commission_with_code

THE RISK

High Risk

Why commission_with_code needs a policy

Commissioning a device involves initiating a pairing/onboarding process that establishes persistent network membership and trust relationships with the Matter fabric. This is an external operation with significant side effects (device joins the network, credentials are exchanged), but it is not purely destructive or financial.

From the tool's definition Commission a new device using QR code or manual pairing code

Documented attack patterns abuse exactly the kind of access commission_with_code gives an agent:

POLICY

How to control commission_with_code

PolicyLayer is an MCP gateway — it sits between your AI agents and Matter, and nothing reaches the server without passing your rules. This is the rule we recommend for commission_with_code:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "commission_with_code": {
      "limits": [
        {
          "counter": "commission_with_code_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

commission_with_code stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Matter — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Matter tools

Execute start_listening Start listening for node events and changes. Execute device_command Send a command to a device. Write set_thread_dataset Set Thread credentials for device commissioning. Write set_wifi_credentials Set WiFi credentials for device commissioning. Write write_attribute Write an attribute value to a node. Read get_cluster_commands get_cluster_commands Read get_cluster_id_from_name Get the cluster Id from a cluster name Read get_cluster_name_from_id Get the cluster name from a cluster Id

All 15 Matter tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in Matter → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about commission_with_code

What does the commission_with_code tool do? +

Commission a new device using QR code or manual pairing code. It is categorised as a Execute tool in the Matter MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on commission_with_code? +

Register the Matter MCP server in PolicyLayer and add a rule for commission_with_code: 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 Matter. Nothing to install.

What risk level is commission_with_code? +

commission_with_code is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit commission_with_code? +

Yes. Add a rate_limit block to the commission_with_code 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 commission_with_code completely? +

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

commission_with_code is provided by the Matter MCP server (mattercoder/matter-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Matter tool call.

Start from Matter, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →