Updated on 2026-08-14

core/datasource/src/main/java/com/tangem/datasource/api/common/SwitchEnvironmentInterceptor.kt

@@ -46,7 +46,9 @@ internal class SwitchEnvironmentInterceptor(
 
     private fun Request.Builder.addHeaders(headers: Map<String, Provider<String>>): Request.Builder {
         headers.forEach { (name, valueProvider) ->
-            addHeader(name = name, value = valueProvider())
+            val value = valueProvider()
+
+            if (value.isNotBlank()) addHeader(name = name, value = value)
         }
 
         return this

core/datasource/src/main/java/com/tangem/datasource/api/common/config/Express.kt

@@ -51,6 +51,7 @@ internal class Express(
         put(key = "user-id", value = Provider(expressAuthProvider::getUserId))
         put(key = "session-id", value = Provider(expressAuthProvider::getSessionId))
         putAll(from = RequestHeader.AppVersionPlatformHeaders(appVersionProvider).values)
+        put(key = "refcode", value = Provider(expressAuthProvider::getRefCode))
     }
 
     private fun getApiKey(isProd: Boolean): String {

core/datasource/src/main/java/com/tangem/datasource/api/express/TangemExpressApi.kt

@@ -5,7 +5,10 @@ import com.tangem.datasource.api.express.models.request.AssetsRequestBody
 import com.tangem.datasource.api.express.models.request.ExchangeSentRequestBody
 import com.tangem.datasource.api.express.models.request.PairsRequestBody
 import com.tangem.datasource.api.express.models.response.*
-import retrofit2.http.*
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.POST
+import retrofit2.http.Query
 
 /**
  * Interface of Tangem Express API (new swap mechanism)
@@ -33,7 +36,6 @@ interface TangemExpressApi {
         @Query("toDecimals") toDecimals: Int,
         @Query("providerId") providerId: String,
         @Query("rateType") rateType: String,
-        @Header("refcode") refCode: String? = null,
     ): ApiResponse<ExchangeQuoteResponse>
 
     @GET("exchange-data")