Schéma JSON : extraire une facture

JSON Schema pour extraire une facture avec un LLM : fournisseur, numéro, date, lignes, totaux HT, TVA et TTC. Prêt pour les sorties structurées.

Extrais les informations de la facture fournie. Les montants sont des nombres en euros, sans symbole. Si une information manque, ne l'invente pas.

JSON Schema

{
  "type": "object",
  "required": [
    "fournisseur",
    "date",
    "total_ttc"
  ],
  "properties": {
    "tva": {
      "type": "number"
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "Date d'émission (AAAA-MM-JJ)"
    },
    "lignes": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "libelle",
          "montant_ht"
        ],
        "properties": {
          "libelle": {
            "type": "string"
          },
          "quantite": {
            "type": "number"
          },
          "montant_ht": {
            "type": "number"
          }
        }
      }
    },
    "numero": {
      "type": "string",
      "description": "Numéro de la facture"
    },
    "total_ht": {
      "type": "number"
    },
    "total_ttc": {
      "type": "number"
    },
    "fournisseur": {
      "type": "string",
      "description": "Raison sociale du fournisseur"
    }
  }
}

Output example

{
  "fournisseur": "Imprimerie Martin SARL",
  "numero": "F-2026-0412",
  "date": "2026-09-15",
  "lignes": [
    {
      "libelle": "Cartes de visite x500",
      "quantite": 1,
      "montant_ht": 80.0
    },
    {
      "libelle": "Flyers A5 x1000",
      "quantite": 1,
      "montant_ht": 120.0
    }
  ],
  "total_ht": 200.0,
  "tva": 40.0,
  "total_ttc": 240.0
}

Estimated cost

Input tokens per call : ≈ 539

Input cost only, excluding the model's answer. Providers' public standard prices (Mistral AI, DeepSeek, OpenAI, Anthropic) converted from USD to euros at the ECB rate of September 29, 2026. Estimate: 1 token ≈ 3.6 characters.

Identifier

contextetech--extraire-une-facture

Type

Output schemas

File

extraire-une-facture.schema.json

Format

JSON (application/json)

Size

977 bytes

Encoding

UTF-8

Estimated tokens

≈ 271

Language

French

License

MIT

Commercial use

Allowed

Personal data

None

Version

1.0

Published on

October 1, 2026 at 6:46 PM

Updated on

October 1, 2026 at 6:46 PM

Storage

in database

Uses

0

Likes

0

extraire-une-facture.schema.json

{
  "type": "object",
  "required": [
    "fournisseur",
    "date",
    "total_ttc"
  ],
  "properties": {
    "tva": {
      "type": "number"
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "Date d'émission (AAAA-MM-JJ)"
    },
    "lignes": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "libelle",
          "montant_ht"
        ],
        "properties": {
          "libelle": {
            "type": "string"
          },
          "quantite": {
            "type": "number"
          },
          "montant_ht": {
            "type": "number"
          }
        }
      }
    },
    "numero": {
      "type": "string",
      "description": "Numéro de la facture"
    },
    "total_ht": {
      "type": "number"
    },
    "total_ttc": {
      "type": "number"
    },
    "fournisseur": {
      "type": "string",
      "description": "Raison sociale du fournisseur"
    }
  }
}

Anthropic API (Python)

import json, anthropic

schema = json.load(open("extraire-une-facture.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": "your input here"}])
print(resp.content[0].input)

OpenAI format (response_format)

{
  "type": "json_schema",
  "json_schema": {
    "name": "extraire-une-facture",
    "schema": {
      "type": "object",
      "required": [
        "fournisseur",
        "date",
        "total_ttc"
      ],
      "properties": {
        "tva": {
          "type": "number"
        },
        "date": {
          "type": "string",
          "format": "date",
          "description": "Date d'émission (AAAA-MM-JJ)"
        },
        "lignes": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "libelle",
              "montant_ht"
            ],
            "properties": {
              "libelle": {
                "type": "string"
              },
              "quantite": {
                "type": "number"
              },
              "montant_ht": {
                "type": "number"
              }
            }
          }
        },
        "numero": {
          "type": "string",
          "description": "Numéro de la facture"
        },
        "total_ht": {
          "type": "number"
        },
        "total_ttc": {
          "type": "number"
        },
        "fournisseur": {
          "type": "string",
          "description": "Raison sociale du fournisseur"
        }
      }
    },
    "strict": true
  }
}