// SCAN REPORT

Calculator MCP

7 tools. 6 can modify or destroy data without limits.

6 write tools that can modify data. Rate limits recommended.

Last updated: 1 Jul 2026

6 can modify or destroy data

1 read-only

7 tools total

Community server · catalogue entry verified 01/07/2026

How to control Calculator MCP ↓

TOOL MAP

What Calculator MCP exposes to your agents

Read (1) Write / Execute (6) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous Calculator MCP tools

Execute · Low factorial Factorial calculation is a computational operation that executes a mathematical function. Execute · Low multiply The tool performs a mathematical computation (multiplication). Execute · Low power The tool performs an arithmetic exponentiation operation. Write · Medium add 执行浮点数加法运算

6 of Calculator MCP's 7 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Calculator MCP

PolicyLayer is an MCP gateway — it sits between your AI agents and Calculator MCP, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "add": {
    "limits": [
      {
        "counter": "add_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "subtract": {
    "limits": [
      {
        "counter": "subtract_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Calculator MCP — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON CALCULATOR →

Instant setup, no code required.

FULL CATALOGUE

All 7 Calculator MCP tools

EXECUTE 3 tools

Execute factorial 计算整数阶乘 Execute multiply 执行浮点数乘法运算 Execute power 计算幂运算

WRITE 3 tools

Write add 执行浮点数加法运算 Write divide 执行浮点数除法运算 Write sqrt 计算平方根

READ 1 tools

Read subtract 执行浮点数减法运算

FAQ

Questions about Calculator MCP

How do I prevent bulk modifications through Calculator MCP? +

The Calculator MCP server has 3 write tools including add, divide, sqrt. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Calculator MCP.

How many tools does the Calculator MCP server expose? +

7 tools across 1 categories: Write. 1 are read-only. 6 can modify, create, or delete data.

How do I enforce a policy on Calculator MCP? +

Register the Calculator MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Calculator MCP tool call.

Deterministic rules across all 7 Calculator MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON CALCULATOR →

Instant setup, no code required.

7 Calculator MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.