# E-Invoice Checker

> Validate, parse and render EU e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS 3.0, KSeF.

- name: com.einvoicechecker/einvoice
- version: 1.0.2
- connection class: R0 (autonomous)
- trust: 96/100
- quality: 73/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.einvoicechecker%2Feinvoice
- tools: https://api.protogrid.dev/v1/servers/com.einvoicechecker%2Feinvoice/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "einvoice": {
      "type": "http",
      "url": "https://einvoicechecker.com/v1/mcp",
      "headers": {
        "Authorization": "Bearer ${EINVOICE_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${EINVOICE_TOKEN}`.

## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 85
- drivers: +repository +dns-namespace +website +reachable +uptime-100% +updated-6d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 73/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: validate_invoice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); render_invoice_html (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); parse_invoice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,424 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 6 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 8, about 1,424 tokens to load them all
- tool set hash: 392910be14db24917f63399e9ed3a7c3
- tools last changed: 2026-10-16T14:17:47.820Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.einvoicechecker/einvoice.svg)](https://protogrid.dev/servers/com.einvoicechecker/einvoice)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-16 `render_invoice_pdf` changed (inputSchema)
- 2026-10-16 `render_invoice_html` changed (inputSchema)
- 2026-10-16 `validate_invoice` changed (description)
  - before: Run the official rule set for the detected format (KoSIT for XRechnung/ZUGFeRD/Factur-X, OpenPeppol for Peppol BIS, FA(3) schema for KSeF). Returns valid/invalid with every failed rule: id, severity, message, XPath.
  - after: Run the official rule set for the detected format (KoSIT for XRechnung/ZUGFeRD/Factur-X, OpenPeppol for Peppol BIS, FA(3) schema for KSeF, Porezna uprava HR-CIUS schematron for Croatian eRačun, Facturae XSD + calculation/NIF/DIR3 rules for Spain, LHDN SDK rules for MyInvois). Returns valid/invalid with every failed rule: id, severity, message, XPath.
- 2026-10-15 `fix_invoice` added
  - Fix validation errors of an EN 16931 invoice (XRechnung, Peppol BIS, ZUGFeRD/Factur-X XML, UBL, CII) deterministically: empty elements, decimals, date and code formats, specification ids; with totals=true also recalculates totals and the VAT breakdown from the lines. Data that is not in the file (Leitweg-ID, seller contact, endpoint ids, payment terms) is taken from "values"; missing ones are listed in needs_input. Returns the change list, the remaining errors and the corrected XML. Counts as 2 requests.

Full history: https://api.protogrid.dev/v1/servers/com.einvoicechecker%2Feinvoice/changes

## Remotes

- https://einvoicechecker.com/v1/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (8)

- `detect_invoice`: Identify the format, syntax, profile/customization and country standard of an e-invoice file. Cheap first step before validating.
- `fix_invoice`: Fix validation errors of an EN 16931 invoice (XRechnung, Peppol BIS, ZUGFeRD/Factur-X XML, UBL, CII) deterministically: empty elements, decimals, date and code formats, specification ids; with totals=true also recalculates totals and the VAT breakdown from the lines. Data that is not in the file (Leitweg-ID, seller contact, endpoint ids, payment terms) is taken from "values"; missing ones are listed in needs_input. Returns the change list, the remaining errors and the corrected XML. Counts as 2 requests.
- `list_supported_formats`: Which formats, profiles and rule sets this service supports, and what each tool costs.
- `my_usage`: Plan, monthly quota, usage this month and subscription state of the API key used for this connection. Free.
- `parse_invoice`: Extract the invoice as normalised JSON: number, dates, seller, buyer, lines, VAT breakdown, totals, payment details. Works for every supported format.
- `render_invoice_html`: Human-readable invoice document (HTML, A4 print layout) from the XML, in the requested language.
- `render_invoice_pdf`: Human-readable PDF of the invoice (counts as 2 requests). Returned as a base64 resource.
- `validate_invoice`: Run the official rule set for the detected format (KoSIT for XRechnung/ZUGFeRD/Factur-X, OpenPeppol for Peppol BIS, FA(3) schema for KSeF, Porezna uprava HR-CIUS schematron for Croatian eRačun, Facturae XSD + calculation/NIF/DIR3 rules for Spain, LHDN SDK rules for MyInvois). Returns valid/invalid with every failed rule: id, severity, message, XPath.