iot_witness_chain

Get witness chain provenance

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

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/hamza-agent-hub-252/iot-witness-chain.md

WHAT IT DOES

What iot_witness_chain does on Hamza Agent Hub 252

AI agents call iot_witness_chain to retrieve information from Hamza Agent Hub 252 without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why iot_witness_chain is rated Low

This tool retrieves provenance information from a witness chain, which is a read-only query operation with no data modification, execution, deletion, or financial implications. The blast radius of misuse is minimal—an agent could only access or over-query chain data.

From the tool's definition Tool name 'iot_witness_chain' with description 'Get witness chain provenance' indicates a retrieval operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs iot_witness_chain 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_witness_chain, this is the rule to start with:

iot_witness_chain Allowed

iot_witness_chain is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "iot_witness_chain": {}
  }
}

ALLOW ONLY 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_witness_chain call is checked against it from then on.

FAQ

Questions about iot_witness_chain

What does the iot_witness_chain tool do? +

Get witness chain provenance. It is categorised as a Read tool in the Hamza Agent Hub 252 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on iot_witness_chain? +

Register the Hamza Agent Hub 252 MCP server in PolicyLayer and add a rule for iot_witness_chain: 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_witness_chain? +

iot_witness_chain is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit iot_witness_chain? +

Yes. Add a rate_limit block to the iot_witness_chain 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_witness_chain completely? +

Set action: deny in the PolicyLayer policy for iot_witness_chain. 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_witness_chain? +

iot_witness_chain 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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