Verify dental benefits for a batch of patients (synthetic demo)

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

Annotations only declare readOnlyHint=false and openWorldHint=false; the description goes far beyond them by disclosing the deterministic engine, the returned fact set, the NOT_VERIFIED/NEEDS_HUMAN return contract (no plan data, rule IDs in reasons, review_ticket), and that notes are stored as data and never interpreted. The audit-log storage is consistent with readOnlyHint=false, so no contradiction.

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?

Front-loaded with the core action and batch scope, and each following sentence contributes operational value (determinism, unverified rows, quoting rules, injection defense). It is dense and runs long as one paragraph, and the payment disclaimer is boilerplate, but nothing is redundant.

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 no output schema, the description takes on the return-value burden and covers it, enumerating status, covered_percent, frequency, waiting period, deductible and maximum remaining, plus citations, reasons and review_ticket. An agent has everything needed to call it and interpret results 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 100% and every field is documented there, so the schema carries the parameter burden. The description reinforces the batch-size limit and the inert notes field but adds no format or validation detail beyond what the schema already states, and never mentions provider_id, member_id or patient_dob.

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?

Names a specific verb and resource (verify benefits) plus the exact scope (1-25 patients, synthetic demo data). It also distinguishes itself from the follow-up tool by stating that get_plan_clause is the way to show clause text behind a citation.

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?

Gives explicit batching instructions ('call it once per batch; split longer lists into batches of 25') and an explicit alternative for a related need ('use get_plan_clause to show the text behind a citation'). It also states the negative behavior: never compute, estimate or round coverage yourself.

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