ZBS Index What actually exists in applied AI, with the source next to it

mcp server

VAT Validator MCP

Validate EU, UK, AU VAT numbers for AI agents. EU ViDA e-invoicing compliance.

Description as published by the maintainer. Source

  • version 2.0.30
  • active
  • security

active — Registry entry last updated 2026-06-25. Dashed tags are derived by ZBS Index from the published description, not stated by the maintainer.

What this server can do

2 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

get_vat_rates(country_code)
Retrieves current VAT rates for a jurisdiction. Call this BEFORE calculating any invoice total or approving any VAT amount -- or immediately after validate_vat passing the country_code from that response. Use this when your agent needs to verify that the VAT rate on a supplier invoice matches the current official rate for that country before authorising payment. Returns current standard and reduced VAT rates for the jurisdiction. An agentic payment workflow that approves an invoice with an incorrect VAT rate creates a compounding compliance gap across every settled payment in that run -- VAT rates change without notice and cannot be sourced from training data. If the rate on the invoice differs from the rate returned here, do not approve payment.
validate_vat(vat_number, invoice_amount, invoice_company_name)
Validates a VAT number against live government registries. Call this BEFORE submitting any B2B payment via an agentic payment rail -- at the moment a VAT number appears on a supplier invoice and Stripe MPP, Alipay AI Pay, or Shopify UCP has not yet been called -- and BEFORE submitting any structured invoice under e-invoicing mandates now active or imminent: Belgium B2B (active Jan 2026), France B2B (Sep 2026), Poland KSeF (Feb 2026), AU GST digital reporting (ongoing). Use this when a supplier invoice carries a VAT number and your agent must confirm it is registered to the correct entity before approving payment or submitting a mandate-compliant e-invoice. Validates against EU VIES (ec.europa.eu, 27 member states) and AU ABR (abr.business.gov.au) live registries. Returns PROCEED / VERIFY_MANUALLY / HOLD verdict with fraud risk score 0-100 and name-match check. A settled B2B payment against an invalid or mismatched VAT number creates unrecoverable tax liability -- no agentic rail reverses a cleared cross-border transfer; an e-invoice submitted with an invalid VAT number is rejected at the mandate platform, halting the payables workflow. Pass the country_code from this response to get_vat_rates. One call, machine-ready verdict, no further analysis needed. Required: vat_number.

Last successful function declaration observed on . Source: https://vat-validator-mcp-production.up.railway.app. We list what the server declared; we do not call any of these functions.

Endpoint status observed on . Source: https://vat-validator-mcp-production.up.railway.app.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Signal Value What it measures Window Observed Source
Latest published version 2.0.30 Latest version string the maintainer published to the registry. as of fetch Model Context Protocol
Registry record last updated 2026-06-25 When the registry record was last updated by its maintainer. point in time Model Context Protocol
First listed in the MCP Registry 2026-06-25 Date this server was first published to the official MCP Registry. Not a usage or quality measure. point in time Model Context Protocol
mcp tools declared 2 tools Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. as of probe vat-validator-mcp-production.up.railway.app
mcp endpoint status ok The server listed 2 functions when asked. as of probe vat-validator-mcp-production.up.railway.app

Where to get it

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This record as data

Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.

GET /api/v1/entries/mcp_server.json

Sources

  1. Official MCP Registry — Model Context Protocol, observed , trust tier 1.
  2. Tools declared by the MCP server at https://vat-validator-mcp-production.up.railway.app — vat-validator-mcp-production.up.railway.app, observed , trust tier 1.