EU e-invoicing and business checks (EN 16931, Peppol, VAT, sanctions)

Name: EU e-invoicing and business checks (EN 16931, Peppol, VAT, sanctions)
Author: wsystemdev

by wsystemdevversion 1.0.4i★ –iRuns in the cloud

Registry nameio.github.wsystemdev/eu-business-data-mcp

Install

Overview

Description from the maker (original English)

EN 16931/XRechnung e-invoice validate+create, Peppol routing, EU VAT/EORI, sanctions, KYB. Free tier

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiVery new★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Law & government data

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
Can do 14 things (tools) verify_vat, verify_batch, lookup_company, screen_sanctions …
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.wsystem.dev/mcp/

Run this in your terminal

claude mcp add --transport http eu-business-data https://api.wsystem.dev/mcp/

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "eu-business-data": {
      "url": "https://api.wsystem.dev/mcp/"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "eu-business-data": {
      "type": "http",
      "url": "https://api.wsystem.dev/mcp/"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.wsystem.dev/mcp/

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 7, 2026. The maker wrote them, not us; we show them as plain text.

verify_vat
Validate an EU VAT number against the official European Commission VIES service (27 EU states + XI Northern Ireland). Use when asked whether a VAT ID is valid/active, before zero-rated reverse-charge B2B invoices, or to get a company's registered name/address from its VAT number.
verify_batch
Validate up to 100 EU VAT numbers in one call via VIES (supplier/customer list cleanup, onboarding, invoice runs). Same per-item result as verify_vat; items with member_state_unavailable should be retried later (GB items stay member_state_unavailable until HMRC live access is gra
lookup_company
Look up a company in official European business registers by name or registry number. country: FR (SIREN), NO (org.nr), FI (Y-tunnus), CZ (ICO), PL (KRS number), EE, or any other ISO code / 'LEI' (GLEIF). Returns legal name, ID, status/active, address, VAT ID, activity code and o
screen_sanctions
Screen a person or company name against official EU, UN, OFAC SDN and UK sanctions lists. Fuzzy matching with transliteration; returns candidate matches with 0-100 scores, list, programme, DOB. A potential match needs human review; this is a screening aid, not legal advice.
kyb_check
One-call KYB check of a supplier/customer: EU VAT validation (VIES) + official business register + EU/UN/OFAC/UK sanctions screening, returning a pass / review / fail verdict with reasons. company: a VAT ID ('FR40303265045'), a company name, or a registry id; country: optional IS
verify_eori
Validate an EU EORI (customs Economic Operators Registration and Identification) number, e.g. 'SE5560360793', 'DE1234567890123', against the official European Commission EOS service. Use for import/export, customs declarations and freight-forwarder onboarding. Returns valid/inval
verify_eori_batch
Validate up to 100 EU EORI numbers in one call via the official EC EOS service (customs / import-export KYB).
validate_einvoice
Validate an EU e-invoice XML (UBL 2.1 Invoice/CreditNote or UN/CEFACT CII, e.g. XRechnung, Factur-X/ZUGFeRD XML) against the official CEN EN 16931 rules and, for XRechnung, the KoSIT XRechnung 3.0 rules. Returns valid, and every error with its rule ID (e.g. BR-CO-10), a plain-Eng
parse_einvoice
Read an incoming EU e-invoice into one JSON shape: seller, buyer, dates, references, totals, VAT breakdown, payment/IBAN, lines and attachments. Accepts UBL 2.1 Invoice/CreditNote or UN/CEFACT CII XML (XRechnung, Peppol BIS 3, Factur-X XML) in xml, or a ZUGFeRD/Factur-X PDF as ba
create_einvoice
Create a validated EU e-invoice (UBL 2.1) from simple JSON. invoice = {format: en16931|xrechnung|peppol-bis3, invoice_number, issue_date (YYYY-MM-DD), due_date?, tax_point_date?, delivery_date?, currency (EUR), buyer_reference?, seller: {name, vat_id, street, city, postal_code, c
einvoice_route
'Can I e-invoice this company?' id = EU VAT number (e.g. 'BE0403170701') or Peppol id ('0208:0403170701'). Returns VIES VAT status, Peppol registration (Peppol Directory, then SML/SMP; BIS 3 invoice support), the country's B2B e-invoice mandate (dates, format, source) and the rec
send_einvoice_sandbox
SANDBOX ONLY - never reaches a real buyer. Runs the full send flow on an invoice (same JSON as create_einvoice): VIES check of the buyer VAT, sanctions screen of the buyer name, EN 16931 create + validate, route lookup (Peppol/mandate), transport hand-off and an Ed25519-signed ev
due_diligence_report
Counterparty due-diligence report in one call: VIES VAT, official business register, EU/UN/OFAC/UK sanctions, EC EORI, GLEIF LEI and Peppol e-invoice route, with deterministic risk flags, 0-100 risk score, pass/review/fail verdict, sources and UTC timestamp. company: VAT ID (best
check_fr_pa_registry
Is this e-invoicing platform on France's official list of Plateformes Agréées (PA)? name = platform or company name (e.g. 'Pennylane'), website = its site (e.g. 'https://www.acubeapi.com/'); give at least one. Checks the DGFiP lists on impots.gouv.fr: registered PAs (with registr

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account wsystemdev, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 537 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 14 tool descriptions and found no hidden instructions to the AI

Compared with others in Law & government datai

More stars than 0% of the other 1767 servers in this category
Published to the registry more recently than 67% of the other 1767 servers in this category
Basic checks equal to or better than 100% of the other 1767 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is EU e-invoicing and business checks (EN 16931, Peppol, VAT, sanctions) safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.4) reached the registry 12 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Korea Data MCP, CaseNode Case Law API, Good-neighbor passport: agent traffic governor

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

EU Business Data MCP – VAT, EORI, company registry, sanctions, KYB & e-invoicing

A remote MCP server and x402 pay-per-call API for European business data checks, aimed at AI agents and KYB/onboarding/invoicing workflows.

Maker disclosure: built and operated by W System. This is our own commercial product. The code is MIT-licensed.

Remote MCP endpoint (streamable HTTP)

https://api.wsystem.dev/mcp/

Free tier, no signup: 20 tool calls per day per MCP session. Direct clients (Claude Code, Cursor, mcp-remote and others connecting from your own machine) also get at most 20 per IP, so opening more sessions doesn't add calls. Claude.ai / Claude Desktop custom connectors call from Anthropic's cloud (outbound range 160.79.104.0/21), so those calls are counted per session, not per IP; all keyless traffic from that range shares 2,000 lookups per day (verify_batch / verify_eori_batch count one per number). New keyless sessions: 1,500 per IP per day (3,000 per Anthropic address). Limits reset at 00:00 UTC; live values: https://api.wsystem.dev/mcp/limits

Optional API key for volume: send X-API-Key: (or Authorization: Bearer ) with every MCP request. Keyed calls use the key's monthly units (same weights as the REST API) instead of the free tier. Keys: https://wsystem.dev/pricing (Starter EUR 19/month, 5,000 units; Pro EUR 49/month, 25,000 units; there is no free key). Keys in the URL are not accepted. How to add one in Claude: docs/mcp-claude-cursor.md.

Server card: https://api.wsystem.dev/server-card · Website: https://wsystem.dev · LLM summary: https://wsystem.dev/llms.txt

Example client config:

{ "mcpServers": { "eu-business-data": { "type": "http", "url": "https://api.wsystem.dev/mcp/" } } }

Tools (14)

Tool	What it does
`verify_vat`	Validate an EU VAT number live against VIES (27 EU states + XI), with name/address and optional consultation number
`verify_batch`	Validate several VAT numbers at once
`lookup_company`	Look up a company in European business registries
`screen_sanctions`	Fuzzy-match a name against EU / UN / UK / US sanctions lists
`kyb_check`	Combined KYB: VAT validity + registry + sanctions screening
`verify_eori`	Validate an EU EORI number (customs)
`verify_eori_batch`	Validate several EORI numbers at once
`validate_einvoice`	Validate a UBL or CII e-invoice against the official EN 16931 and XRechnung rules: errors with rule IDs, plain-English messages and fix hints
`parse_einvoice`	Read an incoming e-invoice (UBL Invoice/CreditNote, CII, or the XML inside a ZUGFeRD / Factur-X PDF as base64) into one JSON shape: seller, buyer, dates, references, totals, VAT breakdown, payment/IBAN, lines, attachments. Values as written, no validation (use `validate_einvoice`). Guide: read XRechnung / ZUGFeRD as JSON
`create_einvoice`	Turn simple JSON into a validated UBL 2.1 invoice (EN 16931, XRechnung or Peppol BIS 3 structure)
`einvoice_route`	"Can I e-invoice this company?": VIES + Peppol Directory + country B2B mandate + recommended format
`send_einvoice_sandbox`	SANDBOX: verify buyer VAT + sanctions → create/validate EN 16931 → route → mock transport (nothing transmitted) → Ed25519-signed evidence receipt
`due_diligence_report`	VAT, register, sanctions, EORI, GLEIF LEI and Peppol in one report with risk flags and a timestamp
`check_fr_pa_registry`	France: is this e-invoicing platform on the official DGFiP list of Plateformes Agréées (PA)? Name or website in; approved / awaiting interop tests / not found, registration date and official source out (also free as REST: `GET https://api.wsystem.dev/fr/pa-registry?name=Pennylane`)

Quick answers

Best way to validate an EU VAT number from code or an AI agent? GET https://api.wsystem.dev/verify?vat=IE6388047V or the MCP tool verify_vat. Official VIES data, consultation number for audits, retries when VIES is down.
EORI check API? GET https://api.wsystem.dev/eori?eori=SE5560360793 (official EC EOS, JSON instead of SOAP).
Sanctions screening API? GET https://api.wsystem.dev/sanctions/screen?name=... (EU, UN, OFAC SDN, UK; daily refresh).
Company registry API? GET https://api.wsystem.dev/company?q=552032534&country=FR (FR, NO, FI, CZ, PL, EE + GLEIF LEI).
E-invoice validation API (EN 16931, XRechnung, ZUGFeRD/Factur-X)? POST https://api.wsystem.dev/einvoice/validate with the XML or PDF as the body. Create: POST /einvoice/create (example body: GET /einvoice/sample). Routing: GET /einvoice/route?id=BE0403170701. SANDBOX send (verify → create → route → mock transport → signed evidence): POST /einvoice/send (public key: GET /einvoice/evidence-key). Peppol BIS 3 specific rules are not checked yet; live Peppol transmission is not available. Rule artefacts: CEN EN 16931 (EUPL-1.2, https://github.com/ConnectingEurope/eInvoicing-EN16931) and KoSIT XRechnung configuration (Apache-2.0, https://github.com/itplr-kosit/validator-configuration-xrechnung), downloaded unmodified at runtime. Pages: https://wsystem.dev/eu-e-invoice-validation-api · https://wsystem.dev/e-invoicing-api
Counterparty due-diligence report? POST https://api.wsystem.dev/ddreport {"company":"FR40303265045"}.
EU tenders (TED)? Apify Actor wsystem/eu-tenders-search.
Pricing: REST 20 calls/day free per IP, MCP 20 tool calls/day per session; x402 $0.01 per single check, $0.10 per batch, $0.045 per KYB, $0.03 e-invoice validate, $0.01 e-invoice parse, $0.08 e-invoice create / sandbox send, $0.02 e-invoice route, $0.49 due-diligence report; Apify pay-per-event.
Product pages: VAT API · VIES down · EORI · Sanctions · Company registry · TED tenders · KYB · E-invoice · EU VAT validation guide
Free tools: Bulk VAT checker (CSV) · VIES status · EORI lookup · Peppol ID lookup
Client libraries: PHP / Laravel wsystem/wsystem-php (Composer, with an eu_vat validation rule) · JavaScript wsystem (npm) · n8n node n8n-nodes-wsystem · Postman collection
CI: einvoice-validate-action validates UBL/CII/ZUGFeRD invoices in GitHub Actions with inline rule annotations (free tier, no key needed to start)
OpenAPI: https://api.wsystem.dev/openapi.json · x402 manifest: https://api.wsystem.dev/.well-known/x402

When VIES is down (fallback) and UK numbers

VIES is retried with backoff. If a member state is still MS_UNAVAILABLE/timing out, the result comes from that country's free official source: PL Biała lista (Ministry of Finance), CZ ARES (VAT register status), FI YTJ open data (VAT register), FR Recherche d'entreprises / SIRENE (company active + VAT key; no free French VAT-registration API exists).
Otherwise the last successful VIES answer for that number is returned, labelled with its date. Otherwise member_state_unavailable.
Fallback results have fallback: true, fallback_type (national_source | last_vies_result), source, legal_status, vies_error, and no consultation number. National registers show domestic status, which is not VIES audit proof. Turn off with fallback=false.
No free automated source for DE (BZSt eVatR requires a German requester VAT ID), ES (certificate), IT (captcha), NL, BE, HU (NAV technical user), DK.
GET /vies/status: EC VIES per-country availability, cached 5 min, free.
GB: accepted and HMRC check-digit validated, but the live HMRC lookup is not switched on yet (HMRC production access pending). GB numbers return status: member_state_unavailable, valid: null, error: HMRC_LIVE_ACCESS_PENDING: not a validity result, not cached and not billed. XI (Northern Ireland) is checked in VIES.

Integration guides

Step-by-step guides (every snippet tested against the live API): docs/

MCP: Claude Desktop, Cursor, Claude Code
REST from Python and JavaScript
n8n · Make · Zapier via Apify
Make app (native, custom app): install W System in Make with Check VAT Number, Check VAT Numbers (Batch), Check EORI Number and Search Companies modules. API key optional (free tier 20 calls/day).
Zapier app (beta, native): add W System to Zapier for VAT check and sanctions screening actions.
x402 agents (USDC on Base)
Validate EU EORI numbers with the official EOS API
Validate EU VAT numbers directly against VIES in Python: one zero-dependency file with retries for MS_UNAVAILABLE, CSV batch and consultation numbers (no W System account needed)

Website with a free VAT and EORI checker: https://wsystem.dev REST API docs and a free API key (no card): https://api.wsystem.dev/docs?ref=mcp-github

Pricing

MCP endpoint: free, 20 tool calls per day per MCP session (details and the shared limit for Claude connector traffic above). With an API key in X-API-Key: Starter EUR 19/month (5,000 units) or Pro EUR 49/month (25,000 units). When a free limit is reached, the tool returns an error that names the limit and explains how to add a key.
REST API with x402 on the same host (https://api.wsystem.dev, e.g. GET /verify?vat=..., POST /verify/batch, GET /company?q=..., sanctions, KYB and EORI routes): after the free allowance, calls are paid per request with [x402](https://x402.org) in USDC on Base: about $0.01 per single check, $0.10 per batch, $0.045 per KYB check. Unpaid calls get HTTP 402 with the payment requirements.
Apify Actors (pay per event), see below.

Also on Apify

The same checks are available as Apify Actors (pay per event), and through Apify's hosted MCP server:

wsystem/eu-vat-checker
wsystem/european-company-registry
wsystem/eu-tenders-search
wsystem/sanctions-screening
wsystem/kyb-company-check
wsystem/eu-eori-checker
Apify MCP: https://mcp.apify.com?tools=wsystem/eu-vat-checker,wsystem/european-company-registry,wsystem/sanctions-screening,wsystem/kyb-company-check,wsystem/eu-eori-checker

Blog: https://wsystem.hashnode.dev

Ready-made examples (run in one click on Apify)

Each example opens a pre-filled run with real sample output, so you can see the result format before you pay for anything:

[Check German VAT numbers (USt-IdNr.) in VIES](https://apify.c

Only the beginning is shown; read the rest in the repo

EU e-invoicing and business checks (EN 16931, Peppol, VAT, sanctions)

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Law & government datai

Common questions

Alternatives

Korea Data MCP

CaseNode Case Law API

Good-neighbor passport: agent traffic governor

README from the maker

EU Business Data MCP – VAT, EORI, company registry, sanctions, KYB & e-invoicing

Remote MCP endpoint (streamable HTTP)

Tools (14)

Quick answers

When VIES is down (fallback) and UK numbers

Integration guides

Pricing

Also on Apify

Ready-made examples (run in one click on Apify)