# Lithuanian IBAN (LT) Mod-97 Validator

> Lithuanian IBAN (LT) Mod-97 Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-29).

Validates whether a given string is a structurally correct, mod-97-valid Lithuanian IBAN (LT prefix, exactly 20 characters) via a paid POST endpoint.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-lt?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lithuanian-iban-lt-mod-97-validator-01a1e801
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RO8ctDQ8SxrnGGBNGBZ1s

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 lithuanian-iban-lt-mod-97-validator-01a1e801 -d '<json body>'
```

Example prompt: Can you check whether LT601010012345678901 is a valid Lithuanian IBAN — specifically that it's 20 characters long and passes the mod-97 checksum?

## When to prefer this

Use this endpoint when you specifically need to validate a Lithuanian (LT) IBAN and require the mod-97 mathematical checksum verification in addition to format/length checks. Prefer the unpaid sandbox endpoint POST /v1/sandbox/check-iban-lt first during development to avoid charges. For other country IBANs, sibling endpoints exist on the same host (e.g. LB, LI, MC, NL, SE, etc.).

## Known failure modes

- Input string is empty or exceeds 20,000 characters — rejected by schema
- IBAN is wrong country prefix (not LT) — validation fails
- IBAN is correct prefix but wrong length — fails length check
- Mod-97 checksum fails — invalid result returned
- Payment of $0.005 USDC not provided — 402 Payment Required response
- Network timeout or service unavailability

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid LT number of length 20. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-lt first.

## Output

A boolean or structured response indicating whether the submitted string is a valid Lithuanian IBAN — i.e., starts with 'LT', is exactly 20 characters long, and passes the ISO 7064 mod-97 checksum. Likely returns a validity flag and possibly an error reason if invalid.

## 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": [
    "LT15AAAA000000000000"
   ],
   "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/lithuanian-iban-lt-mod-97-validator-01a1e801/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)