The Attestwire MCP server,
connected in one click.
EN 16931: validate invoice data or a UBL/CII file, emit UBL or CII XML. XRechnung, Peppol. Not PDF. Connect the official Attestwire 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 Attestwire 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 attestwire https://api.attestwire.com/mcpRun in your terminal, then restart Claude Code.
Attestwire · https://api.attestwire.com/mcp
What your AI can do with Attestwire
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “validate_invoice”: Validate an invoice against EN 16931 and its national CIUS rule sets (XRechnung UBL/CII, Peppol BIS 3.0, Factur-X). Returns every failure as.”
“Use “validate_invoice_xml”: Validate an e-invoice FILE the user already has, in either EN 16931 syntax and of either document type. Reads a UBL 2.1 Invoice, a UBL 2.1 C.”
“Use “generate_invoice”: Generate compliant e-invoice XML from a JSON invoice, in either EN 16931 syntax. Profiles: en16931, xrechnung-ubl, peppol-bis-3, xrechnung-c.”
“Use “explain_rule”: Explain one EN 16931 / XRechnung / Peppol BIS rule in plain English: what it requires, why, the business term it constrains, a concrete fix.”
How secure is the Attestwire MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Attestwire holds up.
Official endpoint
Operated by Attestwire (attestwire.com) 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 Attestwire 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 Attestwire
Choose Attestwire in the gate directory. No sign-in needed.
Use it anywhere
Attestwire'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 Attestwire exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
validate_invoice — Validate an invoice against EN 16931 and its national CIUS rule sets (XRechnung UBL/CII, Peppol BIS 3.0, Factur-X). Returns every failure as
validate_invoice_xml — Validate an e-invoice FILE the user already has, in either EN 16931 syntax and of either document type. Reads a UBL 2.1 Invoice, a UBL 2.1 C
generate_invoice — Generate compliant e-invoice XML from a JSON invoice, in either EN 16931 syntax. Profiles: en16931, xrechnung-ubl, peppol-bis-3, xrechnung-c
explain_rule — Explain one EN 16931 / XRechnung / Peppol BIS rule in plain English: what it requires, why, the business term it constrains, a concrete fix
check_vies_status — Current availability of VIES, the European Commission service that validates EU VAT numbers. Per-member-state status, latency and 24h/7d upt
check_french_readiness — Look up a French company by SIREN, SIRET or name in INSEE SIRENE open data, for the 2026-2027 French e-invoicing mandate. Confirms the compa
list_approved_platforms — The official list of Plateformes Agréées (PA, formerly PDP) that DGFiP has approved to transmit invoices under the French e-invoicing mandat
issue_api_key — Mint a free Attestwire API key (100 documents/month, no signup flow, no card) so validate_invoice and generate_invoice can be used. THE KEY
+ 1 more tools once connected
Who runs the Attestwire MCP server?
The Attestwire MCP server at a glance
https://api.attestwire.com/mcpQuestions, answered
Is there an official Attestwire MCP server?
Yes — Attestwire operates its own remote MCP server at api.attestwire.com. 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 Attestwire to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Attestwire in the directory. No account or sign-in is needed. From then on, Attestwire's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Attestwire runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Attestwire 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 Attestwire in minutes. No credit card required.
Connect more than just Attestwire
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Attestwire in: Claude · Claude Code · ChatGPT · Cursor · VS Code