VAT Validator MCP README
The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the VAT Validator MCP listing page.
VAT Validator MCP
AI-powered VAT fraud detection and live VAT number validation for AI agents.
Validates EU, UK, and AU VAT numbers against authoritative live sources and uses AI pattern analysis to detect invoice fraud before payment is authorised. Built for compliance agents, invoice processing workflows, and supplier onboarding pipelines.
What This Solves
VAT fraud costs EU businesses €50bn annually. The most common attack vectors — missing trader fraud, carousel fraud, deregistered entity re-use — share one common signal: a VAT number that looks valid but isn't registered to the entity on the invoice.
Claude and other LLMs cannot reliably check live VAT registration status from training data. This tool calls the authoritative sources directly:
- EU VIES — all 27 member states, real-time
- UK HMRC VAT API v2 — OAuth2, authoritative
- AU ABR — Australian Business Register
Tools
| Tool | Free Tier | Use When |
|---|---|---|
| validate_vat | 50/month | Before approving any EU, UK, or AU supplier invoice -- auto-detects jurisdiction, validates, and runs AI fraud analysis in one call |
| get_vat_rates | 50/month | Before calculating cross-border invoice totals |
Add to Your Agent
Claude Code — add to .mcp.json: { "mcpServers": { "vat-validator": { "type": "sse", "url": "https://vat-validator-mcp-production.up.railway.app/sse" } } }
LangChain: from langchain_mcp import MCPClient client = MCPClient( "https://vat-validator-mcp-production.up.railway.app/sse" )
OpenAI Agents SDK: from agents.mcp import MCPServerSse mcp_server = MCPServerSse( params={ "url": "https://vat-validator-mcp-production.up.railway.app/sse" } )
Pricing
| Tier | Calls | Price |
|---|---|---|
| Free | 50/month | No card required |
| Pay-as-you-go | Unlimited | $0.010/query, billed monthly |
| Bundle 500 | 500 calls, never expire | $8 |
| Bundle 2000 | 2000 calls, never expire | $28 |
Upgrade: https://kordagencies.com
Search Terms
VAT number validation · EU VAT check · VIES lookup · HMRC VAT verification · VAT fraud detection · invoice VAT compliance · missing trader fraud · carousel fraud detection · cross-border invoice check · supplier VAT screening · VAT registration verification · EU invoice compliance · AU ABR lookup · UK VAT API · invoice fraud detection API · supplier VAT fraud risk · accounts payable compliance agent · VAT invoice audit · AI invoice compliance · MCP VAT validation