FluxProof MCP Server

by equinoxaifinance-rgb Your server? Claim it

answering

FluxProof is answering right now. Last checked 6 min ago. It exposes 6 tools. Last commit 15 Oct 2026.

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

Uptime history 48 days of history · worst day 92%

48 days agonow

100.0%

Uptime 24h

182 of 182 checks

Tools

read from the server

251 ms

Response time

average over 24h

Stars

last commit 15 Oct 2026

What changed 25

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 23 September 2026. No other catalogue keeps this.

15 Oct a tool description was rewritten fluxproof_offer

12 Oct 4 tool descriptions were rewritten7 times that day fluxproof_create_monitor, fluxproof_get_free_key, fluxproof_offer and 1 more

12 Oct 4 tools changed the parameters they ask for5 times that day fluxproof_check_now, fluxproof_create_monitor, fluxproof_list_changes and 1 more

10 Oct a tool appeared fluxproof_get_free_key

8 Oct 3 tools changed the parameters they ask for fluxproof_check_now, fluxproof_create_monitor, fluxproof_list_changes

23 Sep 4 tool descriptions were rewritten fluxproof_check_now, fluxproof_create_monitor, fluxproof_offer and 1 more

23 Sep 4 tools changed the parameters they ask for fluxproof_check_now, fluxproof_create_monitor, fluxproof_list_changes and 1 more

and 4 more, back to 23 September 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.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add fluxproof --transport http https://fluxproof.neoaethel.workers.dev/mcp

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

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

{
  "servers": {
    "fluxproof": {
      "type": "http",
      "url": "https://fluxproof.neoaethel.workers.dev/mcp"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Available tools 6

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. Consumes check quota, stores a receipt and may deliver a configured webhook. Not an idempotent read.

fluxproof_create_monitor

Create a monitor using a buyer-owned FluxProof API key. Creates persistent state and performs a baseline check, consuming quota. Not idempotent: each call creates a new monitor.

fluxproof_get_free_key

Create a free FluxProof API key: one page, checked daily, for 30 days, no card. One per network per month. The key is returned once and is a secret credential.

fluxproof_list_changes

List recent evidence receipts for a monitor.

fluxproof_offer

Return free and paid boundaries and purchase routes without charging. Returns the free daily plan, the $9 paid pass (30 days paid once; when offered, also $9 a month through the human checkout, cancel any time), the human checkout link and the agent payment route. Example: {}. Reading the offer charges nothing.

fluxproof_preflight

Fetch a public URL and return fetchability, size, final URL, title, and content hash without page content or payment. How it works: given one public page address, FluxProof fetches it once and says whether it can watch it; nothing is created or charged. Example: {"url":"https://example.com/"}.

Endpoints

URL	Transport	State	Latency	Checked
https://fluxproof.neoaethel.workers.dev/mcp	streamable-http	answering	194 ms	6 min ago
https://fluxproof.tryneverclosed.com/mcp	streamable-http	answering	173 ms	6 min ago

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FluxProof — questions

Answers built from our own checks of this server.

What can FluxProof do?

It exposes 6 tools, read directly from the server on our last check. Among them: fluxproof_check_now, fluxproof_create_monitor, fluxproof_get_free_key, 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 182 of 182 checks got a reply (100.0%), average response time 251 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 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 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 6 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 251 ms on average, which is faster than 66% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is FluxProof open source?

The code is open source: it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at fluxproof.neoaethel.workers.dev, which runs on its operator's own terms.