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

Annotations already declare readOnly/idempotent/non-destructive, and the description goes well beyond them: it discloses the required OAuth scope, the store-ownership precondition, the exact error cases ("Missing, disabled or unowned integration IDs return tool errors"), and the fact that marketplace-specific export rules still apply after confirmation. It also states what the response contains (targets, selected connection, displayed cards, website review URL), which the annotations cannot convey.

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?

Purpose and scope are front-loaded in the first two sentences, with prerequisites and error behavior following in a logical order. It is dense with semicolon-joined clauses and the sentence about publishing all displayed cards regardless of price direction reads slightly awkwardly, but no sentence is padding.

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 read-only preview with no output schema, the description covers return contents, auth requirements, precondition failures and the hand-off to confirmation, which is most of what an agent needs. The only real gap is pagination behavior for cursor, which the schema handles, so nothing critical is missing.

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%, so all six parameters are already documented and the baseline is 3. The description does add genuine meaning for integrationId (it must come from publishing.targets and the seller confirms the exact account) and clarifies that direction does not restrict what gets published, but cursor, strategy and automationMode get no extra explanation beyond the schema.

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 opening sentence names a specific verb and resource ("Preview publishing owned listings through a connected marketplace account") and explicitly fences off adjacent operations: "not a price update or recurring-pricing enrollment." It stops short of distinguishing itself from the closest siblings, supercatch_prepare_publication and supercatch_execute_publication, so an agent still has to infer how this review differs from those two.

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 to review an enabled integrationId from publishing.targets and the cards associated with that destination" gives a concrete trigger, and the description adds prerequisites (OAuth store:read consent, an approved owned store) plus the exclusion of price updates and recurring-pricing enrollment. It does not name an alternative tool to pick instead when the user actually wants to queue the export, only saying a separate website confirmation is required.

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