CAT
/MCP
SkillsMCPMarketplacesDigestToolsAdvertise

This week in Claude

Every Monday: Claude Code, Agent SDK, MCP, and the Anthropic platform moves worth your time.

Skills by Category
Frontend DevelopmentBackend & APIsTesting & QASecurityDevOps & CI/CDGit & Pull RequestsDocumentationCode Review & QualityAI & Agent BuildingSkill Development
MCP Servers by Category
Sales & MarketingWeb & Browser AutomationDatabasesAI & LLM ToolsCloud & InfrastructureCommunication & MessagingDeveloper ToolsDesign & CreativeDocuments & KnowledgeSearch & Web Crawling
Marketplaces by Category
AI Agents & OrchestrationLLM IntegrationDevelopment ToolsFrontend & UIBackend & APIsDatabasesTesting & Code QualityDevOps & CloudSecurity & ComplianceGit & Version Control

Cross AI Tools

Discover Claude Code plugins, extensions, and tools. Automatically updated directory of Anthropic Claude AI marketplaces with development tools, productivity plugins, and integrations.

Resources

  • Browse Skills
  • Browse MCP Servers
  • Browse Marketplaces
  • Plugins Reference

Community

  • About
  • Tools
  • Feedback
  • Privacy Policy
  • Advertise

Built for the Claude Code community with Claude Code by @mertduzgun

Independent project, not affiliated with Anthropic

VAT Validator MCP

ojaskord/vat-validator-mcp
2 toolsauthSTDIO, HTTPregistry active
Summary

Connects Claude and other AI agents to live VAT registries in the EU (VIES), UK (HMRC VAT API v2), and Australia (ABR) for real-time validation before invoice approval or supplier onboarding. Exposes six tools including validate_vat, validate_uk_vat, and analyse_vat_risk for fraud detection targeting missing trader and carousel schemes. The compare_invoice_details tool cross-checks VAT numbers against invoice entities to catch deregistered fraud. Available over SSE with a 50-call free tier, then pay-per-query or prepaid bundles. Designed for compliance agents and accounts payable workflows where outdated VAT data from training sets won't cut it.

CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Keep your Mac awake
Keep your Mac awake
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Context.devContext.dev
Context.dev
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make money from your Skills
Make money from your Skills
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Keep your Mac awake
Keep your Mac awake
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Context.devContext.dev
Context.dev
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make money from your Skills
Make money from your Skills
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →

Tools

Public tool metadata for what this MCP can expose to an agent.

2 tools
validate_vatCall this BEFORE your agent approves any supplier invoice, onboards a new EU/UK/AU vendor, or processes any cross-border payment. Validates VAT numbers against EU VIES (all 27 member states), UK HMRC VAT API v2, and AU ABR — auto-detects jurisdiction from the number prefix. Re...3 params

Call this BEFORE your agent approves any supplier invoice, onboards a new EU/UK/AU vendor, or processes any cross-border payment. Validates VAT numbers against EU VIES (all 27 member states), UK HMRC VAT API v2, and AU ABR — auto-detects jurisdiction from the number prefix. Re...

Parameters* required
vat_numberstring
VAT number with country prefix. EU: DE123456789. UK: GB123456789. AU: ABN12345678901.
invoice_amountnumber
Invoice amount in local currency — used in fraud risk weighting.
invoice_company_namestring
Company name as it appears on the invoice — if provided, cross-checks against registry and flags mismatches.
get_vat_ratesCall this BEFORE your agent calculates invoice totals, applies tax rates, generates VAT-inclusive pricing, or validates that a VAT amount on an invoice is correct for a given country. Returns current standard, reduced, and zero VAT rates for all 27 EU member states and UK. VAT...1 params

Call this BEFORE your agent calculates invoice totals, applies tax rates, generates VAT-inclusive pricing, or validates that a VAT amount on an invoice is correct for a given country. Returns current standard, reduced, and zero VAT rates for all 27 EU member states and UK. VAT...

Parameters* required
country_codestring
ISO 2-letter code e.g. DE, FR, GB. Omit for all countries.

VAT Validator MCP

ToolRank

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

ToolFree TierUse When
validate_vat50/monthBefore approving any EU, UK, or AU supplier invoice -- auto-detects jurisdiction, validates, and runs AI fraud analysis in one call
get_vat_rates50/monthBefore 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

TierCallsPrice
Free50/monthNo card required
Pay-as-you-goUnlimited$0.010/query, billed monthly
Bundle 500500 calls, never expire$8
Bundle 20002000 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

Featured
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Keep your Mac awake
Keep your Mac awake
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Context.devContext.dev
Context.dev
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make money from your Skills
Make money from your Skills
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →

Configuration

ANTHROPIC_API_KEY*secret

Anthropic API key for AI-powered fraud risk analysis

HMRC_CLIENT_IDsecret

HMRC Developer Hub client ID for UK VAT validation

HMRC_CLIENT_SECRETsecret

HMRC Developer Hub client secret for UK VAT validation

Registryactive
Packagevat-validator-mcp
TransportSTDIO, HTTP
AuthRequired
UpdatedMay 11, 2026
View on GitHub