E-Invoice Checker MCP server
Remote Model Context Protocol server for European e-invoices: detect, parse, validate and render XRechnung, ZUGFeRD, Factur-X, Peppol BIS Billing 3.0, generic EN 16931 UBL/CII and Polish KSeF FA(3) invoices with the official KoSIT, OpenPeppol and KSeF rule sets. Same engine as einvoicechecker.com.
- Endpoint:
https://einvoicechecker.com/v1/mcp(Streamable HTTP, stateless) - Auth: optional API key,
Authorization: Bearer ek_…(free key, 100 requests/month). Without a key the anonymous rate limit applies (20 requests/min per IP). - Registry:
com.einvoicechecker/einvoicein the official MCP registry - Docs: https://einvoicechecker.com/mcp/
Tools
Input: content (invoice XML as text) or content_base64 (ZUGFeRD / Factur-X PDF or any invoice file, base64). Files up to 10 MB.
Invoices are processed in memory and discarded; nothing from the invoice content is stored.
Connect
Claude Code
claude mcp add --transport http einvoicechecker https://einvoicechecker.com/v1/mcp \
--header "Authorization: Bearer ek_YOUR_KEY"
Claude.ai / Claude Desktop: Settings → Connectors → Add custom connector → https://einvoicechecker.com/v1/mcp.
Cursor / Windsurf / VS Code (mcp.json):
{
"mcpServers": {
"einvoicechecker": {
"url": "https://einvoicechecker.com/v1/mcp",
"headers": { "Authorization": "Bearer ek_YOUR_KEY" }
}
}
}
stdio clients (via mcp-remote):
{
"mcpServers": {
"einvoicechecker": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://einvoicechecker.com/v1/mcp", "--header", "Authorization: Bearer ek_YOUR_KEY"]
}
}
}
Example prompts
- "Validate this XRechnung and tell me what the supplier has to fix" (paste the XML).
- "Extract the line items and VAT breakdown of this Factur-X PDF as a table."
- "Is this Peppol invoice compliant with BIS Billing 3.0? List fatal errors only."
- "Render this KSeF invoice as a PDF in English."
Pricing
Free tier 100 requests/month; Starter €24, Pro €49, Business €149 per month. Details: https://einvoicechecker.com/pricing/
Files in this repository
server.json: the registry manifest published to the official MCP registry.server-card.json: static server card also served at https://einvoicechecker.com/.well-known/mcp/server-card.json.
Terms: https://einvoicechecker.com/terms/ · Privacy: https://einvoicechecker.com/privacy/ · Support: [email protected]
