index_option_1000index_qvix

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true. The description adds the return type (pandas.DataFrame) and a source URL, which is some useful context, but it does not clarify the temporal scope of the data or update frequency. This is minimal but acceptable given the strong annotation coverage.

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 concise and well-structured, with a title, URL, and docstring. It is slightly redundant by repeating the tool name, but overall it is efficient and easy to scan.

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?

The description tells what is returned (QVIX series as a DataFrame) but does not specify whether it returns historical data, a single current value, or a date range. Given the lack of an output schema and the simplicity of the tool, more detail about the data's nature would improve completeness.

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 tool takes zero parameters, so the input schema is trivially 100% covered. The baseline for 0-parameter tools is 4, and the description does not need to explain any parameters. No additional parameter semantics are required.

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 clearly identifies the resource (中证1000股指期权波动率指数 QVIX) and provides a source URL. It unambiguously states what data the tool returns, but lacks an explicit verb like 'get' or 'fetch'—the purpose is implied by the name and the :return: line.

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 about when to use this tool versus the many sibling QVIX tools for other indices (e.g., index_option_300index_qvix). There is no mention of prerequisites, exclusions, or alternatives, so an agent receives no help in selecting this tool.

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