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

Annotations already declare destructive=true, idempotent=true, readOnly=false and openWorld=true, so the safety profile is covered. The description adds genuinely new behavior: a hard refusal while an order is active and a consent precondition tied to the specific item. It doesn't say whether the listing's photos/offers are also discarded, which keeps it from a 5.

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 the action, then the refusal boundary, then the confirmation requirement. Every sentence carries distinct, necessary information; no filler.

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 destructive two-parameter mutation with no output schema, the definition covers the action, the refusal case, the alternative (support) and the confirmation protocol. Minor gaps remain: the ID's provenance and whether the removal is recoverable, though destructiveHint already signals irreversibility.

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 50%: 'confirmed' is thoroughly documented in the schema itself, while 'listing_id' carries only integer bounds. The description partially compensates by implying the ID must reference the seller's own listing (ownership constraint), but it doesn't say where to obtain that ID (e.g. seller_list_listings) or what happens on an invalid/non-owned ID.

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?

Sharp specific verb + resource scoped to ownership: 'Take one of the seller's own listings off the marketplace.' That scope plus the active-order refusal separates it from neighbors like seller_relist_listing or mark_sold_elsewhere, though no sibling is named explicitly, so it falls just short of full 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?

Gives an explicit when-not condition ('Refused while an order is active on it') and points to the alternative channel ('that needs the support team', i.e. support_create_ticket). It also states the precondition for proceeding ('Requires confirmed: true after the seller agrees to remove that specific item'). Nothing is left to inference.

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