# IBAN Validation

> IBAN Validation is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-30).

Validates an IBAN number for correct country code, length, ISO 13616 checksum, bank code, and BBAN structure, returning a reason when invalid.

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/finance/iban?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iban-validation-056b3d17
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BW0AB593lPjywW0jqaXoR

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-validation-056b3d17
```

Example prompt: Can you validate this IBAN for me before I submit the bank transfer: GB29 NWBK 6016 1331 9268 19?

## When to prefer this

Choose this endpoint when you need offline, instant IBAN validation covering ~80 countries with full ISO 13616 checksum verification, bank code parsing, and actionable error reasons — ideal for pre-transfer checks, form validation, and payout onboarding flows where you want structured feedback rather than a simple pass/fail.

## Known failure modes

- Invalid or unrecognised country code returns validation failure with reason
- Checksum mismatch returns failure indicating likely digit transposition or typo
- Wrong length for the declared country returns reason citing expected vs actual length
- Unsupported or uncommon country (outside ~80 supported) may return limited detail
- Missing iban query parameter returns a 400-level error
- Malformed request returns error without IBAN details

## How this service works

Validate an IBAN: country, correct length, ISO 13616 checksum, bank code and BBAN, with a reason when invalid (likely typo, wrong length). Works offline for about 80 countries. Use before sending a bank transfer or saving payout details.

## Output

Returns a structured object indicating whether the IBAN is valid, plus parsed components (country code, bank code, BBAN) and, if invalid, a human-readable reason such as wrong length, checksum failure, or unrecognised country code.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "iban"
     ],
     "properties": {
      "iban": {
       "type": "string",
       "description": "IBAN, spaces allowed"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/iban-validation-056b3d17/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)