# Strale IBAN Validator

> Strale IBAN Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054/call, status unknown (last checked 2026-09-15).

Validates an IBAN (International Bank Account Number) for format correctness and checksum compliance

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/iban-validate
- Price: $0.054/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-iban-validator-85c2f807
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hQVVrWow3b8ZQHtVTvTfi

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 strale-iban-validator-85c2f807
```

Example prompt: Can you check whether this IBAN is valid: SE3550000000054910000003?

## When to prefer this

Choose this endpoint when you need a lightweight, auditable, single-IBAN validation call with a cryptographic audit trail — ideal for compliance-sensitive workflows, fintech onboarding, invoice processing, or payment pipelines where you need a tamper-evident log of every validation. Prefer it over generic regex checks when you need verified, independently tested validation logic across 27 countries with per-call audit records.

## Known failure modes

- Missing 'iban' query parameter returns a 400 or validation error
- Malformed or unsupported IBAN country code returns invalid result
- Payment failure or insufficient USDC balance blocks the request (x402)
- Network timeout or service unavailability returns 5xx error
- IBANs with correct format but invalid checksum are flagged as invalid

## How this service works

Validate an IBAN number. Checks format, length, and mod-97 checksum. Extracts country code, bank identifier, and branch code. Pure algorithmic — fast and cheap.

## Output

Returns a validation result indicating whether the supplied IBAN is structurally valid, passes checksum rules, and conforms to the expected country-specific format. Each call also returns a cryptographically hashed audit record for compliance traceability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "iban"
 ],
 "properties": {
  "iban": {
   "type": "string",
   "description": "IBAN to validate (e.g. SE3550000000054910000003)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "error": {
  "type": "string"
 },
 "valid": {
  "type": "boolean"
 },
 "bank_code": {
  "type": "string"
 },
 "branch_code": {
  "type": "string"
 },
 "country_code": {
  "type": "string"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-iban-validator-85c2f807/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)