unsandbox.com

Anonymous remote code, compile, & execution API for humans & machine learning agents.

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unsandbox.
Required Dependencies

The F# examples below require the following 3rd party libraries:

  • FSharp.Data

Make sure these packages are installed in your environment before running the examples.

unsandbox.
POST https://api.unsandbox.com/execute

Execute code immediately and wait for results. Best for quick scripts and interactive use.

Request Parameters

Parameter Type Required Description
language string ✓ Programming language
code string ✓ Source code to execute
env object Environment variables (key-value pairs)
network_mode string "zerotrust" or "semitrusted"
ttl integer Timeout 1-900s (default: 60)
return_artifact boolean Return compiled binary
return_wasm_artifact boolean Return WebAssembly binary
input_files array Files to upload (see Input Files)

Example (F#)

open System
open System.Net.Http
open System.Text

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    let json = """{
  "language": "fsharp",
  "code": "printfn \"Hello from unsandbox!\""
}"""

    let content = new StringContent(json, Encoding.UTF8, "application/json")
    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.PostAsync("https://api.unsandbox.com/execute", content).Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Response (Success)

{
  "success": true,
  "stdout": "Hello from unsandbox!\n",
  "stderr": "",
  "exit_code": 0,
  "language": "python",
  "job_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "artifacts": [],
  "execution_mode": "pooled",
  "network_mode": "zerotrust",
  "total_time_ms": 523
}

Response (Error)

{
  "success": false,
  "stdout": "",
  "stderr": "SyntaxError: invalid syntax\n",
  "exit_code": 1,
  "language": "python",
  "job_id": "b2c3d4e5-f6a7-8901-bcde-f23456789012",
  "artifacts": [],
  "execution_mode": "pooled",
  "network_mode": "zerotrust",
  "total_time_ms": 312
}
unsandbox.
POST https://api.unsandbox.com/execute/async

Submit code for execution and receive a job ID to poll for results. Best for long-running scripts or when you need to decouple submission from execution.

Request Parameters

Parameter Type Required Description
language string ✓ Programming language
code string ✓ Source code to execute
env object Environment variables (key-value pairs)
network_mode string "zerotrust" or "semitrusted"
ttl integer Timeout 1-900s (default: 60)
return_artifact boolean Return compiled binary
return_wasm_artifact boolean Return WebAssembly binary
input_files array Files to upload (see Input Files)

Example (F#)

open System
open System.Net.Http
open System.Text

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    let json = """{
  "language": "fsharp",
  "code": "let rec factorial n =\n    if n <= 1 then 1\n    else n * factorial (n - 1)\n\nprintfn \"Computing factorial...\"\nprintfn \"%d\" (factorial 20)",
  "ttl": 300
}"""

    let content = new StringContent(json, Encoding.UTF8, "application/json")
    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.PostAsync("https://api.unsandbox.com/execute/async", content).Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Initial Response

{
  "job_id": "job_1234567890_abc",
  "status": "pending"
}
unsandbox.
GET https://api.unsandbox.com/jobs/{id}

Check the status and results of an asynchronous job. Poll this endpoint after submitting a job via /execute/async or /run/async.

URL Parameters

Parameter Type Description
id string Job ID returned from async endpoint

Example (F#)

open System
open System.Net.Http

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.GetAsync("https://api.unsandbox.com/jobs/job_1234567890_abc").Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Response (Completed)

{
  "job_id": "c3d4e5f6-a7b8-9012-cdef-345678901234",
  "status": "completed",
  "created_at": 1699564800,
  "started_at": 1699564801,
  "completed_at": 1699564805,
  "result": {
    "success": true,
    "stdout": "Hello from unsandbox!\n",
    "stderr": "",
    "exit_code": 0,
    "language": "python",
    "artifacts": [],
    "execution_mode": "pooled",
    "network_mode": "zerotrust",
    "total_time_ms": 4021
  }
}

Possible Status Values

  • pending - Job queued, waiting to execute
  • running - Job currently executing
  • completed - Job finished (check result field)
  • timeout - Job exceeded TTL limit
  • cancelled - Job was cancelled via DELETE
unsandbox.
GET https://api.unsandbox.com/jobs

List all active (pending or running) jobs for your API key. Useful for monitoring multiple async executions.

Example (F#)

open System
open System.Net.Http

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.GetAsync("https://api.unsandbox.com/jobs").Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Response

{
  "jobs": [
    {
      "job_id": "job_1234567890_abc",
      "status": "running",
      "language": "python",
      "submitted_at": "2024-01-15T10:30:00Z"
    },
    {
      "job_id": "job_0987654321_xyz",
      "status": "pending",
      "language": "go",
      "submitted_at": "2024-01-15T10:29:45Z"
    }
  ]
}
unsandbox.
DELETE https://api.unsandbox.com/jobs/{id}

Cancel a pending or running job. If the job is already executing, it will be terminated and partial output returned.

URL Parameters

Parameter Type Description
id string Job ID to cancel

Example (F#)

open System
open System.Net.Http

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.DeleteAsync("https://api.unsandbox.com/jobs/job_1234567890_abc").Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Response

{
  "message": "Job cancelled",
  "job_id": "e5f6a7b8-c9d0-1234-efgh-567890123456",
  "result": {
    "success": false,
    "stdout": "Partial output before cancel...",
    "stderr": "",
    "exit_code": -1,
    "language": "python",
    "artifacts": [],
    "execution_mode": "pooled",
    "network_mode": "zerotrust",
    "total_time_ms": 1523
  }
}
unsandbox.
POST https://api.unsandbox.com/run

Execute code with automatic language detection via shebang. Send raw code as the request body with Content-Type: text/plain.

Request

  • Content-Type: text/plain
  • Body: Raw code with shebang (e.g., #!/usr/bin/env python3)

Query Parameters

Parameter Type Required Description
env string URL-encoded JSON object with environment variables
network_mode string "zerotrust" or "semitrusted"
ttl integer Timeout 1-900s (default: 60)
return_artifact boolean Return compiled binary
return_wasm_artifact boolean Return WebAssembly binary

Example (F#)

open System
open System.Net.Http
open System.Text

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    let code = """printfn "Language auto-detected!""""

    let content = new StringContent(code, Encoding.UTF8, "text/plain")
    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.PostAsync("https://api.unsandbox.com/run", content).Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Response

{
  "success": true,
  "stdout": "Language auto-detected!\n",
  "stderr": "",
  "exit_code": 0,
  "language": "python",
  "detected_language": "python",
  "job_id": "f6a7b8c9-d0e1-2345-fghi-678901234567",
  "artifacts": [],
  "execution_mode": "pooled",
  "network_mode": "zerotrust",
  "total_time_ms": 412
}
unsandbox.
POST https://api.unsandbox.com/run/async

Submit code with automatic language detection and receive a job ID. Combines the convenience of /run with the flexibility of async execution.

Request

  • Content-Type: text/plain
  • Body: Raw code with shebang (e.g., #!/usr/bin/env ruby)

Query Parameters

Parameter Type Required Description
env string URL-encoded JSON object with environment variables
network_mode string "zerotrust" or "semitrusted"
ttl integer Timeout 1-900s (default: 60)
return_artifact boolean Return compiled binary
return_wasm_artifact boolean Return WebAssembly binary

Example (F#)

open System
open System.Net.Http
open System.Text

[<EntryPoint>]
let main argv =
    use client = new HttpClient()

    let code = """printfn "Running async with auto-detect!"
let sum = [1..1000000] |> List.sum
printfn "%d" sum"""

    let content = new StringContent(code, Encoding.UTF8, "text/plain")
    client.DefaultRequestHeaders.Add("Authorization", "Bearer Environment.GetEnvironmentVariable("UNSANDBOX_API_KEY") |> Option.ofObj |> Option.defaultValue "unsb-sk-test0-vault-unlck-12345"")

    let response = client.PostAsync("https://api.unsandbox.com/run/async", content).Result
    let result = response.Content.ReadAsStringAsync().Result

    printfn "%s" result
    0

Initial Response

{
  "job_id": "job_1234567890_abc",
  "status": "pending"
}

Job Result (via GET /jobs/{id})

{
  "job_id": "a7b8c9d0-e1f2-3456-ghij-789012345678",
  "status": "completed",
  "created_at": 1699564800,
  "started_at": 1699564801,
  "completed_at": 1699564802,
  "result": {
    "success": true,
    "stdout": "Running async with auto-detect!\n",
    "stderr": "",
    "exit_code": 0,
    "language": "ruby",
    "detected_language": "ruby",
    "artifacts": [],
    "execution_mode": "pooled",
    "network_mode": "zerotrust",
    "total_time_ms": 1234
  }
}
unsandbox.
Input Files

Upload files to your sandbox execution. Files are written to the working directory and can be accessed directly by filename.

File Object Schema

Field Type Required Description
filename string Filename (e.g., "data.csv"). If omitted, file is named by index: "0", "1", etc.
content string ✓ Base64-encoded file content

Example Request

{
  "language": "python",
  "code": "print(open('data.csv').read())",
  "input_files": [
    {
      "filename": "data.csv",
      "content": "bmFtZSxhZ2UKQWxpY2UsMzAKQm9iLDI1"
    }
  ]
}

Limits

  • Maximum files: 10 files per execution
  • Maximum total size: 10MB (decoded)
  • Maximum single file: 5MB (decoded)
  • Filename length: 256 characters max

File Access

Files are placed in the working directory. Access them directly:

  • Python: open('data.csv')
  • Node.js: fs.readFileSync('data.csv')
  • Ruby: File.read('data.csv')
  • Go: os.ReadFile("data.csv")

Security

  • Files are isolated per execution
  • Filenames cannot contain path separators (no / or ..)
  • Files are deleted after execution completes
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