Printable quarterly summary

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 the output medium (plain-text, printable) and adds a scope disclaimer ('Educational totals only, never tax advice'), but stays silent on whether it mutates anything, what permissions are needed, or what the rendered output contains structurally. Useful but incomplete for an annotation-free tool.

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?

Two short sentences with the core purpose front-loaded and the period scope folded into a parenthetical rather than a separate clause. The disclaimer sentence is slightly boilerplate but carries a genuine scope restriction, so little is wasted.

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 simple two-optional-parameter render tool with no output schema, this is close to sufficient. The remaining gaps are the default behavior when no arguments are supplied and any indication of what the printed summary contains, which an agent would need to set expectations.

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 coverage is 0%, so the description must compensate. The parenthetical '(or all-time/yearly)' does add real meaning by implying that omitting parameters yields an all-time summary and that year/quarter scope the period, which the bare integer schema does not convey. It still leaves the interaction between year and quarter, and the valid range for year, undefined.

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 pairs a specific verb ('Render') with a specific resource ('printable, plain-text quarterly... summary with totals'), which clearly distinguishes it from siblings like export_csv (CSV format) and totals (raw numbers). It is clear without opening the schema, though it never names a sibling directly.

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?

Usage is implied through 'quarterly (or all-time/yearly)' and 'for your records binder,' which hints the tool is for human-readable record keeping rather than data extraction. However, there is no explicit guidance on when to prefer this over totals or export_csv, and no stated preconditions.

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