webhook_create · Voog MCP: Risk & Policy

WHAT IT DOES

What webhook_create does on Voog

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

WHY IT NEEDS A POLICY

Why webhook_create needs a policy

Webhooks are configuration objects that route events to external endpoints. Creating one modifies the CMS system state reversibly—webhooks can be deleted or modified later. This is a Write operation, not Execute, because the tool itself doesn't trigger external calls; it only registers the webhook definition.

From the tool's definition Tool name 'webhook_create' and description 'Create a webhook (POST /webhooks)' indicate data creation via HTTP POST.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

webhook_create Rate-limited

webhook_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": {
    "webhook_create": {
      "limits": [
        {
          "counter": "webhook_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Voog, so you can run agents against it safely.

FAQ

Questions about webhook_create

What does the webhook_create tool do? +

Create a webhook (POST /webhooks). Body is FLAT — no. It is categorised as a Write tool in the Voog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on webhook_create? +

Register the Voog MCP server in PolicyLayer and add a rule for webhook_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 Voog. Nothing to install.

What risk level is webhook_create? +

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

Can I rate-limit webhook_create? +

Yes. Add a rate_limit block to the webhook_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 webhook_create completely? +

Set action: deny in the PolicyLayer policy for webhook_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 webhook_create? +

webhook_create is provided by the Voog MCP server (runnel/voog-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.