get_host_details

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is fully covered without description help. The description adds that results are aggregated (counts alongside configuration), which is a genuine behavioral detail beyond the annotations, but says nothing about behavior when a host is missing or when a wildcard matches multiple hosts.

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 with no filler and the scope ('for one host') placed at the end as the qualifier. It is telegraphic to the point of being a noun list rather than a statement of action, which costs a little clarity but wastes nothing.

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 enumerated field list usefully tells the agent what comes back, which is the main thing an agent needs here. However, it omits how counts are scoped (time window for problem counts) and what happens with wildcard matches, leaving gaps for a detail-fetch tool.

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 100% and the single 'host' parameter already documents that it accepts a name, technical name, and wildcard. The description adds no format, casing, or ambiguity-resolution guidance, 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?

The description enumerates exactly what detail categories are returned (status, interfaces, groups, templates, tags, item/problem counts) and scopes it to 'one host', which implicitly separates it from list-style siblings like search_hosts. It lacks an explicit verb and never names a sibling to contrast with, so differentiation rests on inference.

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?

There is no when-to-use guidance: nothing says to call this after search_hosts to resolve a host name, nor when to prefer get_triggers, get_latest_values, or zabbix_hosts instead. The 'one host' phrasing hints at a single-host lookup after discovery, but the agent must infer that entirely.

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