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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description does add that different facility types return different content blocks, but it provides no auth, rate-limit, or pagination behavior. It largely re-describes return content rather than adding behavioral context beyond the annotations.

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?

The verb and resource are front-loaded, but the long enumeration of return fields (name, address, phone, hours, pharmacy services, amenity answers, providers, languages, FAQs) is verbose and redundant given an output schema already exists.

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 single-parameter fetch with an output schema and read-only annotations, the description covers purpose, upstream dependency, and content shape. Nothing critical to correct invocation is missing; the return enumeration is simply surplus to requirement.

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% for the single url parameter, and the schema already states it is a facility profile URL from the search endpoint. The description's 'by URL' adds no syntax or format detail beyond what the schema provides, so 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?

States a specific verb ('Get') plus the exact resource (Healthgrades pharmacy/urgent care/group practice profile by URL). It is clearly distinguishable from sibling tools like healthgrades_hospital and healthgrades_physician. An agent can tell what resource this returns without opening the schema.

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?

Explicitly names the prerequisite sibling and the condition: 'Use after healthgrades_facilities_search with type pharmacy, urgent_care, or group_practice.' This routes the agent to the correct upstream call and enumerates the accepted type values that qualify.

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