UpdateHostGroup

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

With no annotations, the description carries the full burden of disclosing behavioral traits. It says only 'operation,' so there is no mention of side effects, permissions, idempotency, return values, or any other behavioral aspect. The agent cannot infer what updating a host group entails.

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 one-sentence description is severely under-specified, not concise. It repeats the tool name and provides no actionable content. This is the type of brevity that fails to inform rather than efficiently communicating essential details.

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 an update operation with three parameters (one a nested object), no annotations, and no output schema, this description is drastically inadequate. The agent has no idea what can be updated, required fields, request body format, or response expectations, making correct invocation unlikely.

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 description adds no meaning to the parameters. Although the schema describes region and project_id (67% coverage), the critical 'body' parameter with its nested properties is completely undocumented. The description could have clarified the body structure or update semantics, but it does not.

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 'Huawei Cloud LTS operation UpdateHostGroup' merely restates the tool name with the generic label 'operation'. It does not specify what the update does (e.g., modify host group name, tags, or members) and does not distinguish it from sibling tools like CreateHostGroup or DeleteHostGroup.

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 given about when to use this tool vs alternatives. The sibling list includes CreateHostGroup, DeleteHostGroup, and ListHostGroup, but the description offers no context, prerequisites, or exclusions, leaving the agent without decision support.

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