unsandbox.com
Anonymous remote code, compile, & execution API for humans & machine learning agents.
Docs 📚 View Pricing →The Zig examples below require the following 3rd party libraries:
std.http
Make sure these packages are installed in your environment before running the examples.
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 (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
const uri = try std.Uri.parse("https://api.unsandbox.com/execute");
const payload =
\\{"language":"zig","code":"const std = @import(\"std\");\npub fn main() !void {\n const stdout = std.io.getStdOut().writer();\n try stdout.print(\"Hello from unsandbox!\\n\", .{});\n}"}
;
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Content-Type", "application/json");
try headers.append("Authorization", auth_header);
var req = try client.request(.POST, uri, headers, .{});
defer req.deinit();
req.transfer_encoding = .{ .content_length = payload.len };
try req.start();
try req.writer().writeAll(payload);
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const parsed = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer parsed.deinit();
const result = parsed.value.object;
if (result.get("success").?.bool) {
std.debug.print("Output: {s}\n", .{result.get("stdout").?.string});
} else {
std.debug.print("Error: {s}\n", .{result.get("error").?.string});
}
}
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
}
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 (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
// Submit job
const uri = try std.Uri.parse("https://api.unsandbox.com/execute/async");
const payload =
\\{"language":"rust","code":"fn main() { println!(\"Computing...\"); }","ttl":300}
;
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Content-Type", "application/json");
try headers.append("Authorization", auth_header);
var req = try client.request(.POST, uri, headers, .{});
defer req.deinit();
req.transfer_encoding = .{ .content_length = payload.len };
try req.start();
try req.writer().writeAll(payload);
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const job = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer job.deinit();
const job_id = job.value.object.get("job_id").?.string;
std.debug.print("Job submitted: {s}\n", .{job_id});
// Poll for results
var status_url_buf: [256]u8 = undefined;
const status_url = try std.fmt.bufPrint(&status_url_buf, "https://api.unsandbox.com/jobs/{s}", .{job_id});
while (true) {
const status_uri = try std.Uri.parse(status_url);
var status_headers = std.http.Headers{ .allocator = allocator };
defer status_headers.deinit();
try status_headers.append("Authorization", auth_header);
var status_req = try client.request(.GET, status_uri, status_headers, .{});
defer status_req.deinit();
try status_req.start();
try status_req.finish();
try status_req.wait();
var status_body = std.ArrayList(u8).init(allocator);
defer status_body.deinit();
try status_req.reader().readAllArrayList(&status_body, 1024 * 1024);
const status = try std.json.parseFromSlice(std.json.Value, allocator, status_body.items, .{});
defer status.deinit();
const state = status.value.object.get("status").?.string;
if (std.mem.eql(u8, state, "completed")) {
const result = status.value.object.get("result").?.object;
if (result.get("success").?.bool) {
std.debug.print("Output: {s}\n", .{result.get("stdout").?.string});
} else {
std.debug.print("Error: {s}\n", .{result.get("stderr").?.string});
}
break;
} else if (std.mem.eql(u8, state, "timeout") or std.mem.eql(u8, state, "cancelled")) {
std.debug.print("Job {s}\n", .{state});
break;
}
std.time.sleep(1 * std.time.ns_per_s);
}
}
Initial Response
{
"job_id": "job_1234567890_abc",
"status": "pending"
}
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 (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
const job_id = "job_1234567890_abc";
var url_buf: [256]u8 = undefined;
const url = try std.fmt.bufPrint(&url_buf, "https://api.unsandbox.com/jobs/{s}", .{job_id});
const uri = try std.Uri.parse(url);
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Authorization", auth_header);
var req = try client.request(.GET, uri, headers, .{});
defer req.deinit();
try req.start();
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const job = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer job.deinit();
const status = job.value.object.get("status").?.string;
std.debug.print("Status: {s}\n", .{status});
if (std.mem.eql(u8, status, "completed")) {
const result = job.value.object.get("result").?.object;
std.debug.print("Success: {}\n", .{result.get("success").?.bool});
std.debug.print("Output: {s}\n", .{result.get("stdout").?.string});
}
}
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 executerunning- Job currently executingcompleted- Job finished (check result field)timeout- Job exceeded TTL limitcancelled- Job was cancelled via DELETE
List all active (pending or running) jobs for your API key. Useful for monitoring multiple async executions.
Example (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
const uri = try std.Uri.parse("https://api.unsandbox.com/jobs");
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Authorization", auth_header);
var req = try client.request(.GET, uri, headers, .{});
defer req.deinit();
try req.start();
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const jobs = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer jobs.deinit();
for (jobs.value.array.items) |job| {
const job_obj = job.object;
std.debug.print("{s}: {s} ({s})\n", .{
job_obj.get("job_id").?.string,
job_obj.get("status").?.string,
job_obj.get("language").?.string,
});
}
}
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"
}
]
}
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 (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
const job_id = "job_1234567890_abc";
var url_buf: [256]u8 = undefined;
const url = try std.fmt.bufPrint(&url_buf, "https://api.unsandbox.com/jobs/{s}", .{job_id});
const uri = try std.Uri.parse(url);
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Authorization", auth_header);
var req = try client.request(.DELETE, uri, headers, .{});
defer req.deinit();
try req.start();
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const result = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer result.deinit();
std.debug.print("Cancelled: {s}\n", .{result.value.object.get("message").?.string});
if (result.value.object.get("result")) |partial| {
std.debug.print("Partial output: {s}\n", .{partial.object.get("stdout").?.string});
}
}
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
}
}
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 (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
const uri = try std.Uri.parse("https://api.unsandbox.com/run");
const code =
\\#!/usr/bin/env python3
\\print("Language auto-detected!")
;
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Content-Type", "text/plain");
try headers.append("Authorization", auth_header);
var req = try client.request(.POST, uri, headers, .{});
defer req.deinit();
req.transfer_encoding = .{ .content_length = code.len };
try req.start();
try req.writer().writeAll(code);
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const result = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer result.deinit();
std.debug.print("Detected: {s}\n", .{result.value.object.get("detected_language").?.string});
std.debug.print("Output: {s}\n", .{result.value.object.get("stdout").?.string});
}
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
}
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 (Zig)
const std = @import("std");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var client = std.http.Client{ .allocator = allocator };
defer client.deinit();
const api_key = std.os.getenv("UNSANDBOX_API_KEY") orelse "unsb-sk-test0-vault-unlck-12345";
const auth_header = try std.fmt.allocPrint(allocator, "Bearer {s}", .{api_key});
defer allocator.free(auth_header);
// Submit job
const uri = try std.Uri.parse("https://api.unsandbox.com/run/async");
const code =
\\#!/usr/bin/env ruby
\\puts "Running async with auto-detect!"
;
var headers = std.http.Headers{ .allocator = allocator };
defer headers.deinit();
try headers.append("Content-Type", "text/plain");
try headers.append("Authorization", auth_header);
var req = try client.request(.POST, uri, headers, .{});
defer req.deinit();
req.transfer_encoding = .{ .content_length = code.len };
try req.start();
try req.writer().writeAll(code);
try req.finish();
try req.wait();
var body = std.ArrayList(u8).init(allocator);
defer body.deinit();
try req.reader().readAllArrayList(&body, 1024 * 1024);
const job = try std.json.parseFromSlice(std.json.Value, allocator, body.items, .{});
defer job.deinit();
const job_id = job.value.object.get("job_id").?.string;
std.debug.print("Job submitted: {s}\n", .{job_id});
// Poll for results
var status_url_buf: [256]u8 = undefined;
const status_url = try std.fmt.bufPrint(&status_url_buf, "https://api.unsandbox.com/jobs/{s}", .{job_id});
while (true) {
const status_uri = try std.Uri.parse(status_url);
var status_headers = std.http.Headers{ .allocator = allocator };
defer status_headers.deinit();
try status_headers.append("Authorization", auth_header);
var status_req = try client.request(.GET, status_uri, status_headers, .{});
defer status_req.deinit();
try status_req.start();
try status_req.finish();
try status_req.wait();
var status_body = std.ArrayList(u8).init(allocator);
defer status_body.deinit();
try status_req.reader().readAllArrayList(&status_body, 1024 * 1024);
const status = try std.json.parseFromSlice(std.json.Value, allocator, status_body.items, .{});
defer status.deinit();
const state = status.value.object.get("status").?.string;
if (std.mem.eql(u8, state, "completed")) {
const result = status.value.object.get("result").?.object;
std.debug.print("Detected: {s}\n", .{result.get("detected_language").?.string});
if (result.get("success").?.bool) {
std.debug.print("Output: {s}\n", .{result.get("stdout").?.string});
}
break;
} else if (std.mem.eql(u8, state, "timeout") or std.mem.eql(u8, state, "cancelled")) {
std.debug.print("Job {s}\n", .{state});
break;
}
std.time.sleep(1 * std.time.ns_per_s);
}
}
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
}
}
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