# Onboarding

For TPPs to be able to make a request on the API, they must follow the onboarding process.
For that, it is required from them to [send us an email](mailto:legal@nash.io) with the following  elements :
  - one or more **redirect URI** for OAuth2 authentication
  - a valid **QSealC certificate**

  In exchange of what they will receive a `client_id` and a `client_secret` to be used with OAuth2 authentication.