index_detail_cni

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

Annotations already declare read-only and idempotent. The description adds return type (pandas.DataFrame) and parameter semantics, but not much else. No contradiction.

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?

Description is short, but the first line repeats the title from annotations, and the URL is arguably unnecessary. Nevertheless, it is structured with param/return docs.

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 tool promises 'specified date' components, but the schema has no date parameter. This is a critical gap; the agent cannot control the date. Also, no output schema, but the description says DataFrame.

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 has 0% coverage, so the description compensates by specifying that symbol is the index code and type str. It also provides an example URL. Could be improved with valid code range/format.

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 returns sample constituents for a specified date for the CNI (Guozheng) index, with a specific resource URL and return type. It distinguishes from sibling index tools by specifying the CNI index and 'sample details' domain.

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 on when to use vs alternatives; it doesn't mention that it's for CNI index or exclude other index sources. There are many sibling index constituent tools, but no reference to them.

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