diff --git a/pynfe/utils/webservices.py b/pynfe/utils/webservices.py
index acabd6d..a1afe53 100644
--- a/pynfe/utils/webservices.py
+++ b/pynfe/utils/webservices.py
@@ -485,4 +485,68 @@ NFSE = {
 		'HTTPS':'https://producao.ginfes.com.br/ServiceGinfesImpl?wsdl',
 		'HOMOLOGACAO':'https://homologacao.ginfes.com.br/ServiceGinfesImpl?wsdl'
 	}
-}
\ No newline at end of file
+}
+
+AMBIENTE_PRODUCAO = 1
+AMBIENTE_HOMOLOGACAO = 2
+
+WS_MDFE_RECEPCAO = '1'
+WS_MDFE_RET_RECEPCAO = '2'
+WS_MDFE_RECEPCAO_EVENTO = '3'
+WS_MDFE_CONSULTA = '4'
+WS_MDFE_STATUS_SERVICO = '5'
+WS_MDFE_CONSULTA_NAO_ENCERRADOS = '6'
+
+MDFE_WS_METODO = {
+    WS_MDFE_RECEPCAO: {
+        'webservice': 'MDFeRecepcao',
+        'metodo': 'mdfeRecepcaoLote',
+        'versao': '3.00',
+    },
+    WS_MDFE_RET_RECEPCAO: {
+        'webservice': 'MDFeRetRecepcao',
+        'metodo': 'mdfeRetRecepcao',
+        'versao': '3.00',
+    },
+    WS_MDFE_RECEPCAO_EVENTO: {
+        'webservice': 'MDFeRecepcaoEvento',
+        'metodo': 'mdfeRecepcaoEvento',
+        'versao': '3.00',
+    },
+    WS_MDFE_CONSULTA: {
+        'webservice': 'MDFeConsulta',
+        'metodo': 'mdfeConsultaMDF',
+        'versao': '3.00',
+    },
+    WS_MDFE_STATUS_SERVICO: {
+        'webservice': 'MDFeStatusServico',
+        'metodo': 'mdfeStatusServicoMDF',
+        'versao': '3.00',
+    },
+    WS_MDFE_CONSULTA_NAO_ENCERRADOS: {
+        'webservice': 'MDFeConsNaoEnc',
+        'metodo': 'mdfeConsNaoEnc',
+        'versao': '3.00',
+    },
+}
+
+MDFE_WS_URL = {
+    AMBIENTE_PRODUCAO: {
+        'servidor': 'mdfe.svrs.rs.gov.br',
+        WS_MDFE_RECEPCAO: 'ws/MDFerecepcao/MDFeRecepcao.asmx',
+        WS_MDFE_RET_RECEPCAO: 'ws/MDFeRetRecepcao/MDFeRetRecepcao.asmx',
+        WS_MDFE_RECEPCAO_EVENTO: 'ws/MDFeRecepcaoEvento/MDFeRecepcaoEvento.asmx',
+        WS_MDFE_CONSULTA: 'ws/MDFeConsulta/MDFeConsulta.asmx',
+        WS_MDFE_STATUS_SERVICO: 'ws/MDFeStatusServico/MDFeStatusServico.asmx',
+        WS_MDFE_CONSULTA_NAO_ENCERRADOS: 'ws/MDFeConsNaoEnc/MDFeConsNaoEnc.asmx ',
+    },
+    AMBIENTE_HOMOLOGACAO: {
+        'servidor': 'mdfe-homologacao.svrs.rs.gov.br',
+        WS_MDFE_RECEPCAO: 'ws/MDFerecepcao/MDFeRecepcao.asmx',
+        WS_MDFE_RET_RECEPCAO: 'ws/MDFeRetRecepcao/MDFeRetRecepcao.asmx',
+        WS_MDFE_RECEPCAO_EVENTO: 'ws/MDFeRecepcaoEvento/MDFeRecepcaoEvento.asmx',
+        WS_MDFE_CONSULTA: 'ws/MDFeConsulta/MDFeConsulta.asmx',
+        WS_MDFE_STATUS_SERVICO: 'ws/MDFeStatusServico/MDFeStatusServico.asmx',
+        WS_MDFE_CONSULTA_NAO_ENCERRADOS: 'ws/MDFeConsNaoEnc/MDFeConsNaoEnc.asmx ',
+    },
+}