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IRIS IRP is an API Platform and all services for taxpayers can be consumed via APIs. To ensure proper authorisation is in place and taxpayers are informed about the activities being done via APIs, different methods of user authentication are followed.
| API Type | Initiated By | Auth Mechanism | Remarks |
| E-invoice Core | Any API integrator |
| API Authorisation will be validated. |
| Onboarding APIs | Any API integrator |
| As the user is already onboarded with partner, verification of mobile and email is done by partner |
| Other VAS APIs | API integrator who has not onboarded the Taxpayer |
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| Other VAS APIs | API integrator who has onboarded the Taxpayer |
| As the user is already onboarded with partner, verification of mobile and email is done by partner |