zabbix_graph_exists

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

With no annotations, the description must fully disclose behavior. It does not state that the tool is read-only, whether authentication is required, or what it returns. The description adds no behavioral context.

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?

While very short, the description is under-specified rather than concise. It omits critical information and does not earn its place by providing useful content.

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?

Given the simplicity of an existence check, the description is too minimal. It does not differentiate from many sibling 'exists' tools, nor does it explain the return value despite an output schema existing. The agent lacks enough context to use the tool correctly.

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 0%, and the description adds no meaning to the single 'params' parameter. The schema itself is vague (any object or null), and the description offers no hints on required fields or structure.

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 is 'Zabbix API graph.exists method', which is nearly a tautology of the tool name. It does not specify what 'graph' refers to or how existence is determined, and it fails to distinguish from sibling 'exists' tools like zabbix_action_exists or zabbix_host_exists.

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 (e.g., zabbix_graph_get). There is no mention of prerequisites, context, or typical use cases.

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