Blueprint: The Manufacturing Predictor

Operational Tool Gating for IoT-Driven Agents

Industrial AI agents used in manufacturing use IoT sensor data to predict machine failures and autonomously adjust production lines. Governance is critical here: an agent should not be able to "shut down" a furnace without proper authorization or specific identity verification.

Roadmap: HITL approval workflows are planned for a future release. Current policies support allow/deny/warn/audit effects only. The deny-based gating shown below enforces operational safety without requiring manual approval steps.

This blueprint demonstrates Context-Aware Operational Gating.

Architecture

1. Master Policy Definition

Define strict operational safety rules for industrial tools.

{
  "name": "industrial-safety-policy",
  "priority": 9500,
  "rules": [
    {
      "id": "require-maintenance-mode",
      "effect": "deny",
      "principals": ["agent:maintenance-bot"],
      "actions": ["iot:shutdown_machine"],
      "resources": ["*"],
      "conditions": {
        "maintenance_mode": "false"
      }
    },
    {
      "id": "allow-iot-read",
      "effect": "allow",
      "principals": ["*"],
      "actions": ["iot:read_sensor"],
      "resources": ["*"]
    }
  ]
}

2. Implementation

Python IoT Prototype

import requests
from openai import OpenAI

client = OpenAI(
    api_key="ignored",
    base_url="http://cz-gateway:8001/v1",
    default_headers={
        "X-ControlZero-Agent-ID": "maintenance-bot",
        "X-ControlZero-Maintenance-Mode": "false" # Dynamic state
    }
)

def handle_sensor_alert(machine_id: str, temperature: float):
    print(f"Alert: Machine {machine_id} at {temperature}C")

    # Policy Enforcement happens at the Gateway
    try:
        response = client.chat.completions.create(
            model="gpt-4o-mini",
            messages=[{"role": "user", "content": f"Machine {machine_id} is overheating. Should I shut it down?"}],
            tools=[{
                "type": "function",
                "function": {
                    "name": "iot:shutdown_machine",
                    "parameters": {"type": "object", "properties": {"machine_id": {"type": "string"}}}
                }
            }]
        )
        return response
    except Exception as e:
        return f"Operational Safety Block: {e}"

# Scenario A: Shutdown attempt while NOT in maintenance mode
print(handle_sensor_alert("furnace-01", 1200.5))
# RESULT: BLOCKED

3. Validation Checklist

• State-Based Gating: Verify that switching X-ControlZero-Maintenance-Mode to true allows the shutdown command to proceed.
• High-Availability Check: Ensure the Control Zero Gateway is deployed in HA mode to prevent governance-induced downtime.
• Audit Compliance: Verify that all industrial tool calls are logged with sensor context for regulatory safety reviews.