Medium Risk

create_notification_channel

Create a new notification channel for monitor alerts

How to control create_notification_channel ↓

What create_notification_channel does on Linode MCP Server

AI agents use create_notification_channel to create or update resources in Linode MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Linode MCP Server environment.

Medium Risk

Why create_notification_channel needs a policy

This tool creates a new notification channel, which is a reversible write operation. It establishes a new configuration object in Linode's monitoring system that can be updated or deleted. The severity is medium because misconfiguration could cause unwanted alert routing or integration with unauthorized endpoints, but the effect is limited to notification delivery configuration rather than compute resources or data.

From the tool's definition Tool name 'create_notification_channel' explicitly indicates creation of a new resource. Description confirms it creates 'a new notification channel' for monitoring alerts.

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

How to control create_notification_channel

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

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_notification_channel": {
      "limits": [
        {
          "counter": "create_notification_channel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_notification_channel 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.

  1. Create a free account and register Linode MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about create_notification_channel

What does the create_notification_channel tool do? +

Create a new notification channel for monitor alerts. It is categorised as a Write tool in the Linode MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_notification_channel? +

Register the Linode MCP Server MCP server in PolicyLayer and add a rule for create_notification_channel: 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 Linode MCP Server. Nothing to install.

What risk level is create_notification_channel? +

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

Can I rate-limit create_notification_channel? +

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

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

create_notification_channel is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Linode MCP Server tool call.

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

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416 Linode MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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