Kubernetes MCP

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A Kubernetes-focused Model Context Protocol (MCP) server built in Go. It exposes Kubernetes operations as MCP tools and supports stdio, sse, and streamable transports.

Why This Project

• Unified MCP interface for Kubernetes operations
• Works with both local kubeconfig and in-cluster configuration
• Multiple transports for different integration modes
• Generic resource CRUD + utility tools + prompts + metrics
• slog-based logging with configurable level/format

Requirements

• Go 1.24+
• Access to a Kubernetes cluster
  • via --kubeconfig, or
  • via in-cluster service account

Quick Start

Build

git clone https://github.com/HSn0918/kubernetes-mcp.git
cd kubernetes-mcp
go build -o kubernetes-mcp ./cmd/kubernetes-mcp

Run (stdio)

./kubernetes-mcp server transport stdio --kubeconfig ~/.kube/config

Run (SSE)

./kubernetes-mcp server transport sse \
  --port 8080 \
  --health-port 8081 \
  --allow-origins "*" \
  --base-url "http://localhost:8080" \
  --kubeconfig ~/.kube/config

Run (StreamableHTTP)

./kubernetes-mcp server transport streamable \
  --port 8080 \
  --health-port 8081 \
  --allow-origins "*" \
  --kubeconfig ~/.kube/config

CLI Structure

kubernetes-mcp
├── server
│   └── transport
│       ├── stdio
│       ├── sse
│       └── streamable
└── version

Configuration Flags

Global flags:

• --log-level (debug|info|warn|error, default info)
• --log-format (console|json, default console)
• --kubeconfig (optional)

Network transport flags (sse, streamable):

• --port (default 8080)
• --health-port (default 8081)
• --allow-origins (default *)

SSE-only flags:

• --base-url (default http://localhost:)

Transport Endpoints

• StreamableHTTP MCP endpoint: POST /mcp
• Health endpoints (SSE/Streamable only):
  • GET /healthz
  • GET /readyz

Tooling Overview

1. Generic Resource Operations

For each API group prefix, the server exposes:

• LIST__RESOURCES
• GET__RESOURCE
• DESCRIBE__RESOURCE
• CREATE__RESOURCE
• UPDATE__RESOURCE
• DELETE__RESOURCE

Registered prefixes:

• K8S

2. Core/Cluster Utilities

• LIST_NAMESPACES
• LIST_NODES
• GET_POD_LOGS
• ANALYZE_POD_LOGS

3. Utility Tools

• GET_CURRENT_TIME
• GET_CLUSTER_INFO
• GET_API_RESOURCES
• SEARCH_RESOURCES
• EXPLAIN_RESOURCE
• APPLY_MANIFEST
• VALIDATE_MANIFEST
• DIFF_MANIFEST
• GET_EVENTS

4. Prompt Tools

• KUBERNETES_YAML_PROMPT
• KUBERNETES_QUERY_PROMPT
• TROUBLESHOOT_PODS_PROMPT
• TROUBLESHOOT_NODES_PROMPT
• TROUBLESHOOT_NETWORK_PROMPT

5. Metrics Tools

• GET_NODE_METRICS
• GET_POD_METRICS
• GET_RESOURCE_METRICS
• GET_TOP_CONSUMERS