हिन्दी 
தமிழ் 
मराठी 
ગુજરાતી
Solution providers who wish to provide full end-to-end experience to their clients can integrate onboarding APIs. These are VAS APIs of IRIS IRP. Unique credentials called Portal ID will be provided to access these VAS APIs.
List of APIs
| Type | API | Scope |
| Post | Partner Login | Authentication of API user (partner) |
| Post | Add User | Creating users on IRIS IRP via partner |
| Post | Generate OTP | Get OTP to verify of GSTIN provided by user |
| Post | Verify OTP | Confirm OTP to complete GSTIN registration on IRIS IRP |
| Post | Set IRP Credentials | Define IRP credentials for the registered GSTIN. All E-invoice core API calls need GSTIN IRP credentials for authentication |
| Post | Manage API Access | Authorise the API user to manage e-invoice operations via API user’s application |
API flow
