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

Annotations already cover the safety profile (readOnlyHint true, destructiveHint false, openWorldHint true), so the description's job is to add context — and it does, by disclosing the returned fields and the app-link behavior including the App Store / Google Play fallback. It omits result-count limits, ordering, or pagination, which keeps it below a 5 for a network-backed search.

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 with the purpose and search scope front-loaded, followed by a compact return-value summary. Every clause carries information an agent would otherwise have to guess.

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 return fields and the app-link fallback, and it covers the two geographic input modes for a 6-parameter all-optional tool. Minor gaps remain around what happens if both city and coordinates are given and how many results come back.

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%, so every parameter is already documented in the schema, and the baseline of 3 applies. The description reinforces the city-vs-coordinates alternative and the transport modes matching the enum, but adds no format or constraint detail beyond what the schema states.

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 and resource ("Search Votura for ... tours") plus the locational scope (near a city or coordinates) and the supported transport modes. It is clear enough to distinguish from get_tour_details, but never mentions search_places, so the boundary with the other discovery sibling is left implicit.

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 implied by "near a city or coordinates" and the schema note that coordinates can be supplied instead of a city, giving the agent a sense of the two input modes. However, there is no explicit statement of when to prefer this over search_places or get_tour_details, and no when-not guidance.

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