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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered. The description adds the concrete endpoint path (POST /v4/wallets/batch/empty-accounts) and a pagination/size expectation, but 'This tool does not create, modify, or delete data' merely restates destructiveHint=false and adds no new information.

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 first sentence duplicates the tool title verbatim, and the no-mutation sentence duplicates the annotations, so several sentences do not earn their place. The remaining content (endpoint, 10-wallet cap, SPL/Token-2022 scope) is useful but not front-loaded — the endpoint path precedes the actual purpose statement.

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 annotations covering safety traits, a 100%-covered schema, and an output schema, the description only needs to convey scope and batch semantics, which it does. The main residual gap is not routing the agent to the single-wallet or dust-account alternatives, but nothing essential for correct invocation is missing.

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% and the nested body fields (ownerAddresses 1-10, page, limit, sortByAsc/sortByDesc) are fully documented in the schema. The description only restates that the body lists wallets and that up to 10 wallets are supported, so it adds nothing beyond structured data — baseline 3 applies.

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 description names a specific verb (fetch) and resource (Token-2022 and SPL empty token accounts) with an explicit batch/multi-wallet scope and a 10-wallet cap. It distinguishes itself from the singular sibling only implicitly through 'batch'/'multiple wallets' — it never names get-wallet-empty-accounts or get-dust-accounts-batch.

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?

Usage is only implied: an agent can infer this is for multi-wallet empty-account reads, but there is no explicit guidance on when to choose it over get-wallet-empty-accounts (single wallet) or get-dust-accounts-batch (dust accounts), which are the obvious alternatives in the sibling list.

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