# OpenSpec Change: enterprise-server-sandbox

- **Change ID**: enterprise-server-sandbox
- **Package**: `@suaveplan/sandbox`
- **Category**: server/infra
- **Target path**: `server/infra/sandbox`
- **Status**: PROPOSED
- **Date**: 2026-04-24
- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/sandbox.md`

---

## Summary

Deliver `@suaveplan/sandbox` on the genesis branch from scratch at enterprise quality. The package provides an isolated code execution sandbox for running untrusted or user-supplied JavaScript/TypeScript snippets. It supports two backends: a `WorkerSandbox` using Bun's `Worker` API (in-process isolation) and a `ProcessSandbox` using `Bun.spawn` for stronger OS-level isolation. Both expose `run(code, context, options): Promise<SandboxResult>` with configurable resource limits (CPU timeout, memory limit, I/O restrictions), structured output capture, and abort signal support. Genesis adds Zod-validated options, `@suaveplan/error` codes, OTel spans, and comprehensive security-oriented tests.

---

## Current-state audit (genesis)

Does not exist on genesis — fresh build.

---

## Available workspace deps on genesis

| Package | Role |
|---|---|
| `@suaveplan/error` (`workspace:^`) | Typed `SANDBOX.*` error codes |
| `@suaveplan/types` (`workspace:^`) | `LoggerLike` |
| `@suaveplan/logger` (`workspace:^`) | Structured logs |
| `zod` (`catalog:forms`) | Options validation |
| `@opentelemetry/api` (`catalog:observability`) | Spans + counters + histograms |
| `tslib` (`catalog:build`) | Runtime helpers |

---

## Public API surface

```ts
interface Sandbox {
  run(code: string, context?: SandboxContext, options?: RunOptions): Promise<SandboxResult>
  dispose(): Promise<void>
}

function createWorkerSandbox(options?: SandboxOptions): Sandbox
function createProcessSandbox(options?: SandboxOptions): Sandbox

interface SandboxOptions {
  timeoutMs?: number        // default: 5000
  memoryLimitMb?: number    // default: 128
  allowNetwork?: boolean    // default: false
  allowFs?: boolean         // default: false
  logger?: LoggerLike
}

type SandboxContext = Record<string, unknown>   // serializable globals injected into sandbox

interface RunOptions {
  timeoutMs?: number        // override per-run
  signal?: AbortSignal
}

interface SandboxResult {
  ok: boolean
  value?: unknown           // returned value (JSON-serializable)
  stdout: string
  stderr: string
  duration: number
  exitCode?: number
  error?: string
}

type SandboxErrorCode =
  | 'SANDBOX_TIMEOUT'
  | 'SANDBOX_MEMORY_EXCEEDED'
  | 'SANDBOX_EXECUTION_ERROR'
  | 'SANDBOX_INVALID_CODE'
  | 'SANDBOX_DISPOSED'

function registerSandboxErrorCodes(): void
```

---

## File layout

```text
server/infra/sandbox/
  package.json
  tsconfig.json
  vitest.config.ts
  src/
    index.ts
    error-codes.ts
    constants/index.ts
    types/
      sandbox.types.ts
      sandbox.types.md
    worker/
      worker-sandbox/
        worker-sandbox.ts
        worker-sandbox.md
        worker-sandbox.types.ts
        worker-sandbox.test.ts
        index.ts
      sandbox-worker-script.ts   # Worker inner script
    process/
      process-sandbox/
        process-sandbox.ts
        process-sandbox.md
        process-sandbox.types.ts
        process-sandbox.test.ts
        index.ts
  tests/
    security.test.ts
    integration.test.ts
```

---

## Impact

Downstream: user-defined rule engines, server-side template execution, AI tool calls. Server-only, Bun runtime required.

**Prerequisites on Verdaccio**: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/logger`.