get-flows · Node Red MCP: Risk & Policy

WHAT IT DOES

What get-flows does on Node Red

AI agents call get-flows to retrieve information from Node Red without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why get-flows needs a policy

This tool retrieves flow data from Node-RED without modification. The 'get-' prefix is a standard convention for read-only operations. Even though the description is empty, the context of sibling tools and naming patterns indicate this is a simple data retrieval operation with minimal risk if misused by an AI agent.

From the tool's definition Tool name 'get-flows' indicates data retrieval. Sibling tools show a clear pattern where 'get-*' tools are read operations (get-diagnostics, get-flow, get-flows-formatted, get-flows-state, get-node-info, get-nodes), while 'create-*' and 'delete-*' are…

Attacks that exploit this kind of access

Questions about get-flows

What does the get-flows tool do? +

get-flows. It is categorised as a Read tool in the Node Red MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get-flows? +

Register the Node Red MCP server in PolicyLayer and add a rule for get-flows: 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 get-flows? +

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

Can I rate-limit get-flows? +

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

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

get-flows 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.