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

Far exceeds the annotations: it discloses that the listing fee is not refunded, completed sales and buyer copies are preserved, new purchases stop, in-flight x402 payments may still settle, payment-claim windows, and the city-ownership edge case with its returned city_cancel_url. This is exactly the kind of destructive-operation detail the destructiveHint/idempotentHint flags 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?

The permanence/idempotence fact is front-loaded and every sentence is load-bearing, but the run is long and the payment-intent-window sentence is dense enough to risk being skimmed past. Efficient overall, slightly over-detailed at the tail.

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?

With no output schema, the description partially compensates by explaining the returned city_cancel_url and the tombstone text. It covers ownership, irreversibility, and the main failure cases. The only remaining gap is not addressing sibling routing (remove_listing) or any pagination/response shape.

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 schema already documents the single 'listing id' parameter, so baseline is 3. The description adds real meaning on top: the id must belong to a listing the caller owns, and no reason field exists, pre-empting an agent from inventing one.

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?

States a specific verb (withdraw) and resource (listing) and the concrete effect: the listing becomes the fixed tombstone 'withdrawn by merchant'. An agent can tell what happens to the listing. It does not, however, explicitly distinguish this from the sibling remove_listing, which is the one place a routing ambiguity remains.

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?

Clear context: 'Send only the id of a listing you own; there is no custom reason', plus explicit when-not conditions (maintainer-removed listings, sold city-ownership listings). It stops short of naming an alternative tool or saying when to prefer remove_listing over withdraw_item.

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