set-flows-state · Node Red MCP: Risk & Policy

WHAT IT DOES

What set-flows-state does on Node Red

AI agents use set-flows-state to create or update resources in Node Red — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Node Red environment.

WHY IT NEEDS A POLICY

Why set-flows-state needs a policy

Based on the tool name, 'set-flows-state' likely modifies the running/stopped state of Node-RED flows (enabling or disabling them). This is a Write-level operation with high severity because toggling flow states could disrupt running automation pipelines or services. Confidence is reduced due to the empty description.

From the tool's definition Tool name 'set-flows-state' — description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set-flows-state Rate-limited

set-flows-state 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": {
    "set-flows-state": {
      "limits": [
        {
          "counter": "set-flows-state_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Node Red, so you can run agents against it safely.

FAQ

Questions about set-flows-state

What does the set-flows-state tool do? +

set-flows-state. It is categorised as a Write tool in the Node Red MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set-flows-state? +

Register the Node Red MCP server in PolicyLayer and add a rule for set-flows-state: 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 Node Red. Nothing to install.

What risk level is set-flows-state? +

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

Can I rate-limit set-flows-state? +

Yes. Add a rate_limit block to the set-flows-state 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 set-flows-state completely? +

Set action: deny in the PolicyLayer policy for set-flows-state. 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 set-flows-state? +

set-flows-state is provided by the Node Red MCP server (node-red-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.