Summary

Silence the noisy alert while you are still talking about it.

Triage is mostly two questions: what is firing, and has someone already silenced it. Both are one call here, and writing the silence with its matchers and duration is a third.

What it is

An MCP server for Prometheus Alertmanager. It exposes alert listing and the whole silence lifecycle — create, read, list, expire — as tools.

What you get

Alerts listed, filtered by label matchers, state or receiver
Silences listed, filtered by label matchers
A single silence fetched by ID
A silence created with matchers, author, comment and duration
A silence expired by ID

Requirements

The URL of your Alertmanager, passed with -url. Basic auth goes in through -username and -password-file, and -header carries bearer tokens or a tenant ID. Runs over stdio by default, or SSE with -mode sse.

Setup effort

One command — mcp-alertmanager -url http://alertmanager:9093