InkVoice — XRechnung & E-Invoicing is a remote MCP server that gives an AI agent 5 tools, among them calculate_vat, check_leitweg_id, create_xrechnung. It answers at https://api.inkvoice.net/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 12 September 2026; the last check, on 24 October 2026, succeeded.
XRechnung and ZUGFeRD e-invoicing (EN 16931): create, validate, check Leitweg-IDs, German VAT.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
calculate_vat | Converts between net, tax and gross for a given VAT rate, in either direction. Give an amount and say whether it is net or gross, and you get all three figures back rounded to the cent. Germany's rates are 19 % (standard) and 7 % (reduced), Inputs: amount, rate, basis |
check_leitweg_id | Checks a German Leitweg-ID — the routing identifier that goes in BT-10 of an XRechnung to a public authority. An invoice to a German public body with a wrong or missing Leitweg-ID is rejected, so this is worth checking before building a doc Inputs: leitwegId |
create_xrechnung | Builds a German XRechnung 3.x electronic invoice (EN 16931, CII syntax) from invoice details and returns the XML as text. This is the format German public-sector buyers are legally required to receive, and that many private B2B buyers now a Inputs: invoice |
create_zugferd | Builds a ZUGFeRD 2.x / Factur-X hybrid invoice from the same details create_xrechnung takes, and returns it as a PDF file. A hybrid is one invoice stated twice in one file: a PDF/A-3 document a person reads, carrying the same invoice inside Inputs: invoice |
validate_einvoice | Reads an existing electronic invoice and reports what is wrong with it. Accepts XRechnung and ZUGFeRD XML in either EN 16931 syntax — CII (used by XRechnung and ZUGFeRD) and UBL — and reports the syntax and profile it found along with the i Inputs: xml |
Every block below points at https://api.inkvoice.net/mcp. Pick your client and copy.
claude mcp add --transport http inkvoice-xrechnung-e-invoicing https://api.inkvoice.net/mcp
{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.inkvoice.net/mcp"]
}
}
}{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"url": "https://api.inkvoice.net/mcp"
}
}
}{
"servers": {
"inkvoice-xrechnung-e-invoicing": {
"type": "http",
"url": "https://api.inkvoice.net/mcp"
}
}
}{
"context_servers": {
"inkvoice-xrechnung-e-invoicing": {
"url": "https://api.inkvoice.net/mcp"
}
}
}{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"serverUrl": "https://api.inkvoice.net/mcp"
}
}
}{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"url": "https://api.inkvoice.net/mcp"
}
}
}name: InkVoice — XRechnung & E-Invoicing
version: 0.0.1
schema: v1
mcpServers:
- name: InkVoice — XRechnung & E-Invoicing
type: streamable-http
url: https://api.inkvoice.net/mcp{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"httpUrl": "https://api.inkvoice.net/mcp"
}
}
}{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"type": "http",
"url": "https://api.inkvoice.net/mcp"
}
}
}{
"mcpServers": {
"inkvoice-xrechnung-e-invoicing": {
"url": "https://api.inkvoice.net/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.inkvoice.net%2Fmcp&type=streamable_http&id=inkvoice-xrechnung-e-invoicing&name=InkVoice%20%E2%80%94%20XRechnung%20%26%20E-Invoicing
It answered our last check on 24 October 2026 in 139 ms. Over 6 checks since 12 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by inkvoice.net and served from api.inkvoice.net, the vendor's own domain: https://api.inkvoice.net/mcp.
5, as returned by the server's own tools/list on 22 September 2026: calculate_vat, check_leitweg_id, create_xrechnung, create_zugferd, validate_einvoice.
It answered our last check on 24 October 2026 in 139 ms. Over 6 checks since 12 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.inkvoice.net/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: net.inkvoice. Endpoint host: api.inkvoice.net. ARD identifier: urn:air:net.inkvoice:mcp:inkvoice.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.