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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so safety is covered. The description adds useful scope information (it returns the entire directory, not a single record) and the shape of each entry. It omits anything about result size, pagination, or ordering, which matters for an unfiltered bulk read.

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?

A single front-loaded sentence: scope first, returned fields in a compact parenthetical, then the optional filter. Every clause carries information and nothing is repeated from the schema or annotations.

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 one-optional-parameter read with an output schema and full annotation coverage, the description supplies the scope and the returned fields. The main omission is pagination/volume behavior for an unfiltered directory dump, which an agent would want to know.

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% and the schema already explains that the value is a two-letter code or a state name. The description adds only that the filter is optional, which is consistent with required=0 but reinforces it. With the schema doing the heavy lifting, this is slightly above the baseline.

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?

"Every clinic in the directory with its practitioner and offices" states a specific verb-plus-resource plus the scope of the result set, and the parenthetical enumerates the returned fields. It implicitly contrasts with find_practitioners by emphasizing that this returns every clinic, though it never names that sibling explicitly.

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?

"Optional state filter" implies the one usage variation (filtered vs. unfiltered) but gives no explicit when-to-use guidance. There is no statement about when an agent should prefer this bulk listing over find_practitioners or get_practitioner.

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