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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds real value beyond that: it scopes the data as public-facing (the booking page) and explicitly excludes client data, which tells the agent what is safe to surface. It stops short of describing error behavior for an unknown or inactive slug.

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 sentences, front-loaded with the resource identity and followed by the return-field list; every clause carries information, and the field enumeration is load-bearing given there is no output schema. Slightly list-heavy but not padded.

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 returned fields, and the single required parameter is fully documented in the schema. What is missing is any note on behavior for an invalid slug or an unpublished provider, but for a simple read of one entity this is close to complete.

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 the slug field is documented as 'the part after getappty.com/'. The description only restates 'for a provider slug' without adding format, casing, or slug-resolution semantics, so it does nothing beyond the schema. Baseline 3 applies.

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 states a specific resource (a provider's public booking page, keyed by slug) and enumerates the payload: name, headline, time zone, currency, services, upcoming group sessions, booking URL. It contrasts with the sibling set implicitly via 'No client data', which separates it from list_clients/who_owes, but no sibling is named 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?

The word 'Public' and the absence of any session/booking mutation implies this is a read-only lookup of a provider's outward-facing profile, which is enough to infer usage. However, there is no explicit statement of when to reach for this versus get_booking_link or find_open_slots, and no mention of prerequisites or failure cases.

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