Updated on 2026-08-14

app/src/main/java/com/tangem/tap/network/coinmarketcap/CoinMarketCapApi.kt

@@ -0,0 +1,38 @@
+package com.tangem.tap.network.coinmarketcap
+
+import com.tangem.tap.TapConfig
+import com.tangem.tap.network.createRetrofitInstance
+import okhttp3.Interceptor
+import okhttp3.Response
+import retrofit2.http.GET
+import retrofit2.http.Query
+
+interface CoinMarketCapApi {
+
+    @GET("v1/tools/price-conversion")
+    suspend fun getRateInfo(
+            @Query("amount") amount: Int,
+            @Query("symbol") cryptoId: String
+    ): RateInfoResponse
+
+    companion object {
+        private const val baseUrl = "https://pro-api.coinmarketcap.com/"
+
+        fun create(): CoinMarketCapApi {
+            return createRetrofitInstance(
+                    baseUrl,
+                    listOf(createCoinMarketRequestInterceptor()),
+            ).create(CoinMarketCapApi::class.java)
+        }
+    }
+}
+
+private fun createCoinMarketRequestInterceptor(): Interceptor {
+    return object : Interceptor {
+        override fun intercept(chain: Interceptor.Chain): Response {
+            val requestBuilder = chain.request().newBuilder()
+            requestBuilder.addHeader("X-CMC_PRO_API_KEY", TapConfig.coinMarketCapKey)
+            return chain.proceed(requestBuilder.build())
+        }
+    }
+}

app/src/main/java/com/tangem/tap/network/coinmarketcap/CoinMarketCapService.kt

@@ -0,0 +1,19 @@
+package com.tangem.tap.network.coinmarketcap
+
+import com.tangem.commands.common.network.Result
+import com.tangem.commands.common.network.performRequest
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import java.math.BigDecimal
+
+class CoinMarketCapService {
+    private val api: CoinMarketCapApi by lazy { CoinMarketCapApi.create() }
+
+    suspend fun getRate(currency: String): Result<BigDecimal> = withContext(Dispatchers.IO) {
+        val response = performRequest { api.getRateInfo(1, currency) }
+        return@withContext when (response) {
+            is Result.Success -> Result.Success(response.data.data.quote.usd.price)
+            is Result.Failure -> response
+        }
+    }
+}

app/src/main/java/com/tangem/tap/network/coinmarketcap/Response.kt

@@ -0,0 +1,41 @@
+package com.tangem.tap.network.coinmarketcap
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+import java.math.BigDecimal
+
+@JsonClass(generateAdapter = true)
+data class RateInfoResponse(
+        val status: Status,
+        val data: RateData
+)
+
+@JsonClass(generateAdapter = true)
+data class RateData(
+        val quote: Quote
+)
+
+@JsonClass(generateAdapter = true)
+data class Quote(
+        @Json(name = "USD")
+        val usd: CurrencyRate
+)
+
+@JsonClass(generateAdapter = true)
+data class CurrencyRate(
+        val price: BigDecimal
+)
+
+
+@JsonClass(generateAdapter = true)
+data class Status(
+        val timestamp: String,
+        @Json(name = "error_code")
+        val errorCode: Int,
+        @Json(name = "error_message")
+        val errorMessage: String?,
+        val elapsed: Int,
+        @Json(name = "credit_count")
+        val creditCount: Int,
+        val notice: String?
+)