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

With no annotations, the description carries full burden. It only mentions it is browser-based and generates from account balances, but does not disclose what happens to inputs, whether it is read-only, or any limitations. It omits details about output format or error behavior.

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 a single purposeful sentence plus a brief parenthetical. It is front-loaded and free of fluff.

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-parameter tool with no annotations or output schema, the description is too sparse. It does not explain what a trial balance sheet contains, how account balances are provided, or what the user receives. This leaves significant gaps for an agent deciding to invoke it.

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 has zero parameters, and the description appropriately indicates the tool works from account balances. However, since there are no parameters, the description adds minimal semantics beyond stating the input source. Score 4 as baseline for zero-param tools.

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 specific function: 'Generate trial balance sheets from account balances.' This distinguishes it from sibling tools like balance-sheet or profit-loss, which produce different financial reports.

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?

The description implies it is used for generating trial balance sheets but provides no explicit guidance on when to choose this tool versus alternatives like balance-sheet or cash-flow-statement. No prerequisites or exclusions are mentioned.

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