webhooks_create

Create a webhook subscription.

SERVERMunin SOURCEhttps://mcp.getmunin.com/mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/com-getmunin-munin/webhooks-create.md

WHAT IT DOES

What webhooks_create does on Munin

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

RISK

Why webhooks_create is rated Medium

This tool creates a new webhook subscription, which is a reversible write operation that modifies platform configuration. The severity is medium because misconfigured webhooks could expose sensitive data to unintended recipients or trigger unwanted external notifications, but the operation itself is not destructive or financial.

From the tool's definition Tool name is 'webhooks_create' and description states 'Create a webhook subscription.' The word 'Create' indicates a write operation that adds new configuration data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs webhooks_create safely

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

webhooks_create Rate-limited

webhooks_create 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "webhooks_create": {
      "limits": [
        {
          "counter": "webhooks_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about webhooks_create

What does the webhooks_create tool do? +

Create a webhook subscription. It is categorised as a Write tool in the Munin MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on webhooks_create? +

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

What risk level is webhooks_create? +

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

Can I rate-limit webhooks_create? +

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

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

webhooks_create is provided by the Munin MCP server (https://mcp.getmunin.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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