显示 DM8 表结构

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

No annotations provided; the description lacks disclosure of behavioral traits such as being read-only, authentication needs, or potential side effects. While it implicitly suggests a read operation, this is not explicitly stated, leaving room for ambiguity.

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, efficient sentence that conveys all necessary information without extraneous content. It is well-structured and avoids redundancy.

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?

Given the tool's simplicity and lack of output schema, the description adequately covers what is returned (column names, types, lengths, nullable). However, it might omit additional metadata like default values or precision, leaving minor gaps.

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 100%, with each parameter having a clear description. However, the tool description adds no further detail beyond the schema, maintaining a baseline score. No additional semantic value provided.

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?

Description explicitly states it returns column name, type, length, and nullable information, which clearly defines the tool's function. It distinguishes from siblings: dm8_list_tables lists table names, dm8_execute_query executes queries, while this tool provides table schema metadata.

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 this tool vs alternatives. The description implies it is for obtaining table structure, but it does not mention situations where dm8_list_tables or dm8_execute_query would be more appropriate, nor any prerequisites or context.

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