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

No annotations are provided, so the description must carry the behavioral burden. It does disclose that this is a GET request and therefore a read-only operation, and it notes the explicit company requirement, but it does not discuss permissions, pagination, rate limits, or other runtime 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 short and front-loaded with the operation type and endpoint, followed by required usage constraints. Every sentence contributes, though the endpoint path is somewhat implementation-level.

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?

With an output schema present, the description does not need to explain return values. For a two-parameter report tool, it supplies the key invocation constraints and a pointer for filter details, making it largely complete, though it lacks sibling-report differentiation.

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%, so the description must compensate, and it does useful work: it states company_name is explicitly required and that dateFrom/dateTo are required query fields. It also points to describe_nextesy_operation for additional filters, covering the otherwise opaque query object reasonably well.

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 names a specific verb/resource combination (GET profit-and-loss report) and the underlying endpoint, so the agent can identify it as a financial report reader. It does not distinguish this report from sibling report tools such as get_balance_sheet or get_account_balance_report, which limits it to a 4.

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 gives required invocation context: a company must be specified explicitly and dateFrom/dateTo are required query fields. It also routes the agent to describe_nextesy_operation for available filters, but it does not explain when to use this report versus other financial reports.

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