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
Specifications
OpenAPI
https://raw.githubusercontent.com/api-evangelist/six-group/refs/heads/main/openapi/six-group-bankmaster-api-openapi.yml
OpenAPI
https://raw.githubusercontent.com/api-evangelist/six-group/refs/heads/main/openapi/six-group-iban-api-openapi.yml
OpenAPI
https://raw.githubusercontent.com/api-evangelist/six-group/refs/heads/main/openapi/_original/six-group-swiss-bank-master-openapi.json