# IBAN SC Mod-97 Validator

> IBAN SC Mod-97 Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-20).

Validates whether a given IBAN is a mod-97-valid Swiss (SC) IBAN of exactly 31 characters

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-sc?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iban-sc-mod-97-validator-edaa68bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-Cutrg_gm_Bzt6W6fnivV

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-sc-mod-97-validator-edaa68bb -d '<json body>'
```

Example prompt: Can you check if CH5604835012345678009 is a valid Swiss IBAN — specifically whether it passes the mod-97 checksum and is exactly 31 characters long?

## When to prefer this

Use this endpoint when you specifically need to validate a Swiss (SC-prefixed) IBAN for mod-97 checksum correctness and 31-character length conformance — ideal before initiating payments, during financial onboarding, or as a data quality gate. Prefer the free sandbox POST /v1/sandbox/check-iban-sc for testing. Choose this over generic IBAN libraries when you need a reliable, paid, hosted microservice with no local dependency.

## Known failure modes

- IBAN string is empty or missing — request rejected
- IBAN exceeds maxLength of 20000 characters (unlikely but schema-enforced)
- Non-Swiss or wrong-country-prefix IBAN provided — may return invalid or unsupported
- Malformed input schema — 400-level error
- Payment of $0.006 USDC not included or rejected — 402 Payment Required

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid SC number of length 31. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-iban-sc first.

## Output

A boolean or structured result indicating whether the provided IBAN passes the mod-97 checksum algorithm and meets the 31-character SC (Swiss) IBAN length requirement, potentially with details on which check failed 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": [
    "SC96AAAA00000000000000000000000"
   ],
   "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-sc-mod-97-validator-edaa68bb/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)