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

Beyond readOnlyHint, it discloses substantial downstream behavior: irreversibility, asynchronous settlement, unstETH NFT minting, rewards stopping while queued, possible below-1:1 settlement after extraordinary losses, and approval cleanup. However, it does not plainly state that this read-only preparation tool does not itself submit the transaction, leaving some ambiguity about when those state-changing consequences occur.

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?

Two dense sentences front-load the operation and then concentrate on material risks and required review. There is no filler, and each clause contributes operational or safety information.

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?

Together with the fully described input schema and existing output schema, the description supplies enough detail to prepare the request cautiously and understand its major financial consequences. It would be more complete with an explicit prepare-versus-submit statement and lifecycle guidance covering finalization and the separate claim tool.

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%, including amount bounds, base units, chain restriction, and the owner default, so the baseline is 3. The description reinforces multiple bounded requests and exact approval but adds no concrete parameter syntax, constraints, or relationships 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 specifies the verb, resource, and scope: preparing one or more bounded stETH withdrawal requests with exact queue approval and cleanup. The unstETH NFT and queue details identify the withdrawal-request stage, but the description does not explicitly differentiate this tool from prepare_lido_withdrawal_claim or the staking and wrapping siblings.

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?

It clearly frames the tool around initiating queued stETH withdrawals and establishes wallet simulation and clear user review as required preconditions. It does not explain when withdrawal is preferable to another Lido operation or direct the agent to prepare_lido_withdrawal_claim once a request becomes claimable.

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