두 개의 숫자와 연산자를 입력받아 사칙연산 결과를 반환합니다.
AI agents call calculator to retrieve information from TypeScript MCP Server Boilerplate without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The calculator tool performs deterministic arithmetic operations (addition, subtraction, multiplication, division) on provided inputs and returns a result. This matches the Read category as it has no side effects—it does not create, modify, delete, execute external code, or move money. The risk is minimal; misuse by an AI agent would only produce incorrect arithmetic calculations with no external consequences.
From the tool's definition The tool description states it 'takes two numbers and an operator as input and returns the result of arithmetic operations' (translated from Korean: '두 개의 숫자와 연산자를 입력받아 사칙연산 결과를 반환합니다').
Attacks that exploit this kind of access
두 개의 숫자와 연산자를 입력받아 사칙연산 결과를 반환합니다. It is categorised as a Read tool in the TypeScript MCP Server Boilerplate MCP Server, which means it retrieves data without modifying state.
Register the TypeScript MCP Server Boilerplate MCP server in PolicyLayer and add a rule for calculator: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches TypeScript MCP Server Boilerplate. Nothing to install.
calculator is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the calculator rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for calculator. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
calculator is provided by the TypeScript MCP Server Boilerplate MCP server (shbaek2474/mcp-server-study). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
calculator is one line of TypeScript MCP Server Boilerplate's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →