zabbix_hostgroup_exists

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

No annotations are present, and the description does not disclose behavioral traits such as side effects, authentication requirements, or rate limits. The tool performs a read-only existence check, but this is not explicitly stated.

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?

The description is a single sentence, making it concise. However, it sacrifices informativeness for brevity, providing minimal value.

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 an output schema present but no description of return values, and significant sibling overlap, the description is incomplete. It does not help the agent understand how to use the tool effectively.

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?

The schema has 0% description coverage, and the description adds no information about the 'params' parameter. The agent receives no guidance on how to structure the input for checking hostgroup existence.

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 states 'Zabbix API hostgroup.exists method', which identifies the underlying API call. Combined with the tool name, it implies checking existence, but it does not explicitly state that it returns a boolean for hostgroup existence. It is not a tautology but lacks clarity on what exactly 'exists' means in this context.

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?

No guidance is provided on when to use this tool versus alternatives like zabbix_hostgroup_get. The description neither specifies scenarios for checking existence nor excludes cases where get would be more appropriate.

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