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

The readOnlyHint annotation is consistent with a prepare-style tool that builds rather than executes. The description adds the owner-validation prerequisite, which is useful pre-call context, but says nothing about what the preparation produces or what the caller must do with it, such as signing and submission.

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?

It is a single compact sentence with no filler, and the subject of the operation comes first. It may be slightly too compressed for a multi-parameter transaction-building tool, but it does not waste words.

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?

The return-value burden is lifted by the output schema, and parameter details are covered by the schema. For a four-parameter tool with a nested PoolKey, however, the description lacks the workflow context that the agent needs: it should explain what 'prepare' yields and whether the owner-validation state is a precondition.

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?

All four parameters have schema descriptions, so the schema does most of the work: sender address, EVM chain ID, token ID, and the PoolKey shape. The description does not explain any parameter, including the relationship between auction_key and token_id, so it adds nothing beyond the schema baseline.

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 plus resource: preparing collection of creator proceeds for an auction NFT. This separates it from the neighboring prepare_auction_create and prepare_auction_complete tools. The only weakness is that 'prepare' (build a transaction payload) is not spelled out without background knowledge of the family.

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?

A single conditional qualifier, 'with pending owner validation,' implies the auction must be in that state before calling, which gives some guidance. It still gives no explicit when-not and names no alternative among the many prepare_* siblings, so the agent has to infer the selection rules.

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