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

Strong added context: money as integer minor units, the preview-only effect, the returned confirmation link, and the merchant-only activation gate — none of which the annotations convey. However, "Calling this changes nothing" textually conflicts with readOnlyHint=false, since a tool that creates a preview/confirmation artifact is not a pure read. The rest of the disclosure is genuinely useful and consistent with destructiveHint=false and idempotentHint=false.

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?

Four short sentences with no filler, and the crucial no-op/confirmation fact is front-loaded right after the purpose. Minor weakness: the money-units sentence appears second with no clear antecedent, slightly interrupting the flow of the safety message.

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 one-parameter tool with no output schema, the description supplies what the call returns (a preview of pending changes plus a confirmation link) and who can finalize it, which is the information an agent most needs to avoid mistaking this for the commit step. Remaining gaps — validation errors, what the preview contains, behavior after merchant confirmation — are minor.

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 coverage is 100% and the single `import` parameter is documented in the schema as "name or id, as imports.list gives them," so the baseline applies. The money-in-cents note does not describe the parameter at all (which is only a name/id string) and sits oddly without a referent, so it adds no parameter-level clarity.

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?

Specific verb + resource ("Run a product import") immediately corrected by the second and third sentences, which reveal this is actually a preview/dry-run that hands off to a merchant confirmation page. That correction is essential and prevents a false impression, but the description never distinguishes this from siblings like imports_inspect, imports_create, or imports_update.

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?

Usage is only implied: the confirmation-link flow suggests this belongs after an import is created and before data is committed, but the description never states when to use this versus imports_inspect (also a preview-ish tool) or imports_update. No prerequisites or exclusions are given.

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