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answering

FluxProof is answering right now. Last checked 9 min ago. It exposes 5 tools. Last commit 8 Sep 2026.

Evidence-bearing public webpage monitoring with hashes, diffs, signed webhooks, REST, and MCP.

Uptime history 40 hours of history
40 hours agonow
100.0%
Uptime 24h
92 of 92 checks
5
Tools
read from the server
145 ms
Response time
average over 24h
0
Stars
last commit 8 Sep 2026

Nothing serious here today

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

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 9 min ago.

run in your terminal
claude mcp add fluxproof --transport http https://fluxproof.neoaethel.workers.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "fluxproof": {
      "url": "https://fluxproof.neoaethel.workers.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.fluxproof]
url = "https://fluxproof.neoaethel.workers.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "fluxproof": {
      "url": "https://fluxproof.neoaethel.workers.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "fluxproof": {
      "url": "https://fluxproof.neoaethel.workers.dev/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.

fluxproof
fluxproof_check_now
Run a monitor now and return a source- and hash-bound change receipt.
fluxproof_create_monitor
Create a monitor using a buyer-owned FluxProof API key.
fluxproof_list_changes
List recent evidence receipts for a monitor.
fluxproof_offer
Return free and paid boundaries and purchase routes without charging.
fluxproof_preflight
Fetch a public URL and return fetchability, size, final URL, title, and content hash without page content or payment.

Endpoints

URLTransportStateLatencyChecked
https://fluxproof.neoaethel.workers.dev/mcp streamable-http answering 176 ms 9 min ago

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FluxProof — questions

Answers built from our own checks of this server.

What can FluxProof do?
It exposes 5 tools, read directly from the server on our last check. Among them: fluxproof_check_now, fluxproof_create_monitor, fluxproof_list_changes, fluxproof_offer, fluxproof_preflight. 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 FluxProof 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 145 ms. The bar chart above shows every period we have measured.
How do I connect FluxProof?
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 FluxProof need an API key?
No. FluxProof 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 FluxProof?
It answers our handshake in 145 ms on average, which is faster than 77% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is FluxProof open source?
We cannot say that it is: 0 stars on GitHub, but no licence is declared, and without one the code is not open source by default.