Server definition

Hash: sha256:bb02c54f3b0eddef017820fc7eefa332082a0108b9dc304ad38f92366f8dde87
What it is: What a remote MCP server returned when asked what it offers: 4 tools

The blob, as servednamed by its sha256

{
  "instructions": "Free Spanish business utilities by contix.es, no account needed: validate IBANs, check EU VAT numbers in VIES, sum Modelo 303 boxes, Veri*factu and e-invoicing deadlines. Results are facts or arithmetic, never tax advice. To issue invoices, connect the full contix server at https://api.contix.es/api/v1/mcp.",
  "tools": [
    {
      "description": "Add up the boxes (casillas) of the Spanish quarterly VAT return Modelo 303 with the formulas printed on the official AEAT form: 27, 45, 46, 64, 66, 87, 69 and 71. Input are the tax amounts (cuotas) per box, e.g. {\"09\": 17430, \"29\": 9870}. It only sums what it is given: it does not decide which rate or deduction applies and it is not a tax return.",
      "inputSchema": {
        "properties": {
          "casillas": {
            "additionalProperties": {
              "type": [
                "number",
                "string"
              ]
            },
            "description": "Box number -> amount. Accepted: 152, 167, 03, 155, 06, 09, 11, 13, 15, 158, 170, 18, 21, 24, 26, 29, 31, 33, 35, 37, 39, 41, 42, 43, 44, 58, 76, 65, 77, 110, 78, 68, 108, 70, 109",
            "type": "object"
          }
        },
        "required": [
          "casillas"
        ],
        "type": "object"
      },
      "name": "calculate_modelo_303",
      "outputSchema": null
    },
    {
      "description": "Look up an EU VAT number in the European Commission's VIES registry. Returns what the registry says: whether the number exists and, where the member state publishes it, the name and address. It draws NO tax conclusion. VIES is often down; that is reported as disponible=false, which is NOT the same as an invalid number.",
      "inputSchema": {
        "properties": {
          "numero": {
            "description": "VAT number, with or without country prefix",
            "type": "string"
          },
          "pais": {
            "description": "ISO country code (e.g. DE); omit when the number carries its prefix",
            "type": "string"
          }
        },
        "required": [
          "numero"
        ],
        "type": "object"
      },
      "name": "check_vat_number",
      "outputSchema": null
    },
    {
      "description": "Deadlines from the published Spanish rules: Veri*factu (RD 1007/2023, dates of RD-ley 15/2025) and mandatory B2B e-invoicing (RD 238/2026, counted from the ministerial order, provisional while the order is a draft). Information about the rules, not advice.",
      "inputSchema": {
        "properties": {
          "factura_a_empresas": {
            "description": "Invoices other businesses or professionals in Spain",
            "type": "boolean"
          },
          "forma": {
            "description": "sociedad = company paying Impuesto sobre Sociedades; autonomo = self-employed",
            "enum": [
              "sociedad",
              "autonomo"
            ],
            "type": "string"
          },
          "mas_8_millones": {
            "default": false,
            "description": "Turnover above 8 million EUR last year",
            "type": "boolean"
          }
        },
        "required": [
          "forma",
          "factura_a_empresas"
        ],
        "type": "object"
      },
      "name": "get_obligation_dates",
      "outputSchema": null
    },
    {
      "description": "Check whether an IBAN is well formed: country length (SWIFT IBAN registry) and ISO 13616 check digits. For Spanish IBANs also the two account check digits (DC) and the bank (entidad) with its BIC from the Banco de España registry. A 20-digit Spanish account number (CCC) is converted to its IBAN. Pure arithmetic: it does NOT confirm that the account exists or who owns it.",
      "inputSchema": {
        "properties": {
          "iban": {
            "description": "IBAN or 20-digit Spanish account, spaces allowed",
            "type": "string"
          }
        },
        "required": [
          "iban"
        ],
        "type": "object"
      },
      "name": "validate_iban",
      "outputSchema": null
    }
  ]
}

Verify it yourself

curl -s https://api.teppi.xyz/v1/evidence/sha256:bb02c54f3b0eddef017820fc7eefa332082a0108b9dc304ad38f92366f8dde87 | sha256sum