Esquema JSON: extraer una factura española

JSON Schema para extraer una factura española con un LLM: emisor y NIF, número, fecha, líneas, base imponible, IVA y total en euros.

Extrae los datos de la factura. Los importes son números en euros, sin símbolo. Si falta un dato, no lo inventes.

JSON Schema

{
  "type": "object",
  "required": [
    "emisor",
    "fecha",
    "total"
  ],
  "properties": {
    "fecha": {
      "type": "string",
      "format": "date",
      "description": "Fecha de expedición (AAAA-MM-DD)"
    },
    "total": {
      "type": "number"
    },
    "emisor": {
      "type": "string",
      "description": "Razón social del emisor"
    },
    "lineas": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "concepto",
          "importe"
        ],
        "properties": {
          "importe": {
            "type": "number"
          },
          "cantidad": {
            "type": "number"
          },
          "concepto": {
            "type": "string"
          }
        }
      }
    },
    "numero": {
      "type": "string",
      "description": "Número de factura"
    },
    "tipo_iva": {
      "type": "number",
      "description": "Porcentaje de IVA (21, 10 o 4)"
    },
    "cuota_iva": {
      "type": "number"
    },
    "nif_emisor": {
      "type": "string",
      "description": "NIF o CIF del emisor"
    },
    "base_imponible": {
      "type": "number"
    }
  }
}

Beispielausgabe

{
  "emisor": "Imprenta Gómez S.L.",
  "nif_emisor": "B12345678",
  "numero": "F-2026-0412",
  "fecha": "2026-09-15",
  "lineas": [
    {
      "concepto": "Tarjetas de visita x500",
      "cantidad": 1,
      "importe": 80.0
    },
    {
      "concepto": "Folletos A5 x1000",
      "cantidad": 1,
      "importe": 120.0
    }
  ],
  "base_imponible": 200.0,
  "tipo_iva": 21,
  "cuota_iva": 42.0,
  "total": 242.0
}

Geschätzte Kosten

Eingabe-Tokens pro Aufruf : ≈ 610

Nur Eingabekosten, ohne die Antwort des Modells. Öffentliche Standardpreise der Anbieter (Mistral AI, DeepSeek, OpenAI, Anthropic) von USD in Euro umgerechnet zum EZB-Kurs vom 29. September 2026. Schätzung: 1 Token ≈ 3,6 Zeichen.

Kennung

contextetech--extraer-factura-espanola

Typ

Ausgabeschemas

Datei

extraer-factura-espanola.schema.json

Format

JSON (application/json)

Größe

1.163 Bytes (1,1 KB)

Kodierung

UTF-8

Geschätzte Tokens

≈ 322

Sprache

Spanisch

Lizenz

MIT

Kommerzielle Nutzung

Erlaubt

Personenbezogene Daten

Keine

Version

1.0

Veröffentlicht am

3. Oktober 2026 um 05:20

Aktualisiert am

3. Oktober 2026 um 05:20

Speicherung

in der Datenbank

Nutzungen

0

Gefällt mir

0

extraer-factura-espanola.schema.json

{
  "type": "object",
  "required": [
    "emisor",
    "fecha",
    "total"
  ],
  "properties": {
    "fecha": {
      "type": "string",
      "format": "date",
      "description": "Fecha de expedición (AAAA-MM-DD)"
    },
    "total": {
      "type": "number"
    },
    "emisor": {
      "type": "string",
      "description": "Razón social del emisor"
    },
    "lineas": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "concepto",
          "importe"
        ],
        "properties": {
          "importe": {
            "type": "number"
          },
          "cantidad": {
            "type": "number"
          },
          "concepto": {
            "type": "string"
          }
        }
      }
    },
    "numero": {
      "type": "string",
      "description": "Número de factura"
    },
    "tipo_iva": {
      "type": "number",
      "description": "Porcentaje de IVA (21, 10 o 4)"
    },
    "cuota_iva": {
      "type": "number"
    },
    "nif_emisor": {
      "type": "string",
      "description": "NIF o CIF del emisor"
    },
    "base_imponible": {
      "type": "number"
    }
  }
}

Anthropic-API (Python)

import json, anthropic

schema = json.load(open("extraer-factura-espanola.schema.json"))
client = anthropic.Anthropic()
resp = client.messages.create(model="claude-sonnet-5", max_tokens=1024,
    tools=[{"name": "extraire", "description": "Renvoie les données extraites", "input_schema": schema}],
    tool_choice={"type": "tool", "name": "extraire"},
    messages=[{"role": "user", "content": "deine Eingabe hier"}])
print(resp.content[0].input)

OpenAI-Format (response_format)

{
  "type": "json_schema",
  "json_schema": {
    "name": "extraer-factura-espanola",
    "schema": {
      "type": "object",
      "required": [
        "emisor",
        "fecha",
        "total"
      ],
      "properties": {
        "fecha": {
          "type": "string",
          "format": "date",
          "description": "Fecha de expedición (AAAA-MM-DD)"
        },
        "total": {
          "type": "number"
        },
        "emisor": {
          "type": "string",
          "description": "Razón social del emisor"
        },
        "lineas": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "concepto",
              "importe"
            ],
            "properties": {
              "importe": {
                "type": "number"
              },
              "cantidad": {
                "type": "number"
              },
              "concepto": {
                "type": "string"
              }
            }
          }
        },
        "numero": {
          "type": "string",
          "description": "Número de factura"
        },
        "tipo_iva": {
          "type": "number",
          "description": "Porcentaje de IVA (21, 10 o 4)"
        },
        "cuota_iva": {
          "type": "number"
        },
        "nif_emisor": {
          "type": "string",
          "description": "NIF o CIF del emisor"
        },
        "base_imponible": {
          "type": "number"
        }
      }
    },
    "strict": true
  }
}