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

Annotations already establish readOnly=false, openWorld=true and non-idempotent. The description adds real behavioral context beyond that: filing triggers a licensed loan officer to contact the borrower, and consent is a prerequisite. It omits the dry_run preview path (left to the schema) and any note on idempotency, so it is strong but not exhaustive.

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?

Four short sentences, front-loaded with the action and counterparty, then the return value, then the follow-up effect, then the disclaimers. Every sentence carries distinct information with no repetition of the name or title.

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 14-parameter tool with nested objects and no output schema, the description covers purpose, consent precondition, side effect, and return value. The dry_run option is described only in the schema, and no error or validation behavior is mentioned, but overall the agent has enough to decide and call correctly.

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 57%, which is mid-range, and the description says nothing about any of the 14 top-level parameters, including the heavily nested loan, borrowers, and property objects. The schema itself is richly annotated, so the baseline of 3 is appropriate, but the description adds no parameter-level meaning of its own.

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 and resource ('File a Uniform Residential Loan Application (Form 1003 / URLA)') with the counterparty and scope ('with Paramount Loan Services on behalf of a borrower'). It also states boundaries ('not a rate quote, a pre-approval or a credit decision') and the return value, so the agent can separate it from get_loan_application_schema and list_loan_programs without ambiguity.

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 supplies a precondition ('a borrower who has consented') and rules out adjacent-but-different actions (rate quote, pre-approval, credit decision). It does not point to sibling tools or say when to call get_loan_application_schema first, so it stops short of explicit when-vs-alternatives guidance.

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