MaStR MCP Server

An MCP server for the Marktstammdatenregister (MaStR) - the German energy market master data register operated by the Bundesnetzagentur (Federal Network Agency). Enables Claude Desktop, Cowork, and Claude Code to directly access the German energy plant registry. It runs locally over stdio via the published package.

People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-04-15 · ★ 6 · #611 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

MIT · Python servers · how we verify → /methodology

01 · Install MaStR MCP Server

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add ulircs-mastr-mcp-server -- uvx mastr-mcp-server

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "ulircs-mastr-mcp-server": {
      "command": "uvx",
      "args": [
        "mastr-mcp-server"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

pypi package mastr-mcp-server - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.UliRCS is GitHub-verified and matches the repo owner

03 · Who maintains MaStR MCP Server

MaStR MCP Server is maintained by ulircs. It's the only MCP server we track from this author; the repo dates to Apr 2026.

04 · Facts

repository: github.com/ulircs/mastr-mcp-server
website: https://github.com/UliRCS/mastr-mcp-server
category: other - ranked #611 of 848 actively-maintained other servers as of 2026-08-25.
registry: io.github.UliRCS/mastr-mcp-server (active, first published 2026-04-15)
packages: pypi:mastr-mcp-server

05 · MaStR MCP Server FAQ

What is MaStR MCP Server?

Is MaStR MCP Server still maintained?

Yes - as of 2026-08-25, its last commit was 2026-04-15. We re-verify nightly.

How do I install MaStR MCP Server?

Run `uvx mastr-mcp-server`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does MaStR MCP Server run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

06 · Alternatives to MaStR MCP Server

Alternatives to MaStR MCP Server

Maintained other servers if MaStR MCP Server isn't the fit.

More MCP servers to compare · Unclaimed Sol · Unleash MCP · Unstoppable Domains · Changelogai · Mdshare

More Python MCP servers · Lachesis · Reclaim MCP Server · Silicon Friendly · Microsoft Access Database · Contrast API · see all