diff --git a/polygon/client_test.go b/polygon/client_test.go
new file mode 100644
index 0000000..eaaf249
--- /dev/null
+++ b/polygon/client_test.go
@@ -0,0 +1,13 @@
+package polygon
+
+import (
+	"os"
+	"testing"
+)
+
+var ApiKey = os.Getenv("POLYGON_API_KEY")
+
+func TestClient_GetLatestCandles(t *testing.T) {
+	client := NewClient("api.polygon.io", ApiKey)
+	client.GetLatestCandles("EUR-USD")
+}
diff --git a/twelve_data/client.go b/twelve_data/client.go
index dfcdc63..88df72c 100644
--- a/twelve_data/client.go
+++ b/twelve_data/client.go
@@ -22,7 +22,7 @@ func NewClient(host string, apiKey string) *Client {
 func (c *Client) GetLatestCandles(symbol string, micCode string) []*data.Candle {
 	client := resty.New()
 	url := fmt.Sprintf(
-		"https://%s/time_series?symbol=%s&interval=1min&apikey=%s&mic_code=%s",
+		"https://%s/time_series?symbol=%s&interval=1min&apikey=%s&mic_code=%s&outputsize=5000",
 		c.host, symbol, c.apiKey, micCode,
 	)
 	resp, err := client.R().Get(url)
diff --git a/twelve_data/client_test.go b/twelve_data/client_test.go
new file mode 100644
index 0000000..3b3a4a5
--- /dev/null
+++ b/twelve_data/client_test.go
@@ -0,0 +1,13 @@
+package twelve_data
+
+import (
+	"os"
+	"testing"
+)
+
+var ApiKey = os.Getenv("TWELVE_DATA_API_KEY")
+
+func TestClient_GetLatestCandles(t *testing.T) {
+	client := NewClient("api.twelvedata.com", ApiKey)
+	client.GetLatestCandles("WTI/USD", "COMMODITY")
+}