diff --git a/pkg/api/types/types.go b/pkg/api/types/types.go
index 3100fdf..6be1e4f 100644
--- a/pkg/api/types/types.go
+++ b/pkg/api/types/types.go
@@ -2,52 +2,52 @@ package types
 
 // Coin struct
 type Coin struct {
-	ID               string
-	Name             string
-	Symbol           string
-	Rank             int
-	Price            float64
-	Volume24H        float64
-	MarketCap        float64
-	AvailableSupply  float64
-	TotalSupply      float64
-	PercentChange1H  float64
-	PercentChange24H float64
-	PercentChange7D  float64
-	LastUpdated      string
+	ID               string  `json:"id"`
+	Name             string  `json:"name"`
+	Symbol           string  `json:"symbol"`
+	Rank             int     `json:"rank"`
+	Price            float64 `json:"price"`
+	Volume24H        float64 `json:"volume24H"`
+	MarketCap        float64 `json:"marketCap"`
+	AvailableSupply  float64 `json:"availableSupply"`
+	TotalSupply      float64 `json:"totalSupply"`
+	PercentChange1H  float64 `json:"percentChange1H"`
+	PercentChange24H float64 `json:"percentChange24H"`
+	PercentChange7D  float64 `json:"percentChange7D"`
+	LastUpdated      string  `json:"lastUpdated"`
 }
 
 // GlobalMarketData struct
 type GlobalMarketData struct {
-	TotalMarketCapUSD            float64
-	Total24HVolumeUSD            float64
-	BitcoinPercentageOfMarketCap float64
-	ActiveCurrencies             int
-	ActiveAssets                 int
-	ActiveMarkets                int
+	TotalMarketCapUSD            float64 `json:"totalMarketCapUSD"`
+	Total24HVolumeUSD            float64 `json:"total24HVolumeUSD"`
+	BitcoinPercentageOfMarketCap float64 `json:"bitcoinPercentageOfMarketCap"`
+	ActiveCurrencies             int     `json:"activeCurrencies"`
+	ActiveAssets                 int     `json:"activeAssets"`
+	ActiveMarkets                int     `json:"activeMarkets"`
 }
 
 // CoinGraph struct
 type CoinGraph struct {
-	MarketCapByAvailableSupply [][]float64
-	PriceBTC                   [][]float64
-	Price                      [][]float64
-	Volume                     [][]float64
+	MarketCapByAvailableSupply [][]float64 `json:"marketCapByAvailableSupply"`
+	PriceBTC                   [][]float64 `json:"priceBTC"`
+	Price                      [][]float64 `json:"price"`
+	Volume                     [][]float64 `json:"volume"`
 }
 
 // Market struct
 type Market struct {
-	Rank          int
-	Exchange      string
-	Pair          string
-	VolumeUSD     float64
-	Price         float64
-	VolumePercent float64
-	Updated       string
+	Rank          int     `json:"rank"`
+	Exchange      string  `json:"exchange"`
+	Pair          string  `json:"pair"`
+	VolumeUSD     float64 `json:"volumeUSD"`
+	Price         float64 `json:"price"`
+	VolumePercent float64 `json:"volumePercent"`
+	Updated       string  `json:"updated"`
 }
 
 // MarketGraph struct
 type MarketGraph struct {
-	MarketCapByAvailableSupply [][]float64
-	VolumeUSD                  [][]float64
+	MarketCapByAvailableSupply [][]float64 `json:"marketCapByAvailableSupply"`
+	VolumeUSD                  [][]float64 `json:"volumeUSD"`
 }