ShowCursorByTime

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

No annotations are present, so the description must fully disclose behavioral traits. It provides none: no indication of read-only vs. mutating behavior, permissions required, side effects, rate limits, or return value structure. The agent is left completely in the dark about what the tool does when invoked.

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 short sentence, but it is under-specification rather than conciseness. It contains no substantive content that helps an agent, so the brevity is not a virtue.

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 6 parameters, no output schema, no annotations, and a one-line non-description, this tool is severely under-documented. An agent cannot determine what the tool does, how to use it, or what it returns. This is completely inadequate for even basic operation.

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 only 33%, and the description adds no parameter information beyond what is already in the schema. The bare parameters (_from, group_id, shard_id, stream_id) are not explained, and the description offers no guidance on how they relate to the operation or how to construct valid input.

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 ShowCursorByTime' merely restates the tool name with a service qualifier. It does not state what the operation does, what action is performed, or what resource it acts on. It is indistinguishable from sibling tools like ShowCursorTime and gives no verb+resource clarity.

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 usage guidance is provided. There is no mention of when to use this tool versus alternatives such as ShowCursorTime, ListLogs, or other cursor-related operations. The description offers no context, prerequisites, or exclusions.

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