run_python_code_in_sandbox

Execute Python code securely in an isolated environment with the Modal MCP Toolbox. Specify version, dependencies, and optional file handling for safe code testing and execution.

Instructions

Runs python code in a safe environment and returns the output.

Usage:
   run_python_code_in_sandbox("print('Hello, world!')")
   run_python_code_in_sandbox("import requests

print(requests.get('https://icanhazip.com').text)", requirements=["requests"])

Input Schema

Name	Required	Description	Default
`code`	Yes	The python code to run.
`mount_directory`	No	Allows you to make a local directory available at `/mounted-dir` for the code in `code`. Needs to be an absolute path. Writes to this directory will NOT be reflected in the local directory.
`pull_files`	No	List of tuples (absolut_path_sandbox_file, absolute_path_local_file). When provided downloads the file(s) from the sandbox to the local file(s).
`python_version`	No	The python version to use. If not provided defaults to 3.13	3.13
`requirements`	No	The requirements to install.

Input Schema (JSON Schema)

{
  "properties": {
    "code": {
      "description": "The python code to run.",
      "title": "Code",
      "type": "string"
    },
    "mount_directory": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Allows you to make a local directory available at `/mounted-dir` for the code in `code`. Needs to be an absolute path. Writes to this directory will NOT be reflected in the local directory.",
      "title": "Mount Directory"
    },
    "pull_files": {
      "anyOf": [
        {
          "items": {
            "maxItems": 2,
            "minItems": 2,
            "prefixItems": [
              {
                "type": "string"
              },
              {
                "type": "string"
              }
            ],
            "type": "array"
          },
          "type": "array"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "List of tuples (absolut_path_sandbox_file, absolute_path_local_file). When provided downloads the file(s) from the sandbox to the local file(s).",
      "title": "Pull Files"
    },
    "python_version": {
      "default": "3.13",
      "description": "The python version to use. If not provided defaults to 3.13",
      "title": "Python Version",
      "type": "string"
    },
    "requirements": {
      "anyOf": [
        {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "The requirements to install.",
      "title": "Requirements"
    }
  },
  "required": [
    "code"
  ],
  "title": "run_python_code_in_sandboxArguments",
  "type": "object"
}

Modal MCP Toolbox

run_python_code_in_sandbox

Instructions

Input Schema

Input Schema (JSON Schema)

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