Einvoicewiz

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Generate & validate EN 16931 e-invoices (Factur-X, ZUGFeRD, XRechnung); verification certificates

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https://einvoicewiz.com/mcp

X-API-Key (optional)

einvoicewiz API key (eiw_...). Optional: agents can call the signup tool to get one with 20 free credits.

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check_credits

Credits remaining and calls used for an API key.

api_keystring

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Tools (7)

check_credits

Credits remaining and calls used for an API key.

Argument	Type	Description
api_key	string

Input schema (JSON)

{
  "type": "object",
  "title": "check_creditsArguments",
  "properties": {
    "api_key": {
      "type": "string",
      "title": "Api Key",
      "default": ""
    }
  }
}

create_facturx_pdf

Your existing PDF invoice + invoice JSON → Factur-X / ZUGFeRD PDF/A-3 with embedded XML (1 credit). pdf_base64: the original PDF, base64-encoded (max 15 MB). Returns {pdf_base64, cert_id, verify_url, credits_left}. The output is validated (EN 16931 + PDF/A-3) before delivery; failures are not charged.

Argument	Type	Description
api_key	string
invoice*	object
pdf_base64*	string

Input schema (JSON)

{
  "type": "object",
  "title": "create_facturx_pdfArguments",
  "required": [
    "pdf_base64",
    "invoice"
  ],
  "properties": {
    "api_key": {
      "type": "string",
      "title": "Api Key",
      "default": ""
    },
    "invoice": {
      "type": "object",
      "title": "Invoice",
      "additionalProperties": true
    },
    "pdf_base64": {
      "type": "string",
      "title": "Pdf Base64"
    }
  }
}

generate_einvoice_xml

Invoice JSON → validated EN 16931 CII XML (1 credit; failures free). profile: "en16931" (Factur-X/ZUGFeRD data, B2B) or "xrechnung" (German public sector; needs invoice.buyer_reference = Leitweg-ID and seller contact_email/contact_phone). Invoice schema: see https://einvoicewiz.com/openapi.json (required: invoice_number, issue_date, currency, seller{name,country}, buyer{name,country}, lines[{name,qty,unit_price,vat_rate}]). Returns {xml, validation, verify:{id,url}, credits_left}. On 422 the body lists the violated rules.

Argument	Type	Description
api_key	string
invoice*	object
profile	string

Input schema (JSON)

{
  "type": "object",
  "title": "generate_einvoice_xmlArguments",
  "required": [
    "invoice"
  ],
  "properties": {
    "api_key": {
      "type": "string",
      "title": "Api Key",
      "default": ""
    },
    "invoice": {
      "type": "object",
      "title": "Invoice",
      "additionalProperties": true
    },
    "profile": {
      "type": "string",
      "title": "Profile",
      "default": "en16931"
    }
  }
}

lookup_certificate

Look up a verification certificate (EIW-…) — free, no key. Confirms which file hashes passed validation and when.

Argument	Type	Description
cert_id*	string

Input schema (JSON)

{
  "type": "object",
  "title": "lookup_certificateArguments",
  "required": [
    "cert_id"
  ],
  "properties": {
    "cert_id": {
      "type": "string",
      "title": "Cert Id"
    }
  }
}

signup

Create an einvoicewiz API key with 20 free credits (no card). The key is shown once — store it.

Argument	Type	Description
email*	string

Input schema (JSON)

{
  "type": "object",
  "title": "signupArguments",
  "required": [
    "email"
  ],
  "properties": {
    "email": {
      "type": "string",
      "title": "Email"
    }
  }
}

validate_einvoice

Validate a Factur-X / ZUGFeRD / XRechnung file (PDF or XML, base64) against EN 16931 + KOSIT + PDF/A (1 credit). Returns the rule-level report {result:{status, errors[], warnings[], profile}, verify, credits_left}. verify is set only when the file passed.

Argument	Type	Description
api_key	string
file_base64*	string

Input schema (JSON)

{
  "type": "object",
  "title": "validate_einvoiceArguments",
  "required": [
    "file_base64"
  ],
  "properties": {
    "api_key": {
      "type": "string",
      "title": "Api Key",
      "default": ""
    },
    "file_base64": {
      "type": "string",
      "title": "File Base64"
    }
  }
}

which_format_do_i_need

Decision helper (free, no key): which e-invoice format a recipient needs and whether a plain PDF is still acceptable.

Argument	Type	Description
recipient_country*	string
recipient_is_public_authority	boolean

Input schema (JSON)

{
  "type": "object",
  "title": "which_format_do_i_needArguments",
  "required": [
    "recipient_country"
  ],
  "properties": {
    "recipient_country": {
      "type": "string",
      "title": "Recipient Country"
    },
    "recipient_is_public_authority": {
      "type": "boolean",
      "title": "Recipient Is Public Authority",
      "default": false
    }
  }
}