Prometheus Alertmanager MCP Server

This project implements a Model Context Protocol (MCP) server that integrates with Prometheus Alertmanager. It serves as a bridge between Claude AI and Alertmanager, allowing Claude to interact with and manage alerts through a standardized interface.

Core Features

Alert Retrieval: Fetches and formats current alerts from Alertmanager with optional filtering capabilities.
Alert Details: Provides detailed information about specific alerts when referenced by their fingerprint.
Silence Management: Offers tools to create, list, and delete silences that suppress notifications for specific alerts.
Alert Grouping: Retrieves alert groups as organized by Alertmanager.

Technical Implementation

Built using TypeScript and the MCP SDK
Communicates with Alertmanager's HTTP API (v2)
Runs as a stdio-based process compatible with Claude for Desktop
Implements proper error handling and timeout management
Provides strongly-typed interfaces for alert and silence data

Installation

Prerequisites

Access to a running Prometheus Alertmanager instance
For Claude for Desktop: Node.js (v18 or newer) installed on your system

Setup

The package is available on npm and can be used directly with npx:

npx alertmanager-mcp

For global installation:

npm install -g alertmanager-mcp
alertmanager-mcp

Usage with Claude for Desktop

Configure Claude for Desktop to use the MCP server by editing the configuration file:

{
  "mcpServers": {
    "alertmanager": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "--network=host",
        "-e", "ALERTMANAGER_URL=http://your-alertmanager-url:9093",
        "ghcr.io/kaznak/alertmanager-mcp:latest"
      ],
      "env": {}
    }
  }
}

Restart Claude for Desktop to load the new configuration.
You can now ask Claude to interact with Alertmanager using natural language:
- "Show me current alerts"
- "Filter alerts related to CPU issues"
- "Get details for this alert"
- "Create a silence for this alert for the next 2 hours"

Available Tools

get-alerts

Retrieves a list of alerts with optional filtering.

Parameters:

filter: (optional) Filtering query (e.g., alertname=~'.*CPU.*')
silenced: (optional) Include silenced alerts
inhibited: (optional) Include inhibited alerts
active: (optional) Include active alerts (default: true)

get-alert-details

Gets detailed information about a specific alert.

Parameters:

fingerprint: Alert fingerprint

create-silence

Creates a silence for alerts matching specified criteria.

Parameters:

matchers: List of matchers for alerts
startsAt: (optional) Silence start time (ISO8601 format, default is current time)
endsAt: Silence end time (ISO8601 format)
createdBy: Username who created the silence
comment: Reason or explanation for the silence

get-silences

Retrieves a list of silences with optional filtering.

Parameters:

filter: (optional) Filtering query (e.g., createdBy=~'.*admin.*')

delete-silence

Deletes a silence by ID.

Parameters:

silenceId: ID of the silence to delete

get-alert-groups

Gets alert groups with optional filtering.

Parameters:

active: (optional) Include active alerts (default: true)
silenced: (optional) Include silenced alerts
inhibited: (optional) Include inhibited alerts

Extending the Server

This MCP server can be extended with additional features such as:

Alert trend analysis
Automatic response suggestions
Integration with incident management systems
Custom dashboards for specific alert types

Prometheus Alertmanager MCP Server