Railway Sandboxes with ComputeSDK

Self-host sandbox environments on Railway's infrastructure through ComputeSDK's unified API. Railway provides instant deployments with automatic SSL — ideal for self-hosted sandbox environments, persistent services, and containerized development.

Prerequisites

Before using Railway as a provider, deploy the ComputeSDK sandbox template to your Railway account (one-time setup):

This deploys a lightweight binary that converts Railway into a sandbox provider.

Setup

npm install computesdk

# .env
COMPUTESDK_API_KEY=your_computesdk_api_key
RAILWAY_API_KEY=your_railway_api_key
RAILWAY_PROJECT_ID=your_railway_project_id
RAILWAY_ENVIRONMENT_ID=your_railway_environment_id

Get your ComputeSDK key at https://console.computesdk.com/register

Getting Railway Credentials

API Token: Railway workspace settings -> Tokens -> New Token
Project ID: Project -> Settings -> Project Info
Environment ID: Found in the URL: railway.com/project/{PROJECT_ID}/settings?environmentId=={ENVIRONMENT_ID}

Quick Start

import { compute } from 'computesdk';
// Auto-detects Railway from environment variables

const sandbox = await compute.sandbox.create();
console.log(`Sandbox: ${sandbox.sandboxId}`);

const result = await sandbox.runCode('print("Hello from Railway!")');
console.log(result.output);

await sandbox.destroy();

Explicit Configuration

For multi-provider setups or when you want to be explicit:

import { compute } from 'computesdk';

compute.setConfig({
  computesdkApiKey: process.env.COMPUTESDK_API_KEY,
  provider: 'railway',
  railway: {
    apiToken: process.env.RAILWAY_API_KEY,
    projectId: process.env.RAILWAY_PROJECT_ID,
    environmentId: process.env.RAILWAY_ENVIRONMENT_ID,
  }
});

const sandbox = await compute.sandbox.create();

Railway Configuration Options

interface RailwayConfig {
  apiToken?: string;        // Uses RAILWAY_API_KEY env var if not set
  projectId?: string;       // Uses RAILWAY_PROJECT_ID env var if not set
  environmentId?: string;   // Uses RAILWAY_ENVIRONMENT_ID env var if not set
}

Full API

ComputeSDK provides the same API across all providers: filesystem operations, shell commands, managed servers, overlays, terminals, and client access.

Install the main skill for the complete reference:

npx skills add https://github.com/computesdk/sandbox-skills --skill computesdk

Or see https://www.computesdk.com/docs/reference/sandbox/

railway-sandbox