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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds the underlying endpoint (GET /v3/bookings/{id}) and the set of returned fields, but says nothing about not-found behavior, rate limits, or expansion options for the linked sale.

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 compact sentences: the payload summary is front-loaded and the endpoint follows as supporting detail. No filler and nothing redundant.

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, listing the returned fields is genuinely useful in telling the agent what it gets back in one call. It stops short of describing the shape of those fields or what 'the linked sale' contains, so it is strong but not exhaustive for a single-parameter getter.

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?

Only one parameter and schema coverage is 100% — the schema already documents booking_id as a positive AgendaPro booking id. The description adds nothing about id semantics or format beyond 'by id', so the 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?

States a specific verb+resource: fetch one booking by id, and enumerates the returned fields (status, service, provider, client id, location, prices, notes, linked sale). The singular 'One booking by id' implicitly separates it from agendapro_list_bookings, though no sibling is named.

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?

Usage is only implied by 'by id' — an agent can infer this is the lookup for a known booking id rather than a search. No explicit when-to-use, no mention of when to prefer list_bookings or search, and no preconditions stated.

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