Arctura Reef — counterfactual evidence engine (synthetic) MCP Server

by neurflow-oy Your server? Claim it

answering

Arctura Reef — counterfactual evidence engine (synthetic) is answering right now. Last checked 5 min ago.

Deterministic same-seed but-for twin for battery fleets — synthetic-only (DR-236)

Uptime history 52 days of history · worst day 99%

52 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

1244 ms

Response time

average over 24h

authentication required

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Arctura Reef — counterfactual evidence engine (synthetic) 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 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add arctura-reef --transport http https://arctura-reef-mcp.fly.dev/mcp/{token}

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

{
  "mcpServers": {
    "arctura-reef": {
      "url": "https://arctura-reef-mcp.fly.dev/mcp/{token}"
    }
  }
}

~/.codex/config.toml

[mcp_servers.arctura-reef]
url = "https://arctura-reef-mcp.fly.dev/mcp/{token}"

.cursor/mcp.json

{
  "mcpServers": {
    "arctura-reef": {
      "url": "https://arctura-reef-mcp.fly.dev/mcp/{token}"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "arctura-reef": {
      "url": "https://arctura-reef-mcp.fly.dev/mcp/{token}"
    }
  }
}

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

Endpoints

URL	Transport	State	Latency	Checked
https://arctura-reef-mcp.fly.dev/mcp/{token}	streamable-http	needs auth	243 ms	5 min ago

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Arctura Reef — counterfactual evidence engine (synthetic) — questions

Answers built from our own checks of this server.

Why is there no tool list for Arctura Reef — counterfactual evidence engine (synthetic)?

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 Arctura Reef — counterfactual evidence engine (synthetic) 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 1244 ms. The bar chart above shows every period we have measured.

How do I connect Arctura Reef — counterfactual evidence engine (synthetic)?

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 Arctura Reef — counterfactual evidence engine (synthetic) need an API key?

Yes. Every time we knock, Arctura Reef — counterfactual evidence engine (synthetic) 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 Arctura Reef — counterfactual evidence engine (synthetic)?

It answers our handshake in 1244 ms on average, which is faster than 6% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.