Connect

8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "validator": {
      "type": "http",
      "url": "https://api.zugferd-validator.de/mcp",
      "headers": {
        "X-Api-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

claude mcp add --transport http validator https://api.zugferd-validator.de/mcp --header "X-Api-Key: ${X_API_KEY}" --header "Authorization: ${X_API_KEY}"

[mcp_servers.validator]
url = "https://api.zugferd-validator.de/mcp"
env_http_headers = { "X-Api-Key" = "X_API_KEY", "Authorization" = "X_API_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "validator": {
      "type": "remote",
      "url": "https://api.zugferd-validator.de/mcp",
      "enabled": true,
      "headers": {
        "X-Api-Key": "{env:X_API_KEY}",
        "Authorization": "{env:X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "validator": {
      "type": "http",
      "url": "https://api.zugferd-validator.de/mcp",
      "headers": {
        "X-Api-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=validator&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLnp1Z2ZlcmQtdmFsaWRhdG9yLmRlL21jcCIsImhlYWRlcnMiOnsiWC1BcGktS2V5IjoiJHtYX0FQSV9LRVl9IiwiQXV0aG9yaXphdGlvbiI6IiR7WF9BUElfS0VZfSJ9fQ%3D%3D"
}

{
  "servers": {
    "validator": {
      "type": "http",
      "url": "https://api.zugferd-validator.de/mcp",
      "headers": {
        "X-Api-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "validator": {
      "httpUrl": "https://api.zugferd-validator.de/mcp",
      "headers": {
        "X-Api-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

extensions:
  "validator":
    enabled: true
    name: "validator"
    type: streamable_http
    uri: "https://api.zugferd-validator.de/mcp"
    headers:
      "X-Api-Key": "${X_API_KEY}"
      "Authorization": "${X_API_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_API_KEY}, ${X_API_KEY}. The registry never accepts secret values.

Quality 77 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: validate_invoice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); extract_xml (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_invoice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 2,127 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependencies67 · weight 15

pass
deps.known_vulnsno known advisory in 98 resolved packages
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
pass
deps.resolvable[email protected] resolved: 98 packages

5 tools, about 2,127 tokens to load them all · tool set 0a10f3d9c43b · checked 2026-10-20 15:57 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 93 / 100

provenance85

liveness100

freshness85

hygiene100

+repository +dns-namespace +website +reachable +uptime-99% ~updated-89d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] npm97 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.31.0`

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://api.zugferd-validator.de/mcp` streamable-http	api_key `${X_API_KEY}`	yes	99%	956 ms	2025-11-25	2026-10-20

package	registry	version	runtime	secrets
`zugferd-mcp-client`	npm	1.1.1	–	`ZUGFERD_API_KEY`

Tools (5)

`check_consistency`	Prüft ob die sichtbaren PDF-Daten mit den eingebetteten XML-Daten übereinstimmen.
`create_invoice`	Erstellt aus strukturierten Daten eine valide E-Rechnung — entweder als ZUGFeRD-PDF (PDF/A-3 mit eingebettetem XML) oder als reines XRechnung-XML (mit Leitweg-ID für B2G). Unterstützt mehrere Positionen, alle USt-Kategorien, Rabatte/Zuschläge und Zahlungsangaben. Stateless — es wird nichts gespeichert.
`extract_xml`	Extrahiert die eingebettete XML-Datei aus einem ZUGFeRD/Factur-X PDF.
`validate_invoice`	Validiert eine E-Rechnung (ZUGFeRD/Factur-X PDF oder XRechnung XML) gegen EN 16931 und gibt strukturierte Ergebnisse mit Korrekturvorschlägen zurück.
`validation_report`	Erzeugt aus einer E-Rechnung einen Validierungsbericht als PDF (PDF/A-3b) zum Ablegen und Weitergeben. Der Bericht nennt Ergebnis, alle Meldungen mit Regel-ID und Feld, den Prüfzeitpunkt, Format und Profil, die SHA-256-Prüfsumme der geprüften Datei sowie die Versionen der Prüfwerkzeuge. Auf Wunsch wird die geprüfte Rechnung sichtbar angehängt. Gibt das PDF base64-kodiert zurück. Ab dem Tarif Automatisieren.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "de.zugferd-validator/validator",
  "title": "ZUGFeRD Validator",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api.zugferd-validator.de/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-Api-Key",
          "isSecret": true,
          "isRequired": true,
          "description": "API-Key von https://zugferd-validator.de/konto (Demo-Key: zv_demo_public_zugferd_2026)"
        }
      ]
    }
  ],
  "version": "1.0.2",
  "packages": [
    {
      "version": "1.1.1",
      "transport": {
        "type": "stdio"
      },
      "identifier": "zugferd-mcp-client",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "ZUGFERD_API_KEY",
          "isSecret": true,
          "isRequired": true,
          "description": "API-Key von https://zugferd-validator.de/konto (Demo-Key: zv_demo_public_zugferd_2026)"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/tzatti1/zugferd-validator",
    "source": "github"
  },
  "websiteUrl": "https://zugferd-validator.de",
  "description": "Validiert E-Rechnungen (ZUGFeRD/Factur-X, XRechnung) gegen EN 16931 mit Korrekturvorschlägen."
}