Duplicacy MCP Server

MCP server for Duplicacy — monitor backup status and Prometheus metrics via the Model Context Protocol

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What is the Duplicacy MCP MCP server?

Most monitoring and observability work still happens through a UI a human drives. Duplicacy MCP MCP server moves it into the conversation instead. MCP server for Duplicacy — monitor backup status and Prometheus metrics via the Model Context Protocol.

The short version

A tiny bridge that reads Duplicacy backup metrics from a Prometheus exporter and exposes them as an MCP server, enabling LLMs to monitor backup status, progress, and health.

Getting it running

Installation goes through your MCP client rather than a global install: point it at duplicacy-mcp on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

The tools it exposes

The server publishes 8 tools. What each one is for:

  • Type — What for
  • Resources — Browse backup status, progress, and health read-only
  • Tools — Query backup history, list snapshots, and check prune status
  • Variable — Default
  • DUPLICACY_EXPORTER_URLhttp://localhost:9750
  • LISTEN_ADDR — 127.0.0.1:8080
  • TRANSPORT(empty = HTTP)
  • Project — Description

What it needs from you

Configuration is passed through the environment: DUPLICACY_EXPORTER_URL. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Things to watch

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

How it compares

Among the monitoring and observability options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Duplicacy MCP's toolset — Type, Resources, Tools and 5 more — is a fair guide to whether it matches your workflow. It is maintained by geiserx; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Duplicacy MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Available tools

ToolWhat it does
TypeWhat for
ResourcesBrowse backup status, progress, and health read-only
ToolsQuery backup history, list snapshots, and check prune status
VariableDefault
DUPLICACY_EXPORTER_URLhttp://localhost:9750
LISTEN_ADDR127.0.0.1:8080
TRANSPORT_(empty = HTTP)_
ProjectDescription

How to install the Duplicacy MCP MCP server

{
  "mcpServers": {
    "duplicacy": {
      "command": "npx",
      "args": ["-y", "duplicacy-mcp"],
      "env": {
        "DUPLICACY_EXPORTER_URL": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
DUPLICACY_EXPORTER_URLEndpoint or connection string the server talks to.Yes

Example prompts to try

  • Use Duplicacy MCP to Type.
  • Use Duplicacy MCP to Resources.
  • Use Duplicacy MCP to Tools.

Frequently asked questions

It connects Duplicacy MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 8 tools (Type, Resources, Tools, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Duplicacy MCP directly.