# Criex Merchant Technical User Api ## API Docs - SSO [Authenticate user](https://api-docs.criex.io/authenticate-user-18598598e0.md): After you have authenticated you can use the `token` to make subsequent requests to the api. - Invoices [Add invoice](https://api-docs.criex.io/add-invoice-18598599e0.md): Add invoice - Invoices [Get invoice by id](https://api-docs.criex.io/get-invoice-by-id-18598600e0.md): Get invoice on invoice by it's id ## Schemas - Schemas [SSOAuthenticationRequest](https://api-docs.criex.io/ssoauthenticationrequest-7702673d0.md): - Schemas [MerchantRole](https://api-docs.criex.io/merchantrole-7702674d0.md): - Schemas [KycLevel](https://api-docs.criex.io/kyclevel-7702675d0.md): - Schemas [SSOAuthenticationResponse](https://api-docs.criex.io/ssoauthenticationresponse-7702676d0.md): - Schemas [CreateInvoiceItem](https://api-docs.criex.io/createinvoiceitem-7702677d0.md): - Schemas [CreateInvoice](https://api-docs.criex.io/createinvoice-7702678d0.md): - Schemas [Address](https://api-docs.criex.io/address-7702679d0.md): - Schemas [InvoiceStatus](https://api-docs.criex.io/invoicestatus-7702680d0.md): - Schemas [InvoiceType](https://api-docs.criex.io/invoicetype-7702681d0.md): - Schemas [CryptoCurrencyFamily](https://api-docs.criex.io/cryptocurrencyfamily-7702682d0.md): - Schemas [PaymentAssetType](https://api-docs.criex.io/paymentassettype-7702683d0.md): - Schemas [PaymentProviderName](https://api-docs.criex.io/paymentprovidername-7702684d0.md): - Schemas [CreatedAt](https://api-docs.criex.io/createdat-7702685d0.md): - Schemas [InvoicePaymentRequest](https://api-docs.criex.io/invoicepaymentrequest-7702686d0.md): - Schemas [UpdatedAt](https://api-docs.criex.io/updatedat-7702687d0.md): - Schemas [Invoice](https://api-docs.criex.io/invoice-7702688d0.md):