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

With no annotations at all, the description carries the full disclosure burden and does substantially: the EIP-712 signing is free (no gas), and the setApprovalForAll tx to the Seaport conduit is one-time and conditional ('if missing') — a material side effect an agent must surface to a user. Remaining gaps are the return payload shape and failure/error behavior, so it is not 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?

Compact and front-loaded: the resource and price come first, the gas/approval caveats second, the continuation last. The telegraphic fragments ('Then submit_order.') are slightly cryptic and stack multiple clauses with colons and parentheses, but no sentence is wasted.

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 5-parameter, multi-transaction on-chain operation with no annotations and no output schema, the description is only partly complete: it says what it generates and what tx may be needed, but not what it returns, whether the punk must be owned/approved, or how seller and the two price fields interact.

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 only 40%, so the description must compensate. It anchors 'id' to a punk token id and 'price' to ETH, but it never explains the priceEth vs priceWei duplication (are they alternatives?), nor mentions 'seller' or 'expiresInSeconds' at all, leaving two documented-by-schema-only params and one undifferentiated pair.

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?

Names a specific protocol (Seaport 1.6), a specific asset (punk #id), and the artifact produced (an ETH-priced listing backed by EIP-712 typed data), which separates it cleanly from siblings like make_offer and accept. The verb is only implied by the noun phrase 'listing for punk #id' rather than stated outright, which keeps it just short of a 5.

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?

The closing 'Then submit_order' establishes the two-step workflow and tells the agent this tool is step one and what follows it, which is real routing guidance. It stops short of the top score because it never names the when-not cases — e.g., listing vs make_offer, or that the caller must be the punk owner.

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