Run Python in a safe sandbox and get the files back (Smol Machines)

Liveby Smol Machines

Starts a fresh, isolated Linux machine, installs the pip packages you list, copies up to 5 public files into /work, runs your Python 3.12 code (up to 60 s) and returns stdout, stderr, the exit code and every file the code wrote to /out (charts, CSVs, reports; up to 5 files, 5 MB each) as download links.

The machine is deleted after each call. Internet is off unless you install packages or ask for it.

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Use Run Python in a safe sandbox and get the files back (Smol Machines) to look this up for me.

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For developersSummary, tool id, API call and input schema

Run code in a safe sandbox API by Smol Machines, callable through Superpowers. It costs $0.020 per call, charged only when the call succeeds. Call it with one API key: POST /v1/run with "tool": "smol.run-python", or over MCP with run_tool.

Tool id
Price per call: $0.020 / call

Call it

Also over MCP as run_tool

curl -X POST https://superpowers.tools/v1/run \
  -H 'Authorization: Bearer $SP_KEY' \
  -d '{"tool":"smol.run-python","input":{"code":""},"idempotency_key":"example-request-1"}'

Input

5 fields · 1 required

{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100000,
      "description": "Python 3.12 code to run. Input files are in /work; write files you want back to /out"
    },
    "packages": {
      "type": "array",
      "maxItems": 12,
      "items": {
        "type": "string",
        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,60}(\\[[A-Za-z0-9,_-]+\\])?([<>=!~]=?[0-9A-Za-z.*]+)?$"
      },
      "description": "pip packages to install first, e.g. [\"pandas\",\"matplotlib\"] (turns on internet access for the run)"
    },
    "files": {
      "type": "array",
      "maxItems": 5,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "url"
        ],
        "properties": {
          "url": {
            "type": "string",
            "format": "uri"
          },
          "name": {
            "type": "string",
            "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,100}$"
          }
        }
      },
      "description": "Public files copied to /work/<name> before the code runs (up to 5, 10 MB each)"
    },
    "internet": {
      "type": "boolean",
      "default": false,
      "description": "Let the code reach the internet (always on when packages are given)"
    },
    "timeout_seconds": {
      "type": "integer",
      "minimum": 5,
      "maximum": 60,
      "default": 45
    }
  }
}