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

The annotations already establish a safe, idempotent, non-destructive read profile. The description adds meaningful context beyond that: delivery is protected and requires an authenticated subject with an existing purchase entitlement. It does not explain response shape, but the output schema covers that.

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?

The definition is short and front-loads the protected-interface framing before stating the entitlement constraint. The second sentence is somewhat convoluted, but there is little wasted text.

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?

The output schema and annotations reduce the burden, but the description still leaves core agent questions unanswered: what exactly is delivered, how approval is determined, and how this tool relates to license lookup or authenticity verification. For a delivery tool with an entitlement gate, that is a significant omission.

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?

The schema has one parameter, asset_id, with 0% description coverage, and the description never mentions it. There is no added meaning about the identifier format, expected value, or source, so the description 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 description calls itself a 'Protected delivery interface,' which gestures at delivering an approved asset but never states the action plainly or names the resource explicitly. It is not a tautology, but it also does not distinguish this tool from siblings like verify_asset_authenticity or lookup_license.

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 is provided. The entitlement condition reads as a precondition rather than a routing rule, and the description never mentions alternatives or when another sibling should be used instead.

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