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Cernion Energy Tools MCP Server

answering

Cernion Energy Tools MCP is answering right now. Last checked 7 min ago. Last commit 13 Sep 2026.

Energy-domain MCP tools for Cernion context, evidence and guarded process preparation

Uptime history 42 days of history · worst day 99%
42 days agonow
100.0%
Uptime 24h
92 of 92 checks
Tools
hidden behind auth
197 ms
Response time
average over 24h
2
Stars
last commit 13 Sep 2026

What the code does

We read the source, 53 min ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

A line of code looks encrypted src/location-resolution.js:73
  /\b([A-ZÄÖÜ][A-Za-zÄÖÜäöüß-]+(?:\s+[A-ZÄÖÜ][A-Za-zÄÖÜäöüß-]+)?)\s+(?:in|im)\s+(?:Baden-Württemberg|Bayern|Nordrhein-Westfalen|Hessen|Thüringen|Sachsen-Anhalt|Sachsen|Brandenburg|Mecklenburg-Vorpommern|Schleswig-Holstein|Niedersachsen|Rheinland-Pfalz|Saarla…
  const result = spawnSync(jestBin, args, {
Builds a database query by concatenation create-service.js:162, src/app.html:4356
${updateRequest ? `Update Request:\n${updateRequest}` : ''}
    return await page.$$eval(`${tableSelector} tr`, (trs) =>
Page executes code built at runtime src/app.html:2564
        formGrid.innerHTML = requiredInputs

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

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.

run in your terminal
claude mcp add cernion-energy-tools --transport http https://api.cernion.de/api/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "cernion-energy-tools": {
      "url": "https://api.cernion.de/api/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.cernion-energy-tools]
url = "https://api.cernion.de/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "cernion-energy-tools": {
      "url": "https://api.cernion.de/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "cernion-energy-tools": {
      "url": "https://api.cernion.de/api/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URLTransportStateLatencyChecked
https://api.cernion.de/api/mcp streamable-http needs auth 185 ms 7 min ago

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Cernion Energy Tools MCP — questions

Answers built from our own checks of this server.

Why is there no tool list for Cernion Energy Tools MCP?
The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.
Is Cernion Energy Tools MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 197 ms. The bar chart above shows every period we have measured.
How do I connect Cernion Energy Tools MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own credentials: it refuses anonymous clients.
Does Cernion Energy Tools MCP need an API key?
Yes. Every time we knock, Cernion Energy Tools MCP answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Cernion Energy Tools MCP?
It answers our handshake in 197 ms on average, which is faster than 67% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Cernion Energy Tools MCP open source?
Yes — it is published under the GPL-3.0 licence, written in JavaScript, 2 stars on GitHub and 19 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.