Add a Money Lover transaction

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

With no annotations, the description carries the full burden. It discloses key behaviors: category ownership validation, duplicate blocking, and the confirmation requirement. It does not mention side effects like balance updates or failure modes, but the disclosed behaviors are significant.

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 two sentences, with the core action front-loaded and supporting details following. It is concise, avoids redundancy, and is well-structured for quick comprehension.

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 description gives enough context to understand the operation's nature but omits information about the return value or what happens on success/failure. Given that there is no output schema and the description does not mention these aspects, it is not fully complete for an agent to anticipate results.

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?

The schema provides descriptions for about 73% of parameters, and the tool description does not add extra meaning to the undocumented ones (e.g., token, with, allowDuplicate). The description relies on the schema, which covers most but not all parameters, so the score is moderate.

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 clearly states the action (create a transaction) and adds context about validation and duplicate blocking. However, it does not explicitly mention the resource (wallet) or differentiate from sibling tools, though the core purpose is evident.

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 specifies that explicit confirmation is required and that duplicates are blocked by default, which provides some usage guidance. However, it does not indicate when to use this tool versus preview_transaction or get_transactions, nor does it mention that this is the write operation.

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