profit_and_loss

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

With no annotations, the description must carry the behavioral burden; it explicitly states 'read-only', which conveys a non-mutating safety trait. It does not disclose how date parameters shape the report, whether a default period is applied, or what the returned data represents beyond the output schema.

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 entire description is six words and front-loads the key facts: the resource and its read-only nature. There is no filler or repetition.

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 tool is simple, has an output schema, and the description plus parameter names convey a date-bounded P&L snapshot. Still, with no required parameters, an agent would not know what period is returned when both dates are omitted, and it lacks any indication of how this report relates to sibling financial reports.

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 0%, and the description does not mention from_date or to_date at all. The parameter names are mildly self-explanatory, but the description adds no meaning about formats, boundaries, or default behavior.

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 identifies a clear resource ('profit and loss snapshot') and qualifies it as read-only, which makes the tool's purpose intelligible. However, it uses a noun phrase rather than a specific verb ('get', 'retrieve'), and does not distinguish it from sibling report tools like balance_sheet or trial_balance.

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 this tool over alternatives such as balance_sheet, trial_balance, or tax_summary. The read-only label implies safety but does not establish selection criteria or exclusions.

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