Add the Prometheus MCP server to Claude Code

Config last verified Jun 1, 2026

The exact config to run Prometheus in Claude Code — paste it in, restart, and the tools load.

Prerequisites

Claude Code installed.
PROMETHEUS_URL — Base URL of your Prometheus-compatible HTTP API, e.g. http://localhost:9090.

Setup

1. Open `~/.claude.json`

2. Add this configuration

Add to ~/.claude.json

~/.claude.json

json

{
  "mcpServers": {
    "prometheus": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "PROMETHEUS_URL",
        "ghcr.io/pab1it0/prometheus-mcp-server:latest"
      ],
      "env": {
        "PROMETHEUS_URL": "<PROMETHEUS_URL>",
        "PROMETHEUS_USERNAME": "<PROMETHEUS_USERNAME>",
        "PROMETHEUS_PASSWORD": "<PROMETHEUS_PASSWORD>",
        "PROMETHEUS_TOKEN": "<PROMETHEUS_TOKEN>",
        "ORG_ID": "<ORG_ID>"
      }
    }
  }
}

Or via CLI

bash

claude mcp add prometheus -- docker run -i --rm -e PROMETHEUS_URL ghcr.io/pab1it0/prometheus-mcp-server:latest

3. Restart Claude Code and confirm the Prometheus tools load.

Gotchas

Claude Code stores MCP servers under an "mcpServers" object in ~/.claude.json. It also reads a project-scoped .mcp.json and supports adding servers from the command line with "claude mcp add". Each entry must declare either a "type" or a "command"; Claude Code refuses an entry that has neither. Remote servers connect natively over Streamable HTTP with OAuth.

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