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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint, so the safe-read profile is covered. The description adds one genuinely useful behavioral note, that test deliveries are simulated, but says nothing about missing/failed lookups, visibility scope, or whether results refresh over time.

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?

Two short sentences, no filler and no repetition of the schema. The first clause is a verbless noun phrase, which slightly hurts front-loading, but the size is appropriate for a read tool.

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 field enumeration does useful work in describing the return value. However, an agent still lacks any parameter semantics for the one required argument and any fallback behavior, leaving the definition only barely sufficient for a two-parameter read 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 0% and the description never mentions either parameter. delivery_id is a required UUID and robomart_version is an enum-constrained string; the description offers no meaning, format, or guidance on the version parameter, so it fails to compensate for the schema gap.

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 name/title supply the verb (track) and the description pins down the resource precisely: the current Delivery, with an enumerated field list including store, order ref, ready_at, promised_by and pickup/return timestamps. It is not tautological and gives an agent a concrete sense of what comes back, though it never differentiates itself explicitly from siblings like get_proof or book_delivery.

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 when-to-use guidance, no note that the delivery_id must refer to an existing delivery, and no routing to alternatives such as get_proof or list_stores. The only clue, 'Test deliveries are simulated', is a data caveat rather than usage guidance.

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