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SIX

Swiss Bank Master API

Master data required for electronic payments in Switzerland - bank master records in JSON and CSV plus IBAN tooling - published openly on the SIX API portal; the documented production endpoints respond without registration (healthcheck HTTP 200 on 2026-07-21).

Documentation Provider Profile APIs.io OpenAPI GitHub

Swiss Bank Master API is one of 11 APIs that SIX publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Bank Master, IBAN, Payments, and Switzerland. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

This API exposes 1 operation across 1 path, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 3.1 (generated 2025-12-05T07:26:41Z).

Requests are made against 3 base URLs: https://api.six-group.com/api/epcd/bankmaster/v3, https://api.p2p.six-group.com/api/epcd/bankmaster/v3, https://api.fip.six-group.com/api/epcd/bankmaster/v3.

1 operations 1 paths 4 schemas 1 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3.1 (generated 2025-12-05T07:26:41Z)
Base URL
https://api.six-group.com/api/epcd/bankmaster/v3
Contact
https://www.six-group.com/de/products-services/banking-services/interbank-clearing/online-services/download-bank-master.html
Resource Areas
1

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 GET. Each is listed below with its method, path, parameters, and response codes.

IBAN 1

Bankmaster IBAN validation API Public REST endpoint of the bank master iban validation api.

GET
/iban
GET IBAN information
getIbanInformation 1 param → 200default

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are Problem (6 properties), GenericObject (2 properties), IbanResponse (2 properties). Each schema is shown below with its type and property counts.

IbanValidationResult
string
Validation result. Possible values: - OK This IBAN is formally correct - INVALIDCOUNTRYCODE This IBAN has an invalid country code - INVALIDLENGTH This IBAN has…
Problem
object
6 properties 3 required
IbanResponse
object
IBAN validation result and IID if available.
2 properties 1 required
GenericObject
object
Structured type that contains an object and its type.
2 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

six-group-iban-api-openapi.yml Raw ↑

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SIX 3 DS API
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#Bank Master#IBAN#Payments#Switzerland
← Back to S APIs
API Details
ID
six-group:swiss-bank-master-api
Base URL
https://api.six-group.com/api/epcd/bankmaster/v3
Docs
https://apiportal.six-group.com/apis/swiss-bank-master-api-ch-v3/docs
Provider
SIX
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