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

Annotations already declare readOnly, idempotent, openWorld and non-destructive, so the safety profile is covered. The description adds genuinely new behavioral context: it varies its return type by availability (waitlist for unsupported locations) and deliberately withholds intake/checkout/portal access, which prevents an agent from promising a patient a booking flow.

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 tight sentences, front-loaded with the return options that carry the most decision weight. No filler, though the second sentence's negative list is somewhat compressed.

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 usefully enumerates the possible return categories and their gating condition (availability by state). What remains unstated — how the state/service pair selects among branches — is largely covered by the enums in the schema.

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 100% with both parameters enum-documented, and the service description already points to list_care_options for valid identifiers. The description adds no parameter-level meaning, so the baseline 3 is appropriate.

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 enumerates the concrete return types (public guide, Start Visit picker, state waitlist, portal sign-in), which tells an agent what this router-like tool actually produces. It is less a verb+resource statement than an output inventory, so it is clear but not sharply distinguished from siblings like get_location_guidance or get_service_page.

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 negative clause ('No direct intake or checkout links, no form filling, no private portal access') sets boundaries that imply the tool's role, but there is no explicit when-to-use guidance or named alternative sibling. Usage must be inferred from the service/state inputs.

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