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

Annotations already declare readOnly, idempotent, openWorld and non-destructive behavior, so the safety profile is covered. The description adds genuinely new behavioral context: the hard 'no earlier than UTC now − 1 day' API limit and the fact that results are paged here via offset/limit.

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 tight sentences: scope and time bound first, use case second, pagination note last. No filler, and the most important constraint (24-hour window) 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 still conveys the essential constraints (time window, paging, endpoint) and the detail parameter in the schema covers return richness. It stops short of describing the response shape or ordering of results, which is a minor gap for a list tool.

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%, so the schema already documents limit, offset, since, detail and the status enum with defaults and ranges. The description only restates the paging mechanic and the 24-hour bound already given in the 'since' schema description, adding little beyond the structured fields.

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 (List) and resource (orders) plus the distinguishing scope: only orders whose delivery status changed within the last 24 hours. It even names the backing endpoint (GET /Order/Status/Date/{date-time}), so the agent can separate this from the broader trackpod_list_orders without opening either schema.

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 a concrete use case ('what was delivered / failed since this morning'), which makes the intended scenario clear. It does not, however, explicitly say when NOT to use it or point to trackpod_list_orders for the unfiltered case, so the routing guidance is implied rather than stated.

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