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Kubernetes Read Only MCP Server

@your-ko

Repository

Basic information

Category

Cloud & Infrastructure

License

MIT

Transports

stdio

Author

your-ko

Submitted by

yourik

About Kubernetes Read Only MCP Server

K8s read-only MCP server

#k8s#kubernetes#golang#ai#mcp#mcp-server

Kubernetes Read Only MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "k8s": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "-v",
        "${HOME}/.kube:/root/.kube:ro",
        "ghcr.io/your-ko/mcp-k8s-ro:latest"
      ]
    }
  }
}

Kubernetes Read Only MCP Server tools

7

List any resource type by name — pods, deployments, CRDs, etc. Accepts optional namespace filter. Returns name, status, readiness, restarts, node, IP, and more depending on resource kind.

Return the full YAML of a single resource. Secret data is masked.

List all available resource types via the discovery API. Accepts optional API group filter.

Fetch pod logs. Supports container selector, tail lines, and `--previous` for crashed containers.

List Kubernetes events for a namespace or the whole cluster, sorted by most recent.

CPU and memory usage per pod, with per-container breakdown. Requires metrics-server.

CPU and memory usage per node, with percentage of allocatable capacity. Requires metrics-server.

Overview

What is Kubernetes Read Only MCP Server?

A read-only MCP server that gives Claude access to Kubernetes clusters. Built in Go, it communicates over stdio using the MCP protocol and is designed for safe, production‑grade debugging.

How to use Kubernetes Read Only MCP Server?

Build the binary with make build or pull the Docker image from ghcr.io/your-ko/mcp-k8s-ro. Add it as a stdio MCP server in your Claude Desktop or CLI configuration, pointing to a kubeconfig file via the KUBECONFIG environment variable.

Key features of Kubernetes Read Only MCP Server

  • Read‑only operations: get, describe, logs, top only – no mutations.
  • Secret values are masked before being sent to the model.
  • Token‑efficient responses include only relevant fields, not raw API objects.
  • Every response includes the active context and cluster name.
  • Locks to the active kubeconfig context at startup; no runtime context switching.
  • Runs as a local binary or Docker container with no extra infrastructure.

Use cases of Kubernetes Read Only MCP Server

  • Safe on‑call debugging: Claude can inspect workloads without risking accidental mutations.
  • Quickly list and describe resources (pods, deployments, CRDs) across namespaces.
  • Fetch pod logs, including crashed container logs with --previous.
  • View Kubernetes events sorted by most recent.
  • Monitor CPU and memory usage per pod or node (requires metrics‑server).

Frequently asked questions

1

Is the server truly read‑only?

Yes – all tools are restricted to `get`, `describe`, `logs`, and `top` operations. If a mutating action is needed, the server prints the equivalent `kubectl` command for manual execution.

2

Are my secrets safe?

Secret values (`data`, `stringData`) are masked before being sent to the model, preventing leaks from misconfiguration or prompt injection.

3

Can I switch clusters at runtime?

No – the server locks to the active kubeconfig context at startup. To target a different cluster, stop the server, switch context, and restart.

4

How do I work with multiple clusters?

Register a separate server instance per cluster in your MCP configuration. Each instance sees only its own cluster and Claude addresses them by name.

5

What are the runtime dependencies?

A valid kubeconfig file (default `~/.kube/config`). The `k8s_top_pods` and `k8s_top_nodes` tools additionally require the metrics‑server to be installed in the cluster.

Comments

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