k8s_create_configmap · Kubernetes MCP Server MCP

WHAT IT DOES

What k8s_create_configmap does on Kubernetes MCP Server

AI agents use k8s_create_configmap to create or update resources in Kubernetes MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Kubernetes MCP Server environment.

WHY IT NEEDS A POLICY

Why k8s_create_configmap needs a policy

This tool creates a new Kubernetes ConfigMap resource, which is a reversible write operation. ConfigMaps store configuration data that can be used by pods and other resources. While creation itself is non-destructive and can be undone (deleted), misuse could inject malicious configurations affecting multiple workloads in the cluster.

From the tool's definition Tool name is 'k8s_create_configmap' and description states 'Create a ConfigMap from literal values'. The verb 'Create' indicates a write operation that adds new configuration data to the cluster.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

k8s_create_configmap Rate-limited

k8s_create_configmap 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": {
    "k8s_create_configmap": {
      "limits": [
        {
          "counter": "k8s_create_configmap_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 Kubernetes MCP Server, so you can run agents against it safely.

FAQ

Questions about k8s_create_configmap

What does the k8s_create_configmap tool do? +

Create a ConfigMap from literal values. It is categorised as a Write tool in the Kubernetes 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 k8s_create_configmap? +

Register the Kubernetes MCP Server MCP server in PolicyLayer and add a rule for k8s_create_configmap: 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 Kubernetes MCP Server. Nothing to install.

What risk level is k8s_create_configmap? +

k8s_create_configmap is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit k8s_create_configmap? +

Yes. Add a rate_limit block to the k8s_create_configmap 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 k8s_create_configmap completely? +

Set action: deny in the PolicyLayer policy for k8s_create_configmap. 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 k8s_create_configmap? +

k8s_create_configmap is provided by the Kubernetes MCP Server MCP server (mjrestivo16/mcp-kubernetes). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.