JavaScript Sandbox MCP Server

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execute_js

Run JavaScript code in a secure, isolated environment with customizable memory and timeout limits for safe execution within the MCP server system.

Instructions

Execute JavaScript code in an isolated environment

Input Schema

Name	Required	Description
`code`	Yes	JavaScript code to execute
`memory`	No	Memory limit in bytes
`timeout`	No	Maximum execution time in milliseconds

Input Schema (JSON Schema)

{
  "properties": {
    "code": {
      "description": "JavaScript code to execute",
      "type": "string"
    },
    "memory": {
      "description": "Memory limit in bytes",
      "maximum": 104857600,
      "minimum": 1048576,
      "type": "number"
    },
    "timeout": {
      "description": "Maximum execution time in milliseconds",
      "maximum": 30000,
      "minimum": 100,
      "type": "number"
    }
  },
  "required": [
    "code"
  ],
  "type": "object"
}

Install Server

HTTP connection URL

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