MRVN DE Open Data MCP

MRVN DE Open Data MCP

By MRVN.

Remote MCP server (Streamable HTTP, stateless) giving AI agents access to German open data:

• Public procurement notices from oeffentlichevergabe.de – search by keyword, CPV code, Bundesland, value, deadline.
• Energy units from the Marktstammdatenregister (MaStR) of the Bundesnetzagentur – solar, wind, storage etc., by location, technology, capacity.
• EV charging stations from the Ladesäulenregister of the Bundesnetzagentur – by PLZ, Bundesland, power (kW), plug type, operator, radius or bounding box.

Endpoint: https://de-opendata-mcp.pages.dev/mcp · Landing page: https://de-opendata-mcp.pages.dev/

Tools (12)

Tool	Purpose
tender_search_notices	Search procurement notices
tender_get_notice	Get one notice by ID
tender_get_stats	Aggregate tender stats
tender_health	Data freshness / health
mastr_search_units	Search MaStR energy units
mastr_get_unit	Get one unit by MaStR number
mastr_get_stats	Aggregate unit stats
mastr_health	Data freshness / health
ladesaeulen_search_stations	Search EV charging stations
ladesaeulen_get_station	Get one station by Ladeeinrichtungs-ID
ladesaeulen_get_stats	Aggregate station stats
ladesaeulen_health	Data freshness / health

tools/list works without a key. Tool calls require your own RapidAPI key, subscribed to DE Tender Query, DE MaStR Units and/or DE Ladesäulen Query. Each has a free BASIC plan (100 requests/day); paid plans exist for higher volume. Your key is forwarded only to the RapidAPI gateway and is not stored.

Config

{
  "mcpServers": {
    "de-opendata": {
      "type": "http",
      "url": "https://de-opendata-mcp.pages.dev/mcp",
      "headers": { "X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY" }
    }
  }
}

Authorization: Bearer <key> is also accepted.

Step-by-step setup for Cline, Cursor, Claude Code and Claude Desktop (incl. the mcp-remote stdio bridge / Dockerfile for clients without remote support): see llms-install.md.

Source

worker.src.js is the Cloudflare Pages worker (JSON-RPC over POST /mcp, protocol versions 2025-06-18 / 2025-03-26 / 2024-11-05). build-tools.mjs injects tool definitions (tools.generated.json); smoke.mjs runs a smoke test against a URL.

OpenAPI specs (REST via RapidAPI)

The three backing REST APIs are described in openapi/ (OpenAPI 3.0.3, server = RapidAPI gateway, header X-RapidAPI-Key):

• openapi/de-tender-query.openapi.yaml: German public procurement notices
• openapi/de-mastr-units.openapi.yaml: MaStR energy units
• openapi/de-ladesaulen-query.openapi.yaml: EV charging stations (Ladesäulenregister)

License & data attribution

• Code: MIT (see LICENSE).
• Procurement data: oeffentlichevergabe.de, published under CC0 1.0.
• EV charging station data: Bundesnetzagentur.de, Ladesäulenregister, CC BY 4.0; reformatted.
• MaStR data: © Bundesnetzagentur – Marktstammdatenregister (MaStR), https://www.marktstammdatenregister.de/MaStR/Datendownload. License: Datenlizenz Deutschland – Namensnennung – Version 2.0 (dl-de/by-2-0), https://www.govdata.de/dl-de/by-2-0. Data modified (normalized). Not an official service.

Privacy

The server keeps an anonymous per-tool call counter: one count per tools/call per tool name per UTC day (Workers KV). No IPs, API keys, user agents or arguments are stored. Your RapidAPI key is only forwarded to the RapidAPI gateway.