// SCAN REPORT

MCP Demo Server

4 tools. 2 can modify or destroy data without limits.

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

Last updated: 4 Jul 2026

2 can modify or destroy data

2 read-only

4 tools total

Community server · catalogue entry verified 04/07/2026

How to control MCP Demo Server ↓

TOOL MAP

What MCP Demo Server exposes to your agents

Read (2) Write / Execute (2) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous MCP Demo Server tools

Execute · Low calculator The calculator executes mathematical computations based on user-provided arguments. Write · High file_operations Although this tool includes Read operations (read, list, exists), the presence of 'write' capability elevates it to the Write category per the severity hierarchy.

2 of MCP Demo Server's 4 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control MCP Demo Server

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

Rate limit write operations

{
  "file_operations": {
    "limits": [
      {
        "counter": "file_operations_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "timestamp": {
    "limits": [
      {
        "counter": "timestamp_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 MCP Demo Server — 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 MCP DEMO →

Instant setup, no code required.

FULL CATALOGUE

All 4 MCP Demo Server tools

EXECUTE 1 tools

Execute calculator Perform basic mathematical operations (add, subtract, multiply, divide)

WRITE 1 tools

Write file_operations Perform file system operations (read, write, list, exists)

READ 2 tools

Read timestamp Get the current timestamp in various formats Read weather Get simulated weather information for a city

FAQ

Questions about MCP Demo Server

How do I prevent bulk modifications through MCP Demo Server? +

The MCP Demo Server server has 1 write tools including file_operations. 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 MCP Demo Server.

How many tools does the MCP Demo Server MCP server expose? +

4 tools across 2 categories: Read, Write. 2 are read-only. 2 can modify, create, or delete data.

How do I enforce a policy on MCP Demo Server? +

Register the MCP Demo Server 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 MCP Demo Server tool call.

Deterministic rules across all 4 MCP Demo Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON MCP DEMO →

Instant setup, no code required.

4 MCP Demo Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.