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

The description adds real behavioral context beyond annotations: the call is anonymous, SSN/ITIN-shaped input is refused rather than accepted, and no sensitive data is retained. It does not, however, reconcile this with readOnlyHint=false (and the schema's note that an assessment with intendedEmail is stored), so an agent could misread "nothing is stored" as "no record is created."

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?

Three short sentences, with the core action and the no-checkout scoping front-loaded, then the anonymity/PII guarantee. Every clause earns its place; only the clipped "An SSN-shaped or ITIN-shaped field" phrasing is slightly under-specified.

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, return values need no explanation, and the description covers the key safety behaviors an agent must know before calling. The main omission is guidance on the fully optional 9-parameter surface and the default/unknown-value behavior when inputs are omitted.

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 89% across 9 parameters, and the schema documents enum fallbacks, trimming, and email handling itself. The description contributes nothing parameter-specific, so baseline 3 applies despite no compensating gap to fill.

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?

States a specific verb+resource ("Assess formation need") and scopes it with "without checkout," which implicitly separates it from the checkout-oriented sibling prepare_application. It stops short of naming any sibling outright, but the purpose is unambiguous.

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?

"Without checkout" implies this is the pre-application, no-commitment assessment step versus prepare_application, so the usage context is inferable. There is no explicit when-to-use/when-not statement or named alternative, leaving the routing to inference.

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