{
  "x402Version": 2,
  "id": 36292,
  "slug": "36292",
  "resource": "https://api.duoleads.com/v1/id/national",
  "description": "VAT, tax ID and national ID validator: check a national identity, tax or company registration number against its country's official checksum rule. Covers 23 countries including NL BSN, ES NIF/NIE/CIF, IT codice fiscale, FR SIREN/SIRET, DE Steuer-ID, BE/PL/CZ national numbers, SE/NO/DK/FI personal numbers, BR CPF/CNPJ, AU ABN/TFN, UK NINo, IE PPS, US NPI/EIN. Structure and check digit only, no registry lookup; the number is never stored (logs keep only its length and character types).",
  "type": "http",
  "serviceName": "Duo Data Utilities",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791433856/bazaar-icons/16212cbac45fe9af.png",
  "resourceType": "Monitoring",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "50000",
      "amountUsd": 0.05,
      "maxTimeoutSeconds": 120
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "data": {
            "properties": {
              "algorithm": {
                "type": "string"
              },
              "country": {
                "type": "string"
              },
              "derived": {
                "properties": {
                  "birth_date": {
                    "type": "string"
                  },
                  "birth_month": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "birth_year_yy": {
                    "type": "string"
                  },
                  "birthplace_code": {
                    "type": "string"
                  },
                  "century_assumed": {
                    "type": "boolean"
                  },
                  "department_code": {
                    "type": "string"
                  },
                  "sex": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "formatted": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "kind": {
                "type": "string"
              },
              "normalised": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "reason": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "valid": {
                "type": "boolean"
              }
            },
            "required": [
              "valid",
              "country",
              "kind",
              "algorithm",
              "normalised",
              "formatted",
              "reason",
              "derived"
            ],
            "type": "object"
          },
          "meta": {
            "properties": {
              "computed_at": {
                "description": "RFC 3339 UTC with milliseconds",
                "type": "string"
              },
              "deterministic": {
                "type": "boolean"
              },
              "disclaimer": {
                "type": "string"
              },
              "price_usd": {
                "type": "string"
              },
              "request_id": {
                "type": "string"
              },
              "sources": {
                "items": {
                  "required": [
                    "id",
                    "version",
                    "published"
                  ],
                  "type": "object"
                },
                "type": "array"
              }
            },
            "required": [
              "request_id",
              "computed_at",
              "price_usd",
              "deterministic",
              "disclaimer"
            ],
            "type": "object"
          },
          "ok": {
            "const": true
          },
          "route": {
            "const": "/v1/id/national"
          },
          "version": {
            "type": "string"
          }
        },
        "required": [
          "ok",
          "route",
          "version",
          "data",
          "meta"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "country": "NL",
            "kind": "bsn",
            "value": "111222333"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "data": {
              "algorithm": "elfproef-11",
              "country": "NL",
              "derived": {},
              "formatted": "111.222.333",
              "kind": "bsn",
              "normalised": "111222333",
              "reason": null,
              "valid": true
            },
            "meta": {
              "computed_at": "2026-09-28T12:00:00.000Z",
              "deterministic": true,
              "disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
              "price_usd": "0.05",
              "request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D"
            },
            "ok": true,
            "route": "/v1/id/national",
            "version": "1.0.0"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "country": {
                    "description": "ISO 3166-1 alpha-2 country code, case-insensitive. One of the 23 supported countries; the United Kingdom is accepted as UK or GB (the response echoes what you sent).",
                    "maxLength": 16,
                    "type": "string"
                  },
                  "kind": {
                    "description": "Identifier type for that country, e.g. bsn, nif, cf, cpf.",
                    "maxLength": 32,
                    "type": "string"
                  },
                  "value": {
                    "description": "The identifier. Separators (space . - /) are stripped before checking.",
                    "maxLength": 64,
                    "type": "string"
                  }
                },
                "required": [
                  "country",
                  "kind",
                  "value"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "data": {
                    "properties": {
                      "algorithm": {
                        "type": "string"
                      },
                      "country": {
                        "type": "string"
                      },
                      "derived": {
                        "properties": {
                          "birth_date": {
                            "type": "string"
                          },
                          "birth_month": {
                            "type": [
                              "number",
                              "null"
                            ]
                          },
                          "birth_year_yy": {
                            "type": "string"
                          },
                          "birthplace_code": {
                            "type": "string"
                          },
                          "century_assumed": {
                            "type": "boolean"
                          },
                          "department_code": {
                            "type": "string"
                          },
                          "sex": {
                            "type": "string"
                          }
                        },
                        "type": "object"
                      },
                      "formatted": {
                        "type": [
                          "string",
                          "null"
                        ]
                      },
                      "kind": {
                        "type": "string"
                      },
                      "normalised": {
                        "type": [
                          "string",
                          "null"
                        ]
                      },
                      "reason": {
                        "type": [
                          "string",
                          "null"
                        ]
                      },
                      "valid": {
                        "type": "boolean"
                      }
                    },
                    "required": [
                      "valid",
                      "country",
                      "kind",
                      "algorithm",
                      "normalised",
                      "formatted",
                      "reason",
                      "derived"
                    ],
                    "type": "object"
                  },
                  "meta": {
                    "properties": {
                      "computed_at": {
                        "description": "RFC 3339 UTC with milliseconds",
                        "type": "string"
                      },
                      "deterministic": {
                        "type": "boolean"
                      },
                      "disclaimer": {
                        "type": "string"
                      },
                      "price_usd": {
                        "type": "string"
                      },
                      "request_id": {
                        "type": "string"
                      },
                      "sources": {
                        "items": {
                          "required": [
                            "id",
                            "version",
                            "published"
                          ],
                          "type": "object"
                        },
                        "type": "array"
                      }
                    },
                    "required": [
                      "request_id",
                      "computed_at",
                      "price_usd",
                      "deterministic",
                      "disclaimer"
                    ],
                    "type": "object"
                  },
                  "ok": {
                    "const": true
                  },
                  "route": {
                    "const": "/v1/id/national"
                  },
                  "version": {
                    "type": "string"
                  }
                },
                "required": [
                  "ok",
                  "route",
                  "version",
                  "data",
                  "meta"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "deterministic",
    "no-api-key",
    "id",
    "identifiers",
    "validation",
    "bazaar"
  ],
  "sourceHost": "api.duoleads.com",
  "lastUpdated": "2026-10-11T00:37:31.691Z",
  "quality": {
    "calls30d": 3,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-10-11T00:37:31.491Z"
  },
  "metadata": {
    "serviceName": "Duo Data Utilities",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791433856/bazaar-icons/16212cbac45fe9af.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "country": "NL",
              "kind": "bsn",
              "value": "111222333"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "algorithm": "elfproef-11",
                "country": "NL",
                "derived": {},
                "formatted": "111.222.333",
                "kind": "bsn",
                "normalised": "111222333",
                "reason": null,
                "valid": true
              },
              "meta": {
                "computed_at": "2026-09-28T12:00:00.000Z",
                "deterministic": true,
                "disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
                "price_usd": "0.05",
                "request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D"
              },
              "ok": true,
              "route": "/v1/id/national",
              "version": "1.0.0"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "country": {
                      "description": "ISO 3166-1 alpha-2 country code, case-insensitive. One of the 23 supported countries; the United Kingdom is accepted as UK or GB (the response echoes what you sent).",
                      "maxLength": 16,
                      "type": "string"
                    },
                    "kind": {
                      "description": "Identifier type for that country, e.g. bsn, nif, cf, cpf.",
                      "maxLength": 32,
                      "type": "string"
                    },
                    "value": {
                      "description": "The identifier. Separators (space . - /) are stripped before checking.",
                      "maxLength": 64,
                      "type": "string"
                    }
                  },
                  "required": [
                    "country",
                    "kind",
                    "value"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "data": {
                      "properties": {
                        "algorithm": {
                          "type": "string"
                        },
                        "country": {
                          "type": "string"
                        },
                        "derived": {
                          "properties": {
                            "birth_date": {
                              "type": "string"
                            },
                            "birth_month": {
                              "type": [
                                "number",
                                "null"
                              ]
                            },
                            "birth_year_yy": {
                              "type": "string"
                            },
                            "birthplace_code": {
                              "type": "string"
                            },
                            "century_assumed": {
                              "type": "boolean"
                            },
                            "department_code": {
                              "type": "string"
                            },
                            "sex": {
                              "type": "string"
                            }
                          },
                          "type": "object"
                        },
                        "formatted": {
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "kind": {
                          "type": "string"
                        },
                        "normalised": {
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "reason": {
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "valid": {
                          "type": "boolean"
                        }
                      },
                      "required": [
                        "valid",
                        "country",
                        "kind",
                        "algorithm",
                        "normalised",
                        "formatted",
                        "reason",
                        "derived"
                      ],
                      "type": "object"
                    },
                    "meta": {
                      "properties": {
                        "computed_at": {
                          "description": "RFC 3339 UTC with milliseconds",
                          "type": "string"
                        },
                        "deterministic": {
                          "type": "boolean"
                        },
                        "disclaimer": {
                          "type": "string"
                        },
                        "price_usd": {
                          "type": "string"
                        },
                        "request_id": {
                          "type": "string"
                        },
                        "sources": {
                          "items": {
                            "required": [
                              "id",
                              "version",
                              "published"
                            ],
                            "type": "object"
                          },
                          "type": "array"
                        }
                      },
                      "required": [
                        "request_id",
                        "computed_at",
                        "price_usd",
                        "deterministic",
                        "disclaimer"
                      ],
                      "type": "object"
                    },
                    "ok": {
                      "const": true
                    },
                    "route": {
                      "const": "/v1/id/national"
                    },
                    "version": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "ok",
                    "route",
                    "version",
                    "data",
                    "meta"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "api.duoleads.com",
    "manifest_name": "api.duoleads.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "data": {
        "algorithm": "string",
        "country": "string",
        "derived": {
          "birth_date": "string",
          "birth_month": 0,
          "birth_year_yy": "string",
          "birthplace_code": "string",
          "century_assumed": true,
          "department_code": "string",
          "sex": "string"
        },
        "formatted": "string",
        "kind": "string",
        "normalised": "string",
        "reason": "string",
        "valid": true
      },
      "meta": {
        "computed_at": "string",
        "deterministic": true,
        "disclaimer": "string",
        "price_usd": "string",
        "request_id": "string",
        "sources": [
          {}
        ]
      },
      "ok": null,
      "route": null,
      "version": "string"
    },
    "type": "string"
  }
}