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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world, so the safety profile is covered. The description adds the useful behavioral note that content is published verbatim by the practice (a static, authoritative snapshot), but says nothing about freshness, caching, or return format.

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 dense sentence that front-loads the highest-value items (fee, insurance) and flows through payment methods to cancellation policy. It is somewhat list-heavy but every clause maps to a real returned field, so little is wasted.

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 carries the burden of describing returns, and it does so comprehensively for a zero-parameter read tool. Only minor gaps remain, such as the absence of any note on output structure or whether the data can go stale.

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?

The tool takes zero parameters, so the baseline is 4 and the schema has nothing to document. The description instead adds value by defining what the no-argument call yields, which is the relevant 'parameter' semantics here.

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 exact content the tool returns (session fee, insurance model, payment methods, cancellation policy) and pins the source as "exactly as Foundations publishes them," so an agent knows this is the authoritative fees/insurance lookup. It does not explicitly name or differentiate from siblings like get_practice_info or how_to_start, which keeps it from a 5.

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?

There is no statement of when to call this versus alternatives (e.g., get_practice_info for general practice details, how_to_start for onboarding). Usage is only implied by the content list, and no exclusions or prerequisites are given.

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