diff --git a/.gitignore b/.gitignore
index c6f9a44..f6afc09 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 .vscode/settings.json
+modulos/constantes.py
diff --git a/crypto_portfolio.py b/crypto_portfolio.py
index 4b875a2..7174820 100644
--- a/crypto_portfolio.py
+++ b/crypto_portfolio.py
@@ -1,13 +1,6 @@
 import modulos.coingecko_api as cgapi
 import time
 
-APY_KEY = "CG-K5RS5VXsdFDip2UvY3z8VjQP"
-
-cgapi.headers = {
-    'accept': 'application/json',
-    'x-cg-demo-api-key': APY_KEY,
-}
-
 criptomoeda: str = 'bitcoin'
 vs_currency: str = 'eur'
 dias: str = '30'
diff --git a/modulos/__pycache__/coingecko_api.cpython-312.pyc b/modulos/__pycache__/coingecko_api.cpython-312.pyc
index b2615f2..65312ef 100644
Binary files a/modulos/__pycache__/coingecko_api.cpython-312.pyc and b/modulos/__pycache__/coingecko_api.cpython-312.pyc differ
diff --git a/modulos/__pycache__/constantes.cpython-312.pyc b/modulos/__pycache__/constantes.cpython-312.pyc
new file mode 100644
index 0000000..46029e3
Binary files /dev/null and b/modulos/__pycache__/constantes.cpython-312.pyc differ
diff --git a/modulos/coingecko_api.py b/modulos/coingecko_api.py
index c75c745..277c040 100644
--- a/modulos/coingecko_api.py
+++ b/modulos/coingecko_api.py
@@ -3,11 +3,11 @@
 
 import requests
 from typing import Any
+from modulos.constantes import CHAVE_API_DEMO
 
-CHAVE_API = 'CG-K5RS5VXsdFDip2UvY3z8VjQP'
 headers = {
     'accept': 'application/json',
-    'x-cg-demo-api-key': CHAVE_API
+    'x-cg-demo-api-key': CHAVE_API_DEMO
 }
 
 url_raiz_API = 'https://api.coingecko.com/api/v3/'
diff --git a/testes/teste_coingecko_api.py b/testes/teste_coingecko_api.py
index 0669056..9e798c1 100644
--- a/testes/teste_coingecko_api.py
+++ b/testes/teste_coingecko_api.py
@@ -1,11 +1,14 @@
 import unittest
-
 import modulos.coingecko_api as cgapi
 
 
 class Teste_API(unittest.TestCase):
     '''teste API()'''
-    pass
+    def test_api_method(self):
+        url, codigo, data = cgapi.API('ping', {})
+        self.assertIsInstance(url, str)
+        self.assertEqual(codigo, 200)
+        self.assertIsInstance(data, dict)
 
 
 class Teste_ping(unittest.TestCase):
@@ -35,4 +38,8 @@ class Teste_coins_list(unittest.TestCase):
 
 class Teste_coins_list_with_market_data(unittest.TestCase):
     '''teste coins_list_with_market_data()'''
-    pass
\ No newline at end of file
+    pass
+
+# unittest.main()
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file