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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description's one added behavioral fact — 'Nothing is created until they order' — is genuinely useful and consistent with those hints, but it omits link expiration, price-locking, and whether the link is reusable.

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 short sentences, front-loaded with what the link is, then the flow, then the usage cue. Minor inefficiency: it describes the recipient's experience rather than framing it as a returned artifact, but nothing is padded.

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?

No output schema exists, and the description does signal the return type (a link URL) as well as the side-effect profile. It stops short of covering link lifetime or how the returned link relates to a later order lookup, which an agent would want given the create_order/get_order_status siblings.

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%, with clear per-parameter docs including the qty range, location format, review thresholds, and the cost tradeoff for higher min_reviews. The description adds no parameter meaning, so the baseline 3 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?

The description states a concrete deliverable (a leadproof.co link with the list preconfigured) and describes the end-to-end flow the link enables. It distinguishes itself implicitly from create_order by noting nothing is created until the person orders, but it never names a sibling explicitly. Clear purpose, weak sibling differentiation.

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?

'Use this when they prefer to finish in a browser' is a real usage cue, but it gives no explicit alternative (e.g. create_order for immediate/API purchase) and no when-not condition. With five sibling tools that also deal with leads and orders, the routing guidance is implied rather than specified.

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