code or route_id," which removes ambiguity in invocation. It does not, however, say when to prefer this tool over siblings such as trackpod_get_route or trackpod_list_route_orders, so the guidance is clear but not exhaustive.

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