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

With no annotations, the description carries the full burden. It does disclose that the tool aggregates data by provider and includes cost and pending approvals, which is useful behavioral context. However, it does not mention whether this is a read-only operation, any permission requirements, or potential side effects. For a get operation, it adds some value but lacks depth.

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, concise sentence that packs useful information without any fluff. It front-loads the core purpose and provides examples of what the summary includes.

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 relatively simple, and the description covers the return content. However, without an output schema or annotations, the description does not fully clarify the input parameters or the overall operation context. It is minimally complete but leaves gaps in parameter handling and expected usage.

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 compensate for this. It only implicitly references 'period' via the word 'periodo', but does not explain apiKey or orgSlug, nor the format expected for periodo. The parameter semantics are largely unexplained.

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 ('Get payroll summary'), the resource (payroll summary for a period), and the content (total per provider, total cost, pending approvals). This is specific and distinguishes it from sibling tools like payroll_list_records, which likely lists individual records rather than a summary.

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 provides no guidance on when to use this tool versus alternatives. It does not mention any exclusions, prerequisites, or why one might choose this over payroll_list_records or report_dashboard. Usage context is implied only by the word 'summary'.

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