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

With no annotations, the description carries the burden but does give useful return-shape context: it returns every detail line and source links, which tells the agent to expect a larger payload than a search hit. It says nothing about error behavior for invalid/expired ids or whether ids are stable, which matters for a detail-lookup tool.

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?

One sentence, front-loaded with the action and resource, with the id provenance and the return contents appended in order of usefulness. Nothing is wasted and nothing needs reordering.

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?

For a one-parameter, non-destructive detail fetch with no output schema, the description covers what it does, where the id comes from, and what comes back. Only the invalid-id behavior is left unaddressed, which is a minor gap at this complexity level.

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 0% and the only parameter is a bare string, so the description's note that the id comes from search_hawaii results is the sole semantic anchor and does add real value. However, it gives no format hints, no statement that the id is opaque or case-sensitive, and no failure semantics.

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 ("Get the full details of one Ask Hawaiʻi entry") plus the lookup key ("by its id"), which cleanly separates it from the search/list siblings. An agent can tell this is a single-record detail fetch without opening the schema.

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?

"id (from search_hawaii results)" gives concrete guidance on how to obtain the required input, effectively routing the agent through search_hawaii first. It stops short of explicit exclusions (e.g., what to do when the id is unknown or stale), so usage is clear but not fully bounded.

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