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SanLangLOVE

Simple Calculator MCP

by SanLangLOVE

multiply

Calculate the product of two numbers using this mathematical tool from the Simple Calculator MCP server. Enter two numerical values to get their multiplication result.

Instructions

计算两个数字的乘积

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
aYes第一个数字
bYes第二个数字

Implementation Reference

  • The handler function for the 'multiply' tool. It extracts parameters 'a' and 'b' from the arguments, computes their product, and returns a text response with the formatted result.
    case "multiply": {
      const { a, b } = args as { a: number; b: number };
      const result = a * b;
      return {
        content: [
          {
            type: "text",
            text: `${a} × ${b} = ${result}`,
          },
        ],
      };
    }
  • The schema definition for the 'multiply' tool, including name, description, and inputSchema specifying two required number parameters 'a' and 'b'.
    {
      name: "multiply",
      description: "计算两个数字的乘积",
      inputSchema: {
        type: "object",
        properties: {
          a: {
            type: "number",
            description: "第一个数字",
          },
          b: {
            type: "number",
            description: "第二个数字",
          },
        },
        required: ["a", "b"],
      },
    },
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the mathematical operation without mentioning any behavioral traits such as error handling (e.g., for non-numeric inputs), performance characteristics, or side effects. This leaves significant gaps for an AI agent to understand how the tool behaves beyond its basic function.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence ('计算两个数字的乘积') that directly states the tool's purpose without any wasted words. It is appropriately sized and front-loaded, making it easy for an AI agent to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's low complexity (basic arithmetic), 100% schema coverage, and no output schema, the description is minimally adequate. However, it lacks context about return values (e.g., what the product output looks like) and behavioral details, which could be important for an AI agent to use it correctly in varied scenarios.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% description coverage with clear parameter descriptions ('第一个数字' and '第二个数字'), so the schema does the heavy lifting. The tool description adds no additional meaning beyond what the schema provides, such as explaining parameter interactions or constraints, which aligns with the baseline score when schema coverage is high.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose as '计算两个数字的乘积' (calculates the product of two numbers), which is a specific verb+resource combination. However, it doesn't explicitly differentiate from sibling tools like 'multiply' vs 'add' or 'divide', though the mathematical operation is inherently distinct.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

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 'add', 'divide', or 'power'. It states what the tool does but offers no context about appropriate use cases, prerequisites, or comparisons with sibling tools.

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

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