NubeFact MCP by usefulapi MCP Server

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answering

NubeFact MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 4 tools. Last commit 11 Nov 2026.

Issue, void and check facturas, boletas and notes sent to SUNAT in NubeFact.

Uptime history 41 hours of history

41 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

237 ms

Response time

average over 24h

Stars

last commit 11 Nov 2026

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 November 2026. No other catalogue keeps this.

11 Nov a tool changed version

10 Nov a tool changed version3 times that day

and 2 more, back to 10 November 2026

Nothing serious here today

Today is the operative word: we check NubeFact MCP by usefulapi 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 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add nubefact --transport http https://nubefact.usefulapi.io/mcp

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

https://nubefact.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.nubefact]
url = "https://nubefact.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "nubefact": {
      "url": "https://nubefact.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "nubefact": {
      "type": "http",
      "url": "https://nubefact.usefulapi.io/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

nubefact

nubefact_get_document

Read one issued factura, boleta or note: its PDF, XML and CDR links, whether SUNAT accepted it, and whether it is voided. Operation: consultar_comprobante.

nubefact_get_void_status

Read the voiding (anulación) of a factura, boleta or note: the SUNAT ticket, whether SUNAT accepted it, and the PDF, XML and CDR links. Operation: consultar_anulacion.

nubefact_issue_document

Issue an electronic factura (tipo 1), boleta (tipo 2), credit note (tipo 3) or debit note (tipo 4) through NubeFact, which sends it to SUNAT. Totals are computed from the lines (IGV 18% on gravado lines). This creates a legal document: it cannot be edited or deleted. Void a wrong one with nubefact_void_document. Check the series and number first with nubefact_get_document. Operation: generar_comprobante.

nubefact_void_document

Void (anular) an issued factura, boleta or note. NubeFact sends a voiding communication to SUNAT. The voiding is final: check it later with nubefact_get_void_status. Operation: generar_anulacion.

Endpoints

URL	Transport	State	Latency	Checked
https://nubefact.usefulapi.io/mcp	streamable-http	answering	200 ms	11 min ago

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NubeFact MCP by usefulapi — questions

Answers built from our own checks of this server.

What can NubeFact MCP by usefulapi do?

It exposes 4 tools, read directly from the server on our last check. Among them: nubefact_get_document, nubefact_get_void_status, nubefact_issue_document, nubefact_void_document. 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 NubeFact MCP by usefulapi 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 237 ms. The bar chart above shows every period we have measured.

How do I connect NubeFact MCP by usefulapi?

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 NubeFact MCP by usefulapi need an API key?

No. NubeFact MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is NubeFact MCP by usefulapi?

It answers our handshake in 237 ms on average, which is faster than 57% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is NubeFact MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at nubefact.usefulapi.io, which runs on its operator's own terms.