Alertmanager

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

1. Alert Retrieval: Fetches and formats current alerts from Alertmanager with optional filtering capabilities.

2. Alert Details: Provides detailed information about specific alerts when referenced by their fingerprint.

3. Silence Management: Offers tools to create, list, and delete silences that suppress notifications for specific alerts.

4. 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

1. 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": {}
    }
  }
}

2. Restart Claude for Desktop to load the new configuration.

3. 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

Resources

• Model Context Protocol Documentation
• Prometheus Alertmanager Documentation
• Alertmanager API Reference
• MCP TypeScript SDK
• Claude AI Documentation