加法工具

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

No annotations are provided, so the description carries the full burden. It mentions the tool returns a result, which is basic behavioral information, but lacks details like error handling, performance characteristics, or any constraints. For a simple arithmetic tool, this is minimal but not entirely absent.

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, clear sentence with no wasted words: '将两个数字相加并返回结果'. It is appropriately sized and front-loaded, making it easy to understand immediately.

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 low complexity (simple arithmetic), the presence of an output schema (which handles return values), and the description's basic clarity, it is mostly complete. However, the lack of usage guidelines and minimal parameter semantics slightly reduce completeness for an AI agent.

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 0% description coverage, but the description adds some semantic context by specifying that the parameters are '两个数字' (two numbers). However, it doesn't explain what 'a' and 'b' represent beyond being numbers, leaving gaps in understanding their roles.

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's purpose: '将两个数字相加并返回结果' (adds two numbers and returns the result). It specifies the verb (adds) and resource (two numbers), but doesn't explicitly differentiate from sibling tools like 'subtract' or 'multiply' beyond the inherent meaning of 'add'.

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 guidance on when to use this tool versus alternatives like 'subtract', 'multiply', or 'divide'. It states what the tool does but offers no context about appropriate use cases or exclusions.

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