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MRVN DE Open Data MCP

Official registry Data and databases

MRVN: German public tenders, MaStR energy units and EV charging stations via your RapidAPI key.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http mrvn-de-open-data-mcp 'https://de-opendata-mcp.pages.dev/mcp' --header 'X-RapidAPI-Key: <Your RapidAPI key (free BASIC plan: 100 requests/day per API)>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mrvn-de-open-data-mcp": {
            "type": "http",
            "url": "https://de-opendata-mcp.pages.dev/mcp",
            "headers": {
                "X-RapidAPI-Key": "<Your RapidAPI key (free BASIC plan: 100 requests/day per API)>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. MRVN DE Open Data MCP
  2. Tools (12)
  3. Config
  4. Source
  5. OpenAPI specs (REST via RapidAPI)
  6. License & data attribution
  7. Privacy

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)

ToolPurpose
tender_search_noticesSearch procurement notices
tender_get_noticeGet one notice by ID
tender_get_statsAggregate tender stats
tender_healthData freshness / health
mastr_search_unitsSearch MaStR energy units
mastr_get_unitGet one unit by MaStR number
mastr_get_statsAggregate unit stats
mastr_healthData freshness / health
ladesaeulen_search_stationsSearch EV charging stations
ladesaeulen_get_stationGet one station by Ladeeinrichtungs-ID
ladesaeulen_get_statsAggregate station stats
ladesaeulen_healthData freshness / health

tools/list works without a key. Tool calls require your own RapidAPI key, subscribed to [DE Tender Query][tender], [DE MaStR Units][mastr] and/or [DE Ladesäulen Query][ladesaeulen]. 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.

[tender]: https://rapidapi.com/mrvn-mrvn-default/api/de-tender-query [mastr]: https://rapidapi.com/mrvn-mrvn-default/api/de-mastr-units [ladesaeulen]: https://rapidapi.com/mrvn-mrvn-default/api/de-ladesaulen-query

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.

Frequently asked questions

What is MRVN DE Open Data MCP?

MRVN: German public tenders, MaStR energy units and EV charging stations via your RapidAPI key.

How do I install MRVN DE Open Data MCP?

It runs as a remote server. In Claude Code: claude mcp add --transport http mrvn-de-open-data-mcp 'https://de-opendata-mcp.pages.dev/mcp' --header 'X-RapidAPI-Key: <Your RapidAPI key (free BASIC plan: 100 requests/day per API)>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does MRVN DE Open Data MCP need an API key?

Yes. It expects X-RapidAPI-Key, which you set in its configuration.

Is MRVN DE Open Data MCP open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains MRVN DE Open Data MCP?

It is published by MarvinSMX. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.