Sandbox infrastructure, unified

One interface.
Every sandbox.

Connect the providers you trust. Give your agents one stable interface for secure code execution, previews, and ephemeral environments.

Start building Connect an agent
Provider failoverScoped credentialsAgent native
POST /api/v1/sandboxes 
Authorization: Bearer arena_key_••••
Content-Type: application/json

{
  "provider": "auto",
  "image": "python:3.13-slim",
  "timeout_seconds": 300,
  "metadata": {
    "purpose": "agent-code-exec"
  }
}
201 CREATED
{
  "id": "sbx_4xN7pQ2...",
  "status": "running",
  "provider": "docker",
  "expires_at": "2026-07-19T12:00:00Z"
}
routed in 84 ms

39 researched providers, one capability model

◇ Docker R Runloop T Tensorlake E E2B Explore every provider →
Built for the provider race

Your sandbox layer should get better as providers compete.

Keep application code stable while routing each workload to the right balance of price, isolation, region, and reliability.

01
↗

Routing without lock-in

Select a provider explicitly or let ArenAPI route by priority and fall through on failure.

02
⌘

Two interfaces, one capability set

Every operation is available through the documented interface and agent tool server.

03
◎

Control in one place

Credentials, time limits, lifecycle, files, execution, and archives share one audit trail.

For agents

Designed to be discovered, understood, and operated by software.

Machine-readable contracts, scoped registration, deterministic tool schemas, and useful errors give agents enough context to recover without human glue code.

  • 01 Discover authentication from any unauthorized response
  • 02 Register and claim access through auth.md
  • 03 Manage providers and sandboxes with the same semantics
Simple platform pricing

Pay for the control plane. Bring your provider spend.

Hobby

$29 / month

For prototypes and independent builders.

  • One provider
  • 1,000 managed sandbox-hours
  • Community support
  • $0.02 per managed hour above the allowance
See billing details
Most popular

Team

$149 / month

For teams shipping agent and preview workloads.

  • Ten providers
  • 10,000 managed sandbox-hours
  • Automatic failover
  • $0.02 per managed hour above the allowance
See billing details

Scale

$599 / month

For high-volume, reliability-sensitive systems.

  • Unlimited provider connections
  • 50,000 managed sandbox-hours
  • Priority support
  • $0.02 per managed hour above the allowance
See billing details
ArenAPI

Build on sandboxes.
Not on a provider.

Read the documentation