monitor

Monitor aws-ec2-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/monitor.md

WHAT IT DOES

What monitor does on Ncp

AI agents call monitor 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 monitor is rated Low

Monitoring is a read-only operation that retrieves metrics, status, and observability data from AWS EC2 instances without creating, modifying, deleting, or executing changes to infrastructure. The blast radius is low since it only accesses existing data about resources.

From the tool's definition Tool name 'monitor' and description 'Monitor aws-ec2-api resources' indicate observation and querying of AWS EC2 resource status/metrics with no modification capabilities.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs monitor 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 monitor, this is the rule to start with:

monitor Allowed

monitor 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": {
    "monitor": {}
  }
}

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 monitor call is checked against it from then on.

FAQ

Questions about monitor

What does the monitor tool do? +

Monitor aws-ec2-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 monitor? +

Register the Ncp MCP server in PolicyLayer and add a rule for monitor: 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 monitor? +

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

Can I rate-limit monitor? +

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

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

monitor 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.

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