MCP server

Factur-X: Generate & Validate E-Invoices

io.github.LeBorgneAntoine/facturx

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Validate Factur-X, CII & UBL e-invoices free, no key. Generate compliant invoices from JSON.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

10

Token cost

About 20,247 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http facturx https://facturx.orvel.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.facturx]
url = "https://facturx.orvel.dev/mcp"

Gemini CLI

{"mcpServers":{"facturx":{"httpUrl":"https://facturx.orvel.dev/mcp"}}}

Cursor

{"mcpServers":{"facturx":{"url":"https://facturx.orvel.dev/mcp"}}}

VS Code

{"servers":{"facturx":{"type":"http","url":"https://facturx.orvel.dev/mcp"}}}

Antigravity

agy mcp add facturx https://facturx.orvel.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"facturx","server_url":"https://facturx.orvel.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"facturx","server_url":"https://facturx.orvel.dev/mcp"}

Tools

• check_invoice_parties ~976 tokens
  Check a supplied seller AND buyer together, returning combined readiness and separate evidence. Use before generate_invoice; use check_party for one party and validate_invoice for document rules. Each party needs siren, siret or vat; siret wins over siren. French identifiers or country_code
• check_party ~844 tokens
  Check exactly one seller or buyer's registry identifiers and readiness through EU Verify. Use to correct one party's identifiers; use check_invoice_parties to check seller and buyer together, or validate_invoice for document rules. Supply siren, siret or vat; siret wins over siren. A SI
• draft_credit_note ~7810 tokens
  Draft a type-381 credit note from an existing invoice, for all lines or selected quantities. Use to reverse an existing invoice's charges; use get_invoice_example for a synthetic credit-note example. invoice must be the original generate_invoice input object, not extract_invoice output.
• embed_xml ~478 tokens
  Combine a visual PDF you already have with CII XML into one Factur-X PDF/A-3. Use for an existing visual invoice; use generate_invoice to render invoice data or produce UBL. Match the PDF's parties, lines and totals to xml yourself: check examines only XML and cannot detect disagreement
• explain_finding ~391 tokens
  Turn a validation rule id into the invoice field to change and an example value. Use after validate_invoice or a generate_invoice rule error, not to validate an invoice itself. rule is trimmed and uppercased to select a guide entry. message/json_pointer must come from that same finding:
• extract_invoice ~452 tokens
  Extract invoice parties, dates, lines, totals and VAT as JSON for bookkeeping or matching. Use validate_invoice for compliance; this performs no OCR or recalculation. Supply one source: nonblank xml overrides document_base64 without inspecting it, so omit xml to extract a PDF's attachme
• generate_invoice ~8000 tokens
  Create an EN 16931 e-invoice from structured data: Factur-X PDF/A-3, CII XML, or UBL 2.1 XML. Use when you have the parties, lines and dates and need the document. To revise one, correct the input and regenerate; save and deliver the returned file through your own system. Do not use when yo
• get_invoice_example ~375 tokens
  Return a complete invoice or credit-note example to edit and pass to generate_invoice. Use this first, instead of inventing fields. No API key is required, and the call does not count as a document. The seller and buyer are sample data: replace them, the number, the dates and the lines
• validate_invoice ~521 tokens
  Check a Factur-X PDF, CII XML or UBL XML against EN 16931, and report the fields to fix. Use when the caller supplies a document, including after corrections; use extract_invoice for business data. With no document and only a request to try the product, choose view_invoice_demo instead.
• view_invoice_demo ~400 tokens
  Demonstrate the engine on bundled synthetic samples only; never checks a user's invoice. Use for product evaluation without a key. To check a supplied document, choose validate_invoice. Choose sample=valid to inspect a passing CII invoice or sample=invalid to see the missing-buyer-name

Browse

• GitHub tools
• Website monitoring
• PDF tools
• OCR (text from images)
• Invoicing and accounting

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