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

Annotations already declare readOnlyHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered. The description adds the return payload (status, carrier, tracking URL, shipment date, events) and the GET endpoint, but says nothing about auth, rate limits, or failure when an identifier is unknown.

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?

One front-loaded sentence naming the keys, the returned fields then the endpoint. Minimal waste, though the trailing 'GET /api/track' adds little for an agent that only sees the tool interface.

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 return fields, and it covers both lookup paths. Adequate for a simple two-parameter read tool, with only the missing sibling routing as a gap.

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, but the description adds real meaning: the lookup can be done by tracking number OR order number, which is not obvious from a schema where both parameters are optional with no required field.

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 (track) and resource (shipment) plus the two lookup keys, and lists the returned fields. It is clearly distinguishable from get_order or list_shipped_orders, though it never names a sibling to route against.

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?

No when-to-use guidance and no differentiation from the many order-related siblings (get_order, list_shipped_orders, search_orders). The use case is only implied by the phrase 'for a shipped order'.

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