MCP server

Attestwire Official

com.attestwire/en16931

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

EN 16931: validate invoice data, UBL/CII or PDF; emit XRechnung/Peppol XML, never a PDF.

Working at last checkVerified publisher: attestwire.comAbout 5,092 tokens per request once connected14 tools

Website

https://api.attestwire.com/mcp

At a glance

Type: MCP server
Publisher: attestwire.com (verified by the MCP Registry)
Status: Working at last check
Tools: 14
Token cost: About 5,092 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 Cursor Add to VS Code VS 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 en16931 https://api.attestwire.com/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.en16931]
url = "https://api.attestwire.com/mcp"

Gemini CLI

{"mcpServers":{"en16931":{"httpUrl":"https://api.attestwire.com/mcp"}}}

Cursor

{"mcpServers":{"en16931":{"url":"https://api.attestwire.com/mcp"}}}

VS Code

{"servers":{"en16931":{"type":"http","url":"https://api.attestwire.com/mcp"}}}

Antigravity

agy mcp add en16931 https://api.attestwire.com/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":"en16931","server_url":"https://api.attestwire.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"en16931","server_url":"https://api.attestwire.com/mcp"}

Tools

check_french_readiness ~205 tokens
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 company exists and is active. It CANNOT confirm whether the company has registered with an approved platform — that lives only in the CAPTCHA-protected DGFiP annuair
check_vies_status ~193 tokens
Current availability of VIES, the European Commission service that validates EU VAT numbers. Per-member-state status, latency and 24h/7d uptime, from a monitor that polls all member states every 5 minutes. Use this when EU VAT number validation is failing, to tell "their VAT number is wrong" apart f
diagnose_invoice ~360 tokens
Explain local validation and supplied provider rejection/SVRL findings. Send exactly one of invoice (the JSON model) or xml (UBL/CII text, not a PDF). Revalidate caller-reviewed JSON edits or revised XML using the original hash and confirmed:true. Never invent business values or send an invoice. 1 d
explain_rule ~234 tokens
Explain one EN 16931 / XRechnung / Peppol BIS rule in plain English: what it requires, why, the business term it constrains, a concrete fix and an example. 321 rules explained — BR-*, BR-CO-*, BR-<category>-*, BR-DE-*, PEPPOL-EN16931-* and this library's own ATW-*. That is every rule id this validat
generate_invoice ~819 tokens
Generate compliant e-invoice XML from a JSON invoice, in either EN 16931 syntax. Profiles: en16931, xrechnung-ubl, peppol-bis-3, xrechnung-cii, facturx-en16931 — the profile chooses the syntax, and xrechnung-cii and facturx-en16931 come back as CII. The invoice is validated first and generation is r
get_recipient_profile ~470 tokens
From the buyer's country and one identifier (VAT ID, Leitweg-ID, SIREN/SIRET, KBO number, GLN or Peppol ID): the identifier checked; name and address from VIES or the French register when they give them; Peppol registration (SML/SMP, and the Directory card when there is one); and how to invoice: cha
get_upgrade_link ~372 tokens
Return a hosted checkout URL for upgrading an Attestwire key to a paid plan (Solo: 1,000 documents/month for €9/month; Starter: 5,000 for €29/month; Scale: 50,000 for €99/month (EUR, plus VAT where due)). THIS DOES NOT BUY ANYTHING. It creates a checkout link and charges nothing; a human must open t
issue_api_key ~279 tokens
Mint a free Attestwire API key (100 documents/month, no signup flow, no card) for the tools that need one. THE KEY IS RETURNED ONCE AND CANNOT BE RECOVERED — only its SHA-256 hash is stored — so show it to the user verbatim and tell them to save it before doing anything else. MINTING DOES NOT AUTHEN
list_approved_platforms ~136 tokens
The official list of Plateformes Agréées (PA, formerly PDP) that DGFiP has approved to transmit invoices under the French e-invoicing mandate, from the published open dataset. Optionally filtered by name or SIREN. FREE and needs no API key.
lookup_peppol_participant ~222 tokens
Read-only production lookup through OpenPeppol. Check advertised BIS Billing invoice or credit-note support and an optional invoice identifier mismatch. Does not send, verify delivery, or validate endpoint certificates. 1 document per conclusive result; unavailable is uncharged. The participant iden
send_feedback Sends messages · ~392 tokens
Tell the people who build this server what the user was trying to do. CALL IT when the user wanted something none of these tools does, when a result looked wrong or was confusing, or when you had to work around a tool. Describe the GOAL in your own words ("check a German public-sector invoice before
validate_invoice ~593 tokens
Validate an invoice, given as a JSON object, against EN 16931 and its national CIUS rule sets (XRechnung UBL/CII, Peppol BIS 3.0, Factur-X). Returns every failure as a "teaching error": the official rule id, the business term (BT-/BG-) it constrains, what the regulation actually requires, and a conc
validate_invoice_xml ~636 tokens
Validate an e-invoice FILE the user already has: a UBL 2.1 Invoice, a UBL 2.1 CreditNote, a UN/CEFACT CII CrossIndustryInvoice (invoices and credit notes alike), or a Factur-X or ZUGFeRD PDF. The file is read into the invoice model and EN 16931 plus the CIUS rules (XRechnung UBL and CII, Peppol BIS
verify_vat_vies ~181 tokens
Live VAT-number verification with dated evidence. Distinguishes valid, invalid, and unavailable; one bounded retry, no Attestwire cache. Sends the VAT number to the European Commission VIES service. 1 document per valid/invalid result; unavailable is uncharged. Not a tax determination. REQUIRES AN A

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