list_resources

List newrelic-api resources

SERVERNcp SOURCE@portel/ncp

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/io-github-portel-dev-ncp/list-resources.md

WHAT IT DOES

What list_resources does on Ncp

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

RISK

Why list_resources is rated Low

This tool retrieves or queries resource information from the New Relic API with no apparent side effects or capability to modify, delete, or execute operations. It is a straightforward enumeration operation, placing it in the Read category with low severity and high confidence.

From the tool's definition Tool name 'list_resources' and description 'List newrelic-api resources' indicate a data retrieval operation. The verb 'list' is a standard read operation that retrieves information without modifying it.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_resources safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ncp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_resources, this is the rule to start with:

list_resources Allowed

list_resources 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": {
    "list_resources": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ncp, apply this rule, and every list_resources call is checked against it from then on.

FAQ

Questions about list_resources

What does the list_resources tool do? +

List newrelic-api resources. It is categorised as a Read tool in the Ncp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_resources? +

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

What risk level is list_resources? +

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

Can I rate-limit list_resources? +

Yes. Add a rate_limit block to the list_resources 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_resources completely? +

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

list_resources is provided by the Ncp MCP server (@portel/ncp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ncp, and thousands of servers like it.

This server

All 275 Ncp tools →

Across the catalogue

aiva_list_affiliates on AIVA MCP Server →list_agents on 0rca Dojo MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →