# API Domain

Futures REST APIs support the following environments:

| Environment | REST API Domain | Description |
|-------------|-----------------|-------------|
| Production | https://api-contract.weex.com | Live trading |
| Simulation | https://api-sim.weex.com | Simulated trading |

All Futures REST APIs support simulation. Replace the production domain with `https://api-sim.weex.com`; paths, request parameters, and signing rules remain the same.