iot_fleet_add_device

Add a registered device to a fleet

SERVERHamza Agent Hub 252 SOURCEhamzachallenge3-dev/hamza-agent-hub-252

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/hamza-agent-hub-252/iot-fleet-add-device.md

WHAT IT DOES

What iot_fleet_add_device does on Hamza Agent Hub 252

AI agents use iot_fleet_add_device to create or update resources in Hamza Agent Hub 252, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hamza Agent Hub 252 environment.

RISK

Why iot_fleet_add_device is rated Medium

The tool creates or modifies fleet configuration by adding a device association, which is reversible (device can be removed). This is a Write operation rather than Execute because it modifies state declaratively rather than triggering autonomous actions.

From the tool's definition Tool name 'iot_fleet_add_device' and description 'Add a registered device to a fleet' indicate creation/modification of fleet membership state. This is a reversible write operation that modifies IoT fleet configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs iot_fleet_add_device safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Hamza Agent Hub 252, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For iot_fleet_add_device, this is the rule to start with:

iot_fleet_add_device Rate-limited

iot_fleet_add_device stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "iot_fleet_add_device": {
      "limits": [
        {
          "counter": "iot_fleet_add_device_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hamza Agent Hub 252, apply this rule, and every iot_fleet_add_device call is checked against it from then on.

FAQ

Questions about iot_fleet_add_device

What does the iot_fleet_add_device tool do? +

Add a registered device to a fleet. It is categorised as a Write tool in the Hamza Agent Hub 252 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on iot_fleet_add_device? +

Register the Hamza Agent Hub 252 MCP server in PolicyLayer and add a rule for iot_fleet_add_device: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hamza Agent Hub 252. Nothing to install.

What risk level is iot_fleet_add_device? +

iot_fleet_add_device is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit iot_fleet_add_device? +

Yes. Add a rate_limit block to the iot_fleet_add_device rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block iot_fleet_add_device completely? +

Set action: deny in the PolicyLayer policy for iot_fleet_add_device. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides iot_fleet_add_device? +

iot_fleet_add_device is provided by the Hamza Agent Hub 252 MCP server (hamzachallenge3-dev/hamza-agent-hub-252). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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