# io.github.makririch/einvoice (npm · einvoice-mcp)

XRechnung & ZUGFeRD: create, validate, and convert German e-invoices. EN 16931 compliant.

- Trust score: 65/100 (medium)
- Change this week: +21
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `einvoice-mcp`: 65/100 (this document), [markdown](https://verifymcp.io/servers/makririch-einvoice/einvoice-mcp.md), [page](https://verifymcp.io/servers/makririch-einvoice/einvoice-mcp)

## Channel facts

- Registry: `npm`
- Package: `einvoice-mcp`
- Version: `0.1.3`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (103 of 107), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (103 of 107), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 111 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 56/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 954 tokens (~159/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add makririch-einvoice -- npx -y einvoice-mcp
```

### Codex

```bash
codex mcp add makririch-einvoice -- npx -y einvoice-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "makririch-einvoice": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "einvoice-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add makririch-einvoice --command npx --arg -y --arg einvoice-mcp
```

### Hermes

```yaml
mcp_servers:
  makririch-einvoice:
    command: "npx"
    args: ["-y", "einvoice-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "makririch-einvoice": {
      "command": "npx",
      "args": [
        "-y",
        "einvoice-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 65, +4)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 61, +37)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Security disclosure: fail → unverified
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Schema quality: unverified → good
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional] Licence: MIT

### 2026-08-01 (score 24, +17)

- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional regression] Dependency health: partial → unverified
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Tool coverage: unverified → 100

### 2026-07-31 (score 7, −37)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 44, +20)

- [functional improvement] Tool coverage: unverified → 100

### 2026-07-28 (score 24, −20)

- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-27 (score 44)

First indexed and scored.

## MCP tools (6)

### `validate_invoice` (~114 tokens)

Prueft ob XML eine gueltige E-Rechnung (XRechnung/ZUGFeRD) ist. Validiert Syntax, Pflichtfelder und deutsche Business-Regeln (BR-DE). Validates e-invoice XML.

Input parameters:

- `base64` (string): Base64-kodierte XML-Datei
- `level` (string): Validierungstiefe: syntax=well-formed, schema=Struktur, full=inkl. BR-DE-Regeln
- `xml` (string): E-Rechnung XML als String

### `extract_data` (~69 tokens)

Extrahiert strukturierte Daten aus einer E-Rechnung (UBL-XML oder CII-XML). Extracts structured data from an e-invoice XML.

Input parameters:

- `base64` (string): Base64-kodierte XML-Datei
- `xml` (string): E-Rechnung XML als String

### `get_format_info` (~97 tokens)

Gibt Informationen ueber E-Rechnungs-Formate, Pflichtfelder, Steuer-Kategorien, Einheiten-Codes und gesetzliche Fristen zurueck. Useful reference for creating valid invoices.

Input parameters:

- `format` (string): Welches Format abfragen
- `topic` (string): overview=Formatbeschreibung, required_fields=Pflichtfelder, tax_categories=USt-Kategorien, unit_codes=Einheiten, deadlines=Fristen

### `create_xrechnung` (~307 tokens)

Erstellt eine XRechnung (UBL 2.1 XML) aus strukturierten Daten. Konform zu EN 16931 + XRechnung 3.0.2. Creates a valid XRechnung XML from structured data.

Input parameters:

- `bankName` (string): Name der Bank
- `bic` (string): BIC
- `buyer` (object, required): Rechnungsempfaenger
- `buyerReference` (string): Leitweg-ID oder Kaeufer-Referenz (BT-10, Pflicht in XRechnung)
- `currency` (string): Waehrung (ISO 4217)
- `dueDate` (string): Faelligkeitsdatum (YYYY-MM-DD)
- `iban` (string): IBAN fuer Zahlung
- `invoiceNumber` (string, required): Rechnungsnummer (eindeutig)
- `issueDate` (string, required): Rechnungsdatum (YYYY-MM-DD)
- `lineItems` (array, required): Rechnungspositionen
- `note` (string): Freitext-Bemerkung
- `orderReference` (string): Bestellnummer des Kaeufers (BT-13)
- `paymentMeansCode` (string): Zahlungsart: 30=Ueberweisung, 58=SEPA-Ueberweisung, 59=SEPA-Lastschrift
- `paymentTerms` (string): Zahlungsbedingungen (z.B. 'Zahlbar innerhalb von 30 Tagen')
- `seller` (object, required): Rechnungssteller

### `create_zugferd` (~237 tokens)

Erstellt ZUGFeRD 2.3 CII XML (Factur-X). Returns CII XML for embedding into PDF/A-3. Creates ZUGFeRD-compatible e-invoice XML in CII format.

Input parameters:

- `bic` (string): BIC
- `buyer` (object, required): Rechnungsempfaenger
- `buyerReference` (string): Leitweg-ID / Kaeufer-Referenz (BT-10)
- `currency` (string): Waehrung (ISO 4217)
- `dueDate` (string): Faelligkeitsdatum (YYYY-MM-DD)
- `iban` (string): IBAN fuer Zahlung
- `invoiceNumber` (string, required): Rechnungsnummer (eindeutig)
- `issueDate` (string, required): Rechnungsdatum (YYYY-MM-DD)
- `lineItems` (array, required): Rechnungspositionen
- `note` (string): Freitext-Bemerkung
- `orderReference` (string): Bestellnummer des Kaeufers (BT-13)
- `paymentTerms` (string): Zahlungsbedingungen
- `seller` (object, required): Rechnungssteller

### `convert_format` (~130 tokens)

Konvertiert E-Rechnungen zwischen UBL (XRechnung), CII (ZUGFeRD) und JSON. Converts e-invoices between formats: ubl_to_cii, cii_to_ubl, ubl_to_json, cii_to_json, json_to_ubl, json_to_cii.

Input parameters:

- `direction` (string, required): Konvertierungsrichtung
- `input` (string, required): Input-Daten: XML-String fuer ubl/cii, JSON-String fuer json
- `validate_output` (boolean): Output nach Konvertierung validieren (nur fuer XML-Output)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/makririch-einvoice/einvoice-mcp#diagnostics

## Score history

- 2026-08-03: 65
- 2026-08-02: 61
- 2026-08-01: 24
- 2026-07-31: 7
- 2026-07-30: 44
- 2026-07-28: 24
- 2026-07-27: 44

## Links

- npm package: https://www.npmjs.com/package/einvoice-mcp
- Socket report: https://socket.dev/npm/package/einvoice-mcp
- Repository: https://github.com/makririch/einvoice-mcp
- Changelog RSS feed: https://verifymcp.io/servers/makririch-einvoice/einvoice-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/makririch-einvoice/einvoice-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/makririch-einvoice/einvoice-mcp