planka_update_webhook · Planka MCP Server for Claude MCP

WHAT IT DOES

What planka_update_webhook does on Planka MCP Server for Claude

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

WHY IT NEEDS A POLICY

Why planka_update_webhook needs a policy

Updating a webhook is a reversible Write operation—it modifies an existing configuration without permanently deleting it or causing irreversible harm. However, webhooks can potentially be reconfigured to exfiltrate data or trigger unintended external actions, elevating severity to medium. The tool itself is Write-class, not Execute, because it modifies metadata rather than triggering the webhook's execution.

From the tool's definition Tool name 'planka_update_webhook' and description 'Update a webhook' indicate modification of an existing webhook configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

planka_update_webhook Rate-limited

planka_update_webhook 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": {
    "planka_update_webhook": {
      "limits": [
        {
          "counter": "planka_update_webhook_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 Planka MCP Server for Claude, so you can run agents against it safely.

FAQ

Questions about planka_update_webhook

What does the planka_update_webhook tool do? +

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

How do I enforce a policy on planka_update_webhook? +

Register the Planka MCP Server for Claude MCP server in PolicyLayer and add a rule for planka_update_webhook: 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 Planka MCP Server for Claude. Nothing to install.

What risk level is planka_update_webhook? +

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

Can I rate-limit planka_update_webhook? +

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

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

planka_update_webhook is provided by the Planka MCP Server for Claude MCP server (nextheberg/planka-mcp-server-for-claude). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.