# IBANForge Swiss Clearing Number (IID) Lookup

> IBANForge Swiss Clearing Number (IID) Lookup is a paid API for AI agents from api.ibanforge.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).

Resolves a Swiss BC-Nummer / IID (1–5 digits) into full institution details including name, type, address, BIC, and payment-rail participation (SIC, RTGS CHF, Instant Payments CHF, euroSIC, LSV+/BDD) from the SIX BankMaster registry.

## Facts

- Endpoint: GET https://api.ibanforge.com/v1/ch/clearing/:iid?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ibanforge-swiss-clearing-number-iid-lookup-c401645d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2HSQX8qUaU9Mf6BW2nQpX

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 ibanforge-swiss-clearing-number-iid-lookup-c401645d
```

Example prompt: Can you look up Swiss clearing number 768 and tell me the bank's full name, its BIC, and whether it's enrolled in Instant Payments CHF and QR-IID?

## When to prefer this

Use this endpoint when you have a Swiss BC-Nummer or IID and need authoritative institution details and payment-rail membership from the canonical SIX BankMaster source. Prefer this over generic IBAN validation when you specifically need Swiss interbank clearing data, QR-IID allocation, or CHF-specific rail participation (SIC, RTGS CHF, Instant Payments CHF). For European IBANs or BIC-first lookups, use the sibling IBAN validation or BIC resolution endpoints instead.

## Known failure modes

- IID not found (no matching entry in SIX BankMaster) — returns 404
- IID out of valid range (must be 1–5 digits) — returns 400 validation error
- Upstream SIX BankMaster data temporarily unavailable — returns 503
- Network timeout (server processing <5ms but round-trip latency varies — use GET /ping to measure)
- Payment rejected before call (x402 payment protocol failure)

## How this service works

Resolve a Swiss BC-Nummer / IID (1-5 digits) into institution name, type, address, BIC, the full payment-rail participation (SIC, RTGS CHF, Instant Payments CHF, euroSIC, LSV+/BDD) and the QR-IID allocation. Backed by 1,100+ SIX BankMaster entries (refreshed monthly) — the canonical Swiss banking source. Production · server processing <5ms (network excluded — measure your own round trip on GET /ping) · 1,100+ SIX BankMaster entries, refreshed monthly · v1.4.3.

## Output

Returns the institution's official name, institution type, full postal address, BIC/SWIFT code, participation flags for SIC, RTGS CHF, Instant Payments CHF, euroSIC, and LSV+/BDD payment rails, plus QR-IID allocation status — sourced from 1,100+ SIX BankMaster entries refreshed monthly.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "discoverable": {
     "type": "boolean"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ibanforge-swiss-clearing-number-iid-lookup-c401645d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.ibanforge.com](https://www.zero.xyz/host/api.ibanforge.com/llms.txt)