rotate_webhook_key · API-Central MCP: Risk & Policy

WHAT IT DOES

What rotate_webhook_key does on API-Central

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

WHY IT NEEDS A POLICY

Why rotate_webhook_key needs a policy

Rotating an HMAC key modifies the webhook's authentication credentials. This is a Write operation (it updates/replaces existing data), but it has high severity because rotating the key invalidates the existing key, potentially breaking all webhook consumers that rely on the old secret until they are updated. It could disrupt integrations or allow an attacker to intercept webhook payloads if misused.

From the tool's definition Rotate the HMAC key for a webhook

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rotate_webhook_key Rate-limited

rotate_webhook_key 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": {
    "rotate_webhook_key": {
      "limits": [
        {
          "counter": "rotate_webhook_key_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 API-Central, so you can run agents against it safely.

FAQ

Questions about rotate_webhook_key

What does the rotate_webhook_key tool do? +

Rotate the HMAC key for a webhook. It is categorised as a Write tool in the API-Central MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rotate_webhook_key? +

Register the API-Central MCP server in PolicyLayer and add a rule for rotate_webhook_key: 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 API-Central. Nothing to install.

What risk level is rotate_webhook_key? +

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

Can I rate-limit rotate_webhook_key? +

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

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

rotate_webhook_key is provided by the API-Central MCP server (secure-ssid/centralmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.