# IBAN BR Validator (mod-97)

> IBAN BR Validator (mod-97) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).

Validates whether a given string is a mod-97-valid Brazilian IBAN of exactly 29 characters

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-br?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iban-br-validator-mod-97-8b02d181
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FyRPaxF4VrcIM_lR0c711

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-br-validator-mod-97-8b02d181 -d '<json body>'
```

Example prompt: Can you check whether this IBAN is a valid Brazilian bank account number that passes the mod-97 checksum: BR1500000000000010932840814P2?

## When to prefer this

Use this endpoint specifically when you need to validate a Brazilian (BR) IBAN — it is purpose-built for the BR country code and 29-character length constraint. Prefer the free sandbox endpoint (POST /v1/sandbox/check-iban-br) for testing. For other country IBANs (e.g. Mauritius MU), use the sibling country-specific endpoints on the same host.

## Known failure modes

- IBAN is wrong length (not 29 characters) — returns invalid
- IBAN fails mod-97 checksum — returns invalid
- IBAN does not start with 'BR' country code — returns invalid
- Empty or missing value field — returns error
- Value exceeds maxLength (20000 chars) or is below minLength (1) — schema rejection

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid BR number of length 29. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-iban-br first.

## Output

Returns whether the submitted string is a valid Brazilian IBAN — specifically confirming it is exactly 29 characters long and passes the mod-97 checksum algorithm used internationally for IBAN validation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "description": "JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."
  },
  "value": {
   "type": "string",
   "examples": [
    "BR78AAAA000000000000000000000"
   ],
   "maxLength": 20000,
   "minLength": 1,
   "description": "Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."
  },
  "schema": {
   "description": "JSON Schema document for schema-check SKUs. Omit it on string checks."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/iban-br-validator-mod-97-8b02d181/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)