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VeriFactu MCP Server

by arceedev Your server? Claim it
answering

VeriFactu is answering right now. Last checked 14 min ago. 250 installs a week from pypi. Last commit 7 Nov 2026.

Audit VERI*FACTU hash chains, build the AEAT tax QR, build and validate Facturae 3.2.2 invoices.

Installs per day peak 250 · avg 8
a month agotoday
Uptime history 24 hours of history
24 hours agonow
100.0%
Uptime 24h
89 of 89 checks
—
Tools
hidden behind auth
165 ms
Response time
average over 24h
250
Installs / week
npm and PyPI

Nothing serious here today

Today is the operative word: we check VeriFactu 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 14 min ago.

run in your terminal
claude mcp add verifactu-mcp --transport http https://mcp.keyflint.dev/verifactu/mcp
Settings → Connectors → Add custom connector, then paste this address
https://mcp.keyflint.dev/verifactu/mcp
~/.codex/config.toml
[mcp_servers.verifactu-mcp]
url = "https://mcp.keyflint.dev/verifactu/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "verifactu-mcp": {
      "url": "https://mcp.keyflint.dev/verifactu/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "verifactu-mcp": {
      "type": "http",
      "url": "https://mcp.keyflint.dev/verifactu/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URLTransportStateLatencyChecked
https://mcp.keyflint.dev/verifactu/mcp streamable-http sign-in 114 ms 14 min ago

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VeriFactu — questions

Answers built from our own checks of this server.

Why is there no tool list for VeriFactu?
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 VeriFactu working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 89 of 89 checks got a reply (100.0%), average response time 165 ms. The bar chart above shows every period we have measured.
How do I connect VeriFactu?
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. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.
How do you sign in to VeriFactu?
No API key is involved. VeriFactu answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.
How fast is VeriFactu?
It answers our handshake in 165 ms on average, which is faster than 80% 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.
How many people use VeriFactu?
The pypi package verifactu-keyflint-mcp was installed 250 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is VeriFactu open source?
We cannot say either way: written in Python and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.