Switchje open data MCP Server

by switchje Your server? Claim it

answering

Switchje open data is answering right now. Last checked 7 min ago. It exposes 5 tools.

Dutch energy market, open data computed nightly: cheapest contracts, market levels, offer lifecycle

Uptime history 27 days of history · worst day 99%

27 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

221 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Switchje open data every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add open-data --transport http https://switchje.nl/mcp

Settings → Connectors → Add custom connector, then paste this address

https://switchje.nl/mcp

~/.codex/config.toml

[mcp_servers.open-data]
url = "https://switchje.nl/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "open-data": {
      "url": "https://switchje.nl/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "open-data": {
      "type": "http",
      "url": "https://switchje.nl/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

cheapest

cheapest_history

The five cheapest offers per day for a standard profile over a date range (ISO dates, inclusive; both optional). A missing day had no valid run.

cheapest_today

The five cheapest energy offers in the Netherlands for a standard household profile on the most recent day with data, with a coarse cost split (supply, taxes and levies, network, feed-in, one-off) and the time each price was fetched. profile: one of methodology()'s standard profiles, e.g. 'median', 'solar', 'heatpump', 'ev'.

market

market_summary

Market aggregates for one day (ISO date; default the most recent) and profile: offers priced per contract type, median yearly cost, spread between cheapest and priciest, offers with cashback, offers added and withdrawn that day.

methodology

methodology

How Switchje ranks offers, the standard profiles spelled out, the licence and how to attribute.

offer

offer_lifecycle

When each offer was first seen on sale and when it was withdrawn (empty = still on sale), across every supplier we track; optionally filtered by supplier code (e.g. 'eneco').

Endpoints

URL	Transport	State	Latency	Checked
https://switchje.nl/mcp	streamable-http	answering	240 ms	7 min ago

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Switchje open data — questions

Answers built from our own checks of this server.

What can Switchje open data do?

It exposes 5 tools, read directly from the server on our last check. Among them: cheapest_history, cheapest_today, market_summary, methodology, offer_lifecycle. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Switchje open data working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 221 ms. The bar chart above shows every period we have measured.

How do I connect Switchje open data?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Switchje open data need an API key?

No. Switchje open data completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Switchje open data?

It answers our handshake in 221 ms on average, which is faster than 60% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.