The InvoiceIn MCP server,
connected in one click.
XRechnung, Factur-X, Peppol, FatturaPA, KSeF → EN 16931 JSON + fix hints. Hosted; MIT=examples only. Connect the official InvoiceIn MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add InvoiceIn to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http invoicein https://invoicein-api.peculiar.systems/mcpRun in your terminal, then restart Claude Code.
InvoiceIn · https://invoicein-api.peculiar.systems/mcp
What your AI can do with InvoiceIn
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “read_invoice”: Parse one European e-invoice into canonical EN 16931 JSON and validate it against the official rule sets in the same call. Use it when you n.”
“Use “validate_invoice”: Validate one European e-invoice against the official rule sets (XSD, EN 16931, XRechnung, Peppol BIS, FatturaPA, KSeF, arithmetic) and retur.”
“Use “invoice_to_html”: Render one European e-invoice as a self-contained, printable HTML page: header, seller and buyer, line items, VAT breakdown, totals and paym.”
“Use “invoice_to_csv”: Export one European e-invoice as a flat CSV table for a spreadsheet or a database import. Document columns: invoice id, type, issue and due.”
How secure is the InvoiceIn MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how InvoiceIn holds up.
Official endpoint
Operated by InvoiceIn (peculiar.systems) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If InvoiceIn adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick InvoiceIn
Choose InvoiceIn in the gate directory. No sign-in needed.
Use it anywhere
InvoiceIn's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools InvoiceIn exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
read_invoice — Parse one European e-invoice into canonical EN 16931 JSON and validate it against the official rule sets in the same call. Use it when you n
validate_invoice — Validate one European e-invoice against the official rule sets (XSD, EN 16931, XRechnung, Peppol BIS, FatturaPA, KSeF, arithmetic) and retur
invoice_to_html — Render one European e-invoice as a self-contained, printable HTML page: header, seller and buyer, line items, VAT breakdown, totals and paym
invoice_to_csv — Export one European e-invoice as a flat CSV table for a spreadsheet or a database import. Document columns: invoice id, type, issue and due
invoice_to_datev — Convert one received (purchase) e-invoice into a DATEV Buchungsstapel import file (EXTF format 700) for German bookkeeping in DATEV Kanzlei-
Who runs the InvoiceIn MCP server?
The InvoiceIn MCP server at a glance
https://invoicein-api.peculiar.systems/mcpQuestions, answered
Is there an official InvoiceIn MCP server?
Yes — InvoiceIn operates its own remote MCP server at invoicein-api.peculiar.systems. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect InvoiceIn to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick InvoiceIn in the directory. No account or sign-in is needed. From then on, InvoiceIn's tools are available in every client you've connected to gate.
Do I need to host anything?
No. InvoiceIn runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the InvoiceIn MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect InvoiceIn in minutes. No credit card required.
Connect more than just InvoiceIn
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up InvoiceIn in: Claude · Claude Code · ChatGPT · Cursor · VS Code