# Cloud World Model Hybrid Simulation Step

> Cloud World Model Hybrid Simulation Step is a paid API for AI agents from www.cloudworldmodel.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Advances a specific cloud simulation by one or more timesteps using the hybrid engine, with optional config overrides.

## Facts

- Endpoint: POST https://www.cloudworldmodel.ai/api/simulations/31e0d67a-a6e9-499c-a015-214d53f25bfe/step-hybrid
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cloud-world-model-hybrid-simulation-step-5559b0b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Usrh3mohSgnz26kuCzbMt

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cloud-world-model-hybrid-simulation-step-5559b0b6 -d '<json body>'
```

Example prompt: Advance my cloud world model simulation (ID 4aabfbc1-fbb9-48cc-a44c-99f123c7f82a) forward by 5 hybrid timesteps using the default hybrid engine config.

## When to prefer this

Use this endpoint when you need to advance a specific cloud simulation using the hybrid engine, especially when you want fine-grained control over the number of timesteps (1–500) or need to inject custom hybrid engine configuration overrides. Prefer this over the RL training step endpoint when the simulation is not a standard RL environment but a hybrid cloud world model.

## Known failure modes

- Invalid simulation ID returns 404 not found
- Steps value out of range (less than 1 or greater than 500) returns 400 bad request
- Invalid or malformed config overrides return 400 bad request
- Expired or missing payment/auth token returns 402 payment required
- Simulation already terminated or in error state may return 409 or 500

## How this service works

Advance a cloud simulation with hybrid ML/rules stepping to evaluate autoscaling and configured resilience behavior.

## Output

Returns the updated simulation state after the specified number of hybrid timesteps have been executed, reflecting changes produced by the hybrid engine.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "steps": {
   "type": "integer",
   "maximum": 500,
   "minimum": 1,
   "description": "Number of hybrid steps to run (default 1)"
  },
  "config": {
   "type": "object",
   "description": "Optional hybrid engine config overrides",
   "additionalProperties": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cloud-world-model-hybrid-simulation-step-5559b0b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.cloudworldmodel.ai](https://www.zero.xyz/host/www.cloudworldmodel.ai/llms.txt)