# IBAN Validator

> IBAN Validator is a paid API for AI agents from conclavex402.pythonanywhere.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).

Validates an IBAN by checking country code, length, and ISO 13616 mod-97 checksum, returning validity, country, and check digits.

## Facts

- Endpoint: POST https://conclavex402.pythonanywhere.com/u/iban?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iban-validator-d2e54c16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pB1K9U6CeRAscC_NjXys-

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability iban-validator-d2e54c16 -d '<json body>'
```

Example prompt: Can you check if this IBAN is valid: DE89370400440532013000? I need to know if the checksum is correct, what country it belongs to, and what the check digits are before I send a payment.

## When to prefer this

Choose this endpoint when you need a lightweight, fast, ISO 13616-compliant IBAN checksum and country/length validation without a full banking API integration. Ideal for pre-payment verification, form validation, or any workflow where you need to confirm an IBAN is structurally correct before submitting it to a bank or payment processor.

## Known failure modes

- Invalid or malformed IBAN input returns valid=false with no country or check digit details
- Missing or empty IBAN body field may return a 400-level error
- IBANs from unsupported or unrecognized countries may fail length validation
- Network or server errors on pythonanywhere.com may result in 5xx responses
- Whitespace or formatting characters in the IBAN string may cause validation failures

## How this service works

Validate an IBAN (international bank account number) — check the country, length and ISO 13616 mod-97 checksum; returns validity, country and check digits.

## Output

Returns a JSON object with a boolean 'valid' field indicating overall validity, a 'country' field with the ISO 3166-1 alpha-2 country code extracted from the IBAN, the expected 'iban_length' for that country, and the 'check_digits' parsed from the IBAN.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "valid": true,
  "country": "DE",
  "iban_length": 22,
  "check_digits": "89"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/iban-validator-d2e54c16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from conclavex402.pythonanywhere.com](https://www.zero.xyz/host/conclavex402.pythonanywhere.com/llms.txt)