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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds meaningful scope context by revealing there are two backing sources (site KB vs. docs.charter.boats), but says nothing about result format, ranking, or failure behavior.

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, both front-loaded: the core action first, then usage and the routing exception. No filler, and the example list is genuinely useful rather than decorative.

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 should sketch what comes back, but it never mentions return shape or result limits, and limit is undocumented. The usage coverage is good, but a search tool with a defaulted result cap leaves the agent guessing about output.

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 only 33%: q is described in the schema and limit is undocumented everywhere. The description partially compensates by explaining one enum value (type=api) and clarifying when to pick it, but 'article', 'question', 'both', and limit's semantics remain unexplained.

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 articles and Q&A on charter.boats'), which clearly separates it from the boat/booking/location tools in the sibling list. It does not name a sibling tool explicitly, so it stops short of the 5 bar, but the knowledge-base vs. transactional-data distinction is unmistakable.

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?

Gives explicit use conditions ('questions about booking process, costs, licenses, cancellation, deposits, check-in, packing') and an internal routing rule ('For developer questions about our API ... use type=api'). It lacks any when-not guidance against sibling tools such as search_boats, so it is clear context but not full alternative routing.

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