Fermi MCP Server

by kromatic-innovation Your server? Claim it

not responding

Fermi is listed as active in the registry but did not answer our last check.

Calibrated probability distributions from natural-language questions via REST and MCP.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 91 checks

—

Tools

hidden behind auth

360 ms

Response time

average over 24h

open, no key

Access

sse

Fermi does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add fermi --transport http https://fermi.krobar.ai/mcp/sse/

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "fermi": {
      "url": "https://fermi.krobar.ai/mcp/sse/"
    }
  }
}

~/.codex/config.toml

[mcp_servers.fermi]
url = "https://fermi.krobar.ai/mcp/sse/"

.cursor/mcp.json

{
  "mcpServers": {
    "fermi": {
      "url": "https://fermi.krobar.ai/mcp/sse/"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "fermi": {
      "url": "https://fermi.krobar.ai/mcp/sse/"
    }
  }
}

Endpoints

URL	Transport	State	Latency	Checked
https://fermi.krobar.ai/mcp/sse/	sse	answering	360 ms	11 min ago

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Fermi — questions

Answers built from our own checks of this server.

Is Fermi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 360 ms. The bar chart above shows every period we have measured.

Is Fermi still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

The registry lists Fermi as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Fermi?

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.

Does Fermi need an API key?

No. Fermi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.