# 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 cloud infrastructure simulation by one or more hybrid steps, blending rules-based and ML-driven decisions to model AWS, GCP, Azure, OCI, or DigitalOcean environments without provisioning real resources.

## Facts

- Endpoint: POST https://www.cloudworldmodel.ai/api/simulations/%7BsimulationId%7D/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-ef1c9b8d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aBNhjA2U7tK8DPycnEEq5

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-ef1c9b8d -d '<json body>'
```

Example prompt: Advance my cloud simulation (ID sim-abc123) by 5 hybrid steps and show me the resulting CPU usage, latency P95, and cost per hour.

## When to prefer this

Choose this endpoint when you need to advance a cloud infrastructure simulation using a hybrid rules-and-ML engine and want granular per-step metrics (CPU, latency, cost, error rate) without provisioning real cloud resources. Prefer this over the pure RL batch endpoint when you want the hybrid decision mode (blended vs fallback) and ML confidence scoring. Use it over manual provisioning when cost, safety, or learning context requires a risk-free sandbox.

## Known failure modes

- Invalid or unknown simulationId returns a 404 not found error
- Steps value exceeding 500 or below 1 returns a 400 validation error
- Missing or malformed config overrides may cause a 400 bad request
- Payment failure via x402 protocol returns 402 Payment Required, blocking execution
- Simulation in a terminal or errored state may return an error indicating it cannot be stepped further
- ML confidence unusually low may indicate a fallback-only run with degraded hybrid fidelity

## How this service works

Simulate AWS, GCP, Azure, OCI, and DigitalOcean cloud infrastructure without provisioning real resources. Built for Canvas Cloud AI learners and agents.

## Output

Returns a JSON object containing: a list of simulation events, performance metrics (CPU usage %, error rate, P95 latency in ms, cost per hour), updated simulation state (ID and current time), a hybrid result summary (total steps run, blended vs fallback steps, ML confidence average, bottlenecks detected, decisions list), and the hybrid decision mode (rules or ML) with confidence score.

## 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
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "events": [],
  "metrics": {
   "cpuUsage": 42.5,
   "errorRate": 0.01,
   "latencyP95": 120,
   "costPerHour": 0.18
  },
  "simulation": {
   "id": "sim-id",
   "currentTime": 1
  },
  "hybridResult": {
   "summary": {
    "totalSteps": 1,
    "blendedSteps": 0,
    "fallbackSteps": 0,
    "eventsDetected": 0,
    "mlConfidenceAvg": 0.9,
    "bottlenecksDetected": 0
   },
   "decisions": [],
   "simulationId": "sim-id"
  },
  "hybridDecision": {
   "mode": "rules",
   "confidence": 0.9
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cloud-world-model-hybrid-simulation-step-ef1c9b8d/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)