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

No annotations are provided, so the description carries the full burden. '获取' implies a safe read, and it usefully enumerates what the metadata covers, but it says nothing about failure behavior if the standard is unavailable, permissions, or caching/freshness. An output schema exists, so return-format detail is legitimately omitted.

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?

A single front-loaded sentence with the identified standard and the payload contents; nothing extraneous, nothing missing.

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 parameterless, read-only metadata lookup with an output schema already defining the return shape, the description supplies everything an agent needs to select and call it.

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 baseline of 4 applies. The description correctly adds no parameter narrative, and the fields it lists describe output content rather than inputs.

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?

States a specific verb ('获取') and resource ('GB/T 47746-2026 标准的元信息') and even enumerates the returned fields (发布/实施日期、归口、篇幅、核心要求). An agent immediately knows this returns metadata for one specific standard; the sibling tools are unrelated Q&A utilities, so no further differentiation is needed.

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 explicit when-to-use or when-not-to-use statement is given, but the tightly scoped single-resource description makes the intended usage self-evident (call it when you need facts about this standard). No alternatives are named, though none of the siblings compete with it.

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