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

Annotations already establish that this is a mutation (readOnlyHint=false) and not destructive. The description adds a useful compliance constraint by warning against sending SSN/tax IDs, birth dates, or card-processing details, but it does not disclose return behavior, side effects, or failure modes. Transparency is partial.

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 description is one front-loaded sentence with no filler, immediately naming the action and target system. Every word earns its place, though the brevity does rely on the schema for additional detail.

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 create mutation with no output schema, the description is thin: it does not state what a successful call returns, how errors surface, or prerequisites such as an existing deposit account. The rich schema and mutation annotations make the tool callable, but the description leaves important operational context unstated.

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 entity property already documents the required Deposit object shape, DepositToAccountRef, per-line DepositLineDetail.AccountRef, and sensitive-data restrictions. The tool description itself adds no parameter meaning, so it stays at the high-coverage baseline of 3.

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 states a specific action and resource, 'Create a deposit in QuickBooks Online,' so an agent can tell it apart from sibling create_* tools at the resource-name level. It does not elaborate on what a deposit involves or why it differs from similar transaction-creation tools, so it is clear but not maximally informative.

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?

There is no guidance on when to use create_deposit versus alternatives such as create_payment, create_credit_card_payment_txn, or update_deposit. No exclusions, prerequisites, or routing hints are provided, leaving the agent to infer usage solely from the tool name.

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