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

With no annotations, the description carries the full behavioral burden. It usefully discloses that nothing is charged again (no additional cost, effectively idempotent) and that either party can trigger it, but it is silent on permissions, whether redelivery can be repeated, what constitutes success/failure, and any rate limits.

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?

A single, front-loaded sentence with zero filler; the key safeguard (no re-charge) is placed immediately after the action, and nothing needs trimming.

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?

For a minimal one-parameter tool with no output schema and no annotations, the description covers the essentials (action, precondition, no cost, who may call). It still omits outcome/error behavior and repeat-invocation semantics, leaving it merely adequate.

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 no annotations exist, so the description must compensate for the single order_id parameter. It does not describe the id's format or where to obtain it, but the parameter is self-evidently named, so a mid-range score is appropriate.

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 (retry/redeliver) plus the resource and precondition (a paid order whose delivery failed), which is far more than a restatement of the name. It does not name or differentiate itself from likely overlapping siblings such as get_order or cancel_order, so it falls short of a 5.

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?

The condition 'whose delivery failed' implies when to use it, and '(buyer or seller)' clarifies who may invoke it. However, there is no explicit guidance on when NOT to use it, nor any alternative to consider (e.g., cancel_order or a refund path) when redelivery is not viable.

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