# Agent402 UK — CLABE Validator

> Agent402 UK — CLABE Validator is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Validates an 18-digit Mexican CLABE bank account number by checking its structure, bank code, and mod-10 checksum offline.

## Facts

- Endpoint: POST https://agent402.co.uk/v1/validate/clabe
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-uk-clabe-validator-0c242fdd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LlRzyHneKMVHwrOjOSWXS

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 agent402-uk-clabe-validator-0c242fdd -d '<json body>'
```

Example prompt: Before we send the payout to the Mexican supplier, can you validate this CLABE — 032180000118359719 — and confirm the checksum and bank code look correct?

## When to prefer this

Use this endpoint when you need a fast, cheap, offline CLABE validation before initiating a Mexican bank payout or onboarding a payee — especially when you want to avoid burning LLM tokens on deterministic math. Prefer over asking an LLM to compute the checksum manually, which is error-prone. Complements the sibling IBAN validator for multi-region payout preflight workflows.

## Known failure modes

- Non-18-digit input returns valid:false with a descriptive error
- Non-numeric characters cause a validation failure response
- Missing 'clabe' field in request body returns a 400-level error
- Payment (x402) failure if USDC balance is insufficient on Base

## How this service works

Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.

## Output

Returns a JSON object indicating whether the CLABE is valid overall, the extracted 3-digit bank code, and whether the mod-10 checksum passes — all computed offline with no external dependency.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "clabe": {
   "type": "string",
   "description": "18-digit CLABE"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "valid": true,
  "bank_code": "002",
  "valid_checksum": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-uk-clabe-validator-0c242fdd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.co.uk](https://www.zero.xyz/host/agent402.co.uk/llms.txt)