index_stock_cons_sina

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true, covering the safety profile. The description adds the limitation that only a limited number of indices are available, which is useful behavioral context. No contradiction with annotations.

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 front-loaded with the core purpose, followed by a URL and standard parameter/return documentation. Every part contributes useful information, with no unnecessary verbosity.

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 a simple read-only tool with one parameter, the description covers the basic return type (pandas.DataFrame) and parameter, and annotations cover safety. However, it omits what the returned DataFrame columns are, does not list or link to supported index codes, and does not clarify the symbol format beyond 'index code', leaving some ambiguity for correct invocation.

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 input schema has zero description coverage, so the description must compensate. It does provide the parameter meaning (指数代码/index code), type (str), and the default from schema, but lacks details about acceptable symbol formats or supported index codes, which is a notable gap for a tool with one parameter.

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 states the tool retrieves constituent stocks of an index from Sina's new index page, with an example URL. It specifies the resource (Sina index constituents) and the action (获取/retrieve), but does not explicitly differentiate from sibling index constituent tools like index_stock_cons or index_stock_cons_csindex.

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?

The description provides no explicit guidance on when to use this tool versus alternatives, only a caveat that the interface currently supports a small number of indices. It does not mention sibling tools or suggest when not to use it, leaving usage decisions largely to the agent.

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