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

Annotations already declare readOnlyHint=true, so the safety profile is covered structurally; the description usefully reinforces this by asserting the server does not create transfers. It adds little else behaviorally — no mention of result caps, ordering, or how the cursor/next_cursor cycle behaves beyond what the schema text already says.

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?

Three short, front-loaded clauses with no filler; the purpose and the read-only disambiguation come first. The 'Increase API: GET /wire_transfers' fragment is slightly redundant given the title, but it is compact and earns its place as an implementation anchor.

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 zero-required-parameter list tool with full schema coverage, the description covers purpose, read-only scope, and the filter dimension. With no output schema an agent might still want to know the return shape or default page size, but that is a minor gap for a simple listing endpoint.

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%, so limit, cursor, and account_id are fully documented in the schema. The description's 'Filter by account' merely restates account_id's purpose without adding format or constraint detail, so the baseline 3 is appropriate.

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 and resource ('List wire transfers') and explicitly disambiguates from the mutating counterpart by noting the server does NOT create transfers. Naming the underlying endpoint (GET /wire_transfers) further pins the operation, so an agent can distinguish it from sibling read tools like increase_list_transactions or increase_get_transaction.

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?

'Filter by account' hints at how to narrow results, and the read-only/no-create note frames the safe use case. However, it never states when to prefer this over siblings such as increase_list_transactions or increase_get_transaction, nor does it warn about pagination-driven iteration, leaving usage largely implied.

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