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E-Invoice Checker

by einvoicechecker.com · remote · no sign-in to list tools · v1.0.2 · published by com.einvoicechecker

Validate, parse and render EU e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS 3.0, KSeF.

Changes · 7
CompareRegistry entry

8 tools: 7 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http einvoice https://einvoicechecker.com/v1/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

8 tools

Changes things 7Claude Code: ask
  • detect_invoiceIdentify the format, syntax, profile/customization and country standard of an e-invoice file.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Identify the format, syntax, profile/customization and country standard of an e-invoice file. Cheap first step before validating.
  • fix_invoiceFix validation errors of an EN 16931 invoice (XRechnung, Peppol BIS, ZUGFeRD/Factur-X XML, UBL, CII) deterministically: empty elements, decimals, date and code formats, specificati…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Fix validation errors of an EN 16931 invoice (XRechnung, Peppol BIS, ZUGFeRD/Factur-X XML, UBL, CII) deterministically: empty elements, decimals, date and code formats, specification ids; with totals=true also recalculates totals and the VAT breakdown from the lines. Data that is not in the file (Leitweg-ID, seller contact, endpoint ids, payment terms) is taken from "values"; missing ones are listed in needs_input. Returns the change list, the remaining errors and the corrected XML. Counts as 2 requests.
  • my_usagePlan, monthly quota, usage this month and subscription state of the API key used for this connection.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Plan, monthly quota, usage this month and subscription state of the API key used for this connection. Free.
  • parse_invoiceExtract the invoice as normalised JSON: number, dates, seller, buyer, lines, VAT breakdown, totals, payment details.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Extract the invoice as normalised JSON: number, dates, seller, buyer, lines, VAT breakdown, totals, payment details. Works for every supported format.
  • render_invoice_htmlHuman-readable invoice document (HTML, A4 print layout) from the XML, in the requested language.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Human-readable invoice document (HTML, A4 print layout) from the XML, in the requested language.
  • render_invoice_pdfHuman-readable PDF of the invoice (counts as 2 requests).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Human-readable PDF of the invoice (counts as 2 requests). Returned as a base64 resource.
  • validate_invoiceRun the official rule set for the detected format (KoSIT for XRechnung/ZUGFeRD/Factur-X, OpenPeppol for Peppol BIS, FA(3) schema for KSeF, Porezna uprava HR-CIUS schematron for Cro…No findings

    Why it is in this group

    • The name "validate_invoice" says "validate": a word for reading.
    • The description's first verb is "run": a word for a change.
    Description, as the server wrote it
    Run the official rule set for the detected format (KoSIT for XRechnung/ZUGFeRD/Factur-X, OpenPeppol for Peppol BIS, FA(3) schema for KSeF, Porezna uprava HR-CIUS schematron for Croatian eRačun, Facturae XSD + calculation/NIF/DIR3 rules for Spain, LHDN SDK rules for MyInvois). Returns valid/invalid with every failed rule: id, severity, message, XPath.
Only reads 1Claude Code: allow
  • list_supported_formatsWhich formats, profiles and rule sets this service supports, and what each tool costs.No findings

    Why it is in this group

    • The name "list_supported_formats" says "list": a word for reading.
    Description, as the server wrote it
    Which formats, profiles and rule sets this service supports, and what each tool costs.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:31 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable
yes
HTTP status of an anonymous initialize
200
tools/list served without credentials
yes
Tools that change things, listed without credentials
7
Protocol version
2025-06-18
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
none
RFC 9728 protected resource metadata
none
Authorization servers
none
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed
  • WarnThe whole server

    The endpoint served tools/list without credentials, and the list has 7 tools that change things (7 write). Whether a call also works without credentials was not tested: tools are never called.

    Matched text

    https://einvoicechecker.com/v1/mcp: tools/list returned 8 tools to an anonymous client, including detect_invoice (write), parse_invoice (write), fix_invoice (write), validate_invoice (write), render_invoice_html (write) and 2 more

    What this check looks for

Install

Pinned to version 1.0.2. Values in angle brackets are yours to fill in.

claude mcp add --transport http einvoice https://einvoicechecker.com/v1/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__einvoice__list_supported_formats"
    ],
    "ask": [
      "mcp__einvoice__detect_invoice",
      "mcp__einvoice__parse_invoice",
      "mcp__einvoice__fix_invoice",
      "mcp__einvoice__validate_invoice",
      "mcp__einvoice__render_invoice_html",
      "mcp__einvoice__render_invoice_pdf",
      "mcp__einvoice__my_usage"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as einvoice. Review it before you use it.