# Estonian IBAN Mod-97 Validator

> Estonian IBAN Mod-97 Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-29).

Validates whether a given string is a mod-97-valid Estonian IBAN (EE prefix, length 20)

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-ee?utm_source=zero.xyz
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/estonian-iban-mod-97-validator-902304f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6q2T-wjfg2iGTxhK1CNql

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 estonian-iban-mod-97-validator-902304f7 -d '<json body>'
```

Example prompt: Can you check whether EE382200221020145685 is a valid Estonian IBAN — specifically that it's exactly 20 characters and passes the mod-97 checksum?

## When to prefer this

Use this endpoint when you specifically need to validate Estonian (EE) IBANs and require mod-97 checksum verification. Prefer the free sandbox endpoint (/v1/sandbox/check-iban-ee) for development and testing; use this paid endpoint for production validation where reliability and correctness guarantees matter. Choose this over generic IBAN validators when you need a lightweight, single-country EE-focused check with minimal latency.

## Known failure modes

- Input string is empty or missing — request rejected
- IBAN is not EE-prefixed — returns invalid
- Length is not exactly 20 characters — returns invalid
- Mod-97 checksum fails — returns invalid
- Malformed request body — HTTP 400
- Payment not attached or insufficient — HTTP 402

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid EE number of length 20. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ee first.

## Output

A boolean or structured result indicating whether the supplied string is a valid Estonian IBAN: EE-prefixed, exactly 20 characters, and passing the ISO 7064 mod-97 checksum. No data is stored server-side.

## 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": [
    "EE26AAAA000000000000"
   ],
   "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/estonian-iban-mod-97-validator-902304f7/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)