Developer Documents
Overview
This is the documentation for the Monolay Open Banking API. It explains how to connect to your users' bank account and access account information from banks using the Open Banking APIs.
To get started, you need to sign up and get a client id and secret on the Monolay portal.
Service Endpoints
| Service | Live | Sandbox |
|---|---|---|
| Oauth Token | https://auth.monolay.io/oauth/token | https://sandbox-auth.monolay.co.uk/oauth/token |
| Account Information Services (AIS) | https://api.monolay.io/ais/v1 | https://sandbox-api.monolay.co.uk/ais/v1 |
Available Data
Account Information Services (AIS) can retrieve up to 24 months of transaction history and up to 90 days of continuous access before having to re-authorise the consent.
Coverage
Our AIS solution covers banks who implement the PSD2 Open Banking API. The institutionName is the bank's unique identifier which is passed when creating the consent.
| Bank | institutionName | Status | |
|---|---|---|---|
![]() | Allied Irish Bank | GB_AIB_PERSONAL | Live |
![]() | Bank of Ireland | GB_BANKOFIRELAND_PERSONAL | Live |
![]() | Bank of Scotland | GB_BANKOFSCOTLAND_PERSONAL | Live |
![]() | Barclays | GB_BARCLAYS_PERSONAL | Live |
![]() | Coutts | GB_COUTTS_PERSONAL | Live |
![]() | Danske Bank | GB_DANSKE_PERSONAL | Live |
![]() | First Direct | GB_FIRSTDIRECT_PERSONAL | Live |
![]() | Halifax | GB_HALIFAX_PERSONAL | Live |
![]() | HSBC | GB_HSBC_PERSONAL | Live |
![]() | Lloyds | GB_LLOYDS_PERSONAL | Live |
![]() | M&S Bank | GB_MSBANK_PERSONAL | Live |
![]() | Monzo | GB_MONZO_PERSONAL | Live |
![]() | Nationwide | GB_NATIONWIDE_PERSONAL | Live |
![]() | NatWest | GB_NATWEST_PERSONAL | Live |
![]() | Revolut | GB_REVOLUT_PERSONAL | Live |
![]() | Royal Bank of Scotland | GB_RBS_PERSONAL | Live |
![]() | Santander | GB_SANTANDER_PERSONAL | Live |
![]() | Starling | GB_STARLING_PERSONAL | Live |
![]() | Tide | GB_TIDE_PERSONAL | Live |
![]() | TSB | GB_TSB_PERSONAL | Live |
![]() | TESCO | GB_TESCO_PERSONAL | Live |
![]() | Ulster Bank | GB_ULSTER_PERSONAL | Live |





















