list_tags · n8n Workflow Builder MCP Server MCP

WHAT IT DOES

What list_tags does on n8n Workflow Builder MCP Server

AI agents call list_tags to retrieve information from n8n Workflow Builder MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why list_tags needs a policy

This tool retrieves and lists existing tags with pagination, which is a pure read operation. It does not create, modify, delete, execute, or initiate any external actions. No data is altered and there are no irreversible consequences from invoking this tool.

From the tool's definition Tool name 'list_tags' and description 'List all workflow tags with pagination support' indicate a query/retrieval operation with no modification or side effects.

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

POLICY

How to control list_tags

PolicyLayer is an MCP gateway — it sits between your AI agents and n8n Workflow Builder MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_tags:

policy.json

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

list_tags is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register n8n Workflow Builder MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More n8n Workflow Builder MCP Server tools

Destructive delete_credential Delete a credential by ID. This will remove the credential and make it unavailable for wor Destructive delete_execution Delete a workflow execution record from the n8n instance Destructive delete_tag Remove unused tags from the system Destructive delete_workflow Delete an n8n workflow Destructive remove_node Remove a node from a workflow (also removes its connections) Execute execute_workflow Trigger immediate execution of a workflow by its ID. Starts the workflow manually regardle Execute activate_workflow Activate an n8n workflow Execute create_workflow_and_activate Create and activate an n8n workflow

All 34 n8n Workflow Builder MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_tags

What does the list_tags tool do? +

List all workflow tags with pagination support. It is categorised as a Read tool in the n8n Workflow Builder MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_tags? +

Register the n8n Workflow Builder MCP Server MCP server in PolicyLayer and add a rule for list_tags: 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 n8n Workflow Builder MCP Server. Nothing to install.

What risk level is list_tags? +

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

Can I rate-limit list_tags? +

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

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

list_tags is provided by the n8n Workflow Builder MCP Server MCP server (makafeli/n8n-workflow-builder). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every n8n Workflow Builder MCP Server tool call.

Start from n8n Workflow Builder MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

Free to start. No card required.

34 n8n Workflow Builder MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.