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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so safety is largely covered. The description still adds real context beyond them: it never performs payment or signing, it re-reads the publication at call time, and it fails when the publication has changed — a failure precondition not expressed in any annotation.

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 with no filler; the core action is stated first and the safety and failure constraints follow immediately. Every sentence carries information.

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?

An output schema exists, so return values need no explanation, and the annotations cover the safety profile. What an agent needs beyond that — the precondition, the never-pays guarantee, and the stale-publication failure — is present.

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% across three required parameters, so the description carries the full burden. It gestures at publicationDigest ("re-read the exact storefront publication", "fails if the publication changed") and possibly projectionId ("its selected service"), but slug and the digest/projection formats and relationship are never explained.

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 gives a specific verb+resource combination ("return an owner-browser checkout link") tied to a storefront publication, which is meaningfully distinct from a services or status tool. It does not explicitly contrast itself with voidpay_storefront or the other siblings, so sibling differentiation is left to inference.

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 and no mention of alternatives such as voidpay_storefront, even though that sibling is the obvious candidate for a related read. The description only states a precondition ("Fails if the publication changed"), which is a failure mode rather than usage routing.

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