Prometheus MCP Server (Go)

A Model Context Protocol (MCP) server for Prometheus integration. Native Go binary with built-in Kubernetes connectivity via client-go.

Installation

npx

Terminal

npx -y mcp-prometheus@latest

MCP Client Configuration

Add to your MCP client configuration (VS Code, Cursor, Windsurf, etc.):

config.json

{
  "mcpServers": {
    "prometheus": {
      "command": "npx",
      "args": ["-y", "mcp-prometheus@latest"],
      "env": {
        "PROMETHEUS_URL": "http://localhost:9090"
      }
    }
  }
}

VS Code

shell

code --add-mcp '{"name":"prometheus","command":"npx","args":["-y","mcp-prometheus@latest"],"env":{"PROMETHEUS_URL":"http://localhost:9090"}}'

Kubernetes Auto-Connect

Automatically connects to Prometheus running in OpenShift/Kubernetes via the K8S API service proxy. Uses native kubeconfig/in-cluster config via client-go. No kubectl or port-forwarding required.

Default: openshift-monitoring/prometheus-operated:9090

config.json

{
  "mcpServers": {
    "prometheus": {
      "command": "npx",
      "args": ["-y", "mcp-prometheus@latest"]
    }
  }
}

Binary

Download from GitHub Releases or build from source:

bash

make build
./mcp-prometheus

Configuration

Environment Variables

Variable	Description
`PROMETHEUS_URL`	Direct Prometheus API URL (overrides K8S auto-connect)

CLI Flags

Flag	Description	Default
`--url`	Direct Prometheus URL	-
`--namespace`	Kubernetes namespace	`openshift-monitoring`
`--service`	Kubernetes service name	`prometheus-operated`
`--service-port`	Kubernetes service port	`9090`
`--service-scheme`	Service scheme (http/https)	`https`
`--kubeconfig`	Path to kubeconfig file	auto-detect

Precedence: --url / PROMETHEUS_URL > K8S auto-connect

Connection strategy:

Direct URL (if --url or PROMETHEUS_URL is set)
K8S API proxy (auto-detect kubeconfig or in-cluster config)

Tools (11)

Basic Queries

Tool	Description
`query`	Execute a PromQL instant query
`queryRange`	Execute a PromQL range query over time
`getTargets`	Get scrape targets status
`getRules`	Get alerting and recording rules
`getPrometheusStatus`	Get server version and runtime info

Cluster Diagnostics

Tool	Description
`getClusterHealthOverview`	Comprehensive cluster health overview
`diagnoseNode`	Diagnose a specific node's health
`diagnoseNamespace`	Diagnose a namespace's health

Resource Analysis

Tool	Description
`getTopResourceConsumers`	Top CPU/memory/network consumers
`investigatePod`	Deep investigation of a specific pod
`compareTimeRanges`	Compare metrics between two time periods

Example Prompts

Code

"What's the current CPU usage across all nodes?"
"Show me the cluster health overview"
"Which pods are using the most memory?"
"Diagnose node worker-1"
"Are all scrape targets healthy?"
"Compare CPU usage now vs 24 hours ago"
"Investigate pod my-app in namespace production"
"What alerting rules are defined?"

Development

Build

bash

make build              # Build for current platform
make build-all-platforms # Cross-compile for all platforms

Container

bash

podman build -f Containerfile -t mcp-prometheus .

Kubernetes / OpenShift Deployment

Container Image

The container image is available on GitHub Container Registry:

Code

ghcr.io/jeanlopezxyz/mcp-prometheus:latest

Helm Chart

Deploy using the included Helm chart:

bash

# Add the chart repository (or use local chart)
helm upgrade --install mcp-prometheus ./charts/mcp-prometheus \
  --namespace mcp-servers \
  --create-namespace \
  --set openshift=true

Helm Values

Parameter	Description	Default
`image.registry`	Container registry	`ghcr.io`
`image.repository`	Image repository	`jeanlopezxyz/mcp-prometheus`
`image.version`	Image tag	`latest`
`openshift`	Enable OpenShift Routes	`false`
`service.port`	Service port	`8080`
`prometheus.namespace`	Prometheus namespace	`openshift-monitoring`
`prometheus.service`	Prometheus service name	`prometheus-operated`
`rbac.useClusterReader`	Use cluster-reader role	`true`

Example with custom Prometheus

bash

helm upgrade --install mcp-prometheus ./charts/mcp-prometheus \
  --namespace mcp-servers \
  --set openshift=true \
  --set prometheus.url=http://prometheus.monitoring:9090

License

MIT