diff --git a/.gitignore b/.gitignore
index e3f27ab..95cb8ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,4 +24,7 @@ frontend/*.sln
 frontend/*.sw?
 
 # Do not commit _pycache_ directories
-backend/__pycache__/
\ No newline at end of file
+backend/__pycache__/
+backend/endpoints/__pycache__/
+backend/models/schemas/__pycache__/
+backend/models/sql/__pycache__/
\ No newline at end of file
diff --git a/backend/.env b/backend/.env
index d646ae9..0822967 100644
--- a/backend/.env
+++ b/backend/.env
@@ -1 +1,4 @@
+# esto esta aqui porque es un entorno local
+# y además un usuario y contraseña bastante 
+# genéricos
 DB_URL = "mysql+aiomysql://root:root@localhost:3306/DAD"
\ No newline at end of file
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 5c55989..d318c19 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -4,4 +4,5 @@ contextlib2
 dotenv
 pydantic
 sqlalchemy
-db
\ No newline at end of file
+databases
+aiomysql
diff --git a/frontend/public/config/settings.json b/frontend/public/config/settings.json
index cb18d28..86ae650 100644
--- a/frontend/public/config/settings.json
+++ b/frontend/public/config/settings.json
@@ -6,6 +6,11 @@
         ]
     },
     "appConfig": {
+        "endpoints": {
+            "baseUrl": "http://localhost:8080/api/v1",
+            "sensors": "sensors",
+            "sensor": "sensors/sensor"
+        },
         "historyChartConfig": {
             "timeLabels": [
                 "08:00",
diff --git a/frontend/src/components/App.jsx b/frontend/src/components/App.jsx
index 6acf5b8..4a63281 100644
--- a/frontend/src/components/App.jsx
+++ b/frontend/src/components/App.jsx
@@ -3,16 +3,13 @@ import 'leaflet/dist/leaflet.css'
 import 'bootstrap/dist/css/bootstrap.min.css'
 import 'bootstrap/dist/js/bootstrap.bundle.min.js'
 
-import { ThemeProvider } from '../contexts/ThemeContext.jsx'
-
 import Home from '../pages/Home.jsx'
 
 const App = () => {
   return (
     <>
-      <ThemeProvider>
-          <Home />
-      </ThemeProvider>
+      {/* Planeo añadir un React Router */}
+      <Home />
     </>
   );
 }
diff --git a/frontend/src/components/HistoryCharts.jsx b/frontend/src/components/HistoryCharts.jsx
index eea2fb6..26c0015 100644
--- a/frontend/src/components/HistoryCharts.jsx
+++ b/frontend/src/components/HistoryCharts.jsx
@@ -6,16 +6,28 @@ import PropTypes from "prop-types";
 
 import { useTheme } from "../contexts/ThemeContext.jsx";
 import { DataProvider, useData } from "../contexts/DataContext.jsx";
-import { ConfigProvider, useConfig } from "../contexts/ConfigContext.jsx";
+import { useConfig } from "../contexts/ConfigContext.jsx";
 
 ChartJS.register(LineElement, PointElement, LinearScale, CategoryScale, Filler);
 
 const HistoryCharts = () => {
+  const { config, configLoading, configError } = useConfig();
+  
+  if (configLoading) return <p>Cargando configuración...</p>;
+  if (configError) return <p>Error al cargar configuración: {configError}</p>;
+  if (!config) return <p>Configuración no disponible.</p>;
+
+  const BASE = config.appConfig.endpoints.baseUrl;
+  const ENDPOINT = config.appConfig.endpoints.sensors;
+
+  const reqConfig = {
+      baseUrl: `${BASE}/${ENDPOINT}`,
+      params: {}
+  }
+
   return (
-    <DataProvider apiUrl="https://contaminus.miarma.net/api/v1/sensors">
-      <ConfigProvider>
-        <HistoryChartsContent />
-      </ConfigProvider>
+    <DataProvider config={reqConfig}>
+      <HistoryChartsContent />
     </DataProvider>
   );
 };
diff --git a/frontend/src/components/PollutionMap.jsx b/frontend/src/components/PollutionMap.jsx
index 514ae00..2dd8a31 100644
--- a/frontend/src/components/PollutionMap.jsx
+++ b/frontend/src/components/PollutionMap.jsx
@@ -1,7 +1,5 @@
 import { MapContainer, TileLayer, Circle, Popup } from 'react-leaflet';
 
-
-import { ConfigProvider } from '../contexts/ConfigContext.jsx';
 import { useConfig } from '../contexts/ConfigContext.jsx';
 
 import { DataProvider } from '../contexts/DataContext.jsx';
@@ -41,23 +39,41 @@ const PollutionCircles = ({ data }) => {
 };
 
 const PollutionMap = () => {
+  const { config, configLoading, configError } = useConfig();
+  
+  if (configLoading) return <p>Cargando configuración...</p>;
+  if (configError) return <p>Error al cargar configuración: {configError}</p>;
+  if (!config) return <p>Configuración no disponible.</p>;
+
+  const BASE = config.appConfig.endpoints.baseUrl;
+  const ENDPOINT = config.appConfig.endpoints.sensors;
+
+  const reqConfig = {
+      baseUrl: `${BASE}/${ENDPOINT}`,
+      params: {}
+  }
+
   return (
-    <DataProvider apiUrl="https://contaminus.miarma.net/api/v1/sensors">
-      <ConfigProvider>
-        <PollutionMapContent />
-      </ConfigProvider>
+    <DataProvider config={reqConfig}>
+      <PollutionMapContent />
     </DataProvider>
   );
 };
 
 const PollutionMapContent = () => {
-  const { config } = useConfig();
+  const { config, configLoading, configError } = useConfig();
+  const { data, dataLoading, dataError } = useData();
+
+  if (configLoading) return <p>Cargando configuración...</p>;
+  if (configError) return <p>Error al cargar configuración: {configError}</p>;
+  if (!config) return <p>Configuración no disponible.</p>;
+
+  if (dataLoading) return <p>Cargando datos...</p>;
+  if (dataError) return <p>Error al cargar datos: {configError}</p>;
+  if (!data) return <p>Datos no disponibles.</p>;
+
   const SEVILLA = config?.userConfig.city;
 
-  const { data, loading } = useData();
-
-  if (loading) return <p>Cargando datos...</p>;
-
   const pollutionData = data.map((sensor) => ({
     lat: sensor.lat,
     lng: sensor.lon,
diff --git a/frontend/src/components/SummaryCards.jsx b/frontend/src/components/SummaryCards.jsx
index 5a14788..68ef1df 100644
--- a/frontend/src/components/SummaryCards.jsx
+++ b/frontend/src/components/SummaryCards.jsx
@@ -4,9 +4,28 @@ import CardContainer from './CardContainer';
 import { DataProvider } from '../contexts/DataContext';
 import { useData } from '../contexts/DataContext';
 
+import { useConfig } from '../contexts/ConfigContext';
+
 const SummaryCards = () => {
+    const { config, configLoading, configError } = useConfig();
+
+    if (configLoading) return <p>Cargando configuración...</p>;
+    if (configError) return <p>Error al cargar configuración: {configError}</p>;
+    if (!config) return <p>Configuración no disponible.</p>;
+
+    const BASE = config.appConfig.endpoints.baseUrl;
+    const ENDPOINT = config.appConfig.endpoints.sensors;
+
+    const reqConfig = {
+        baseUrl: `${BASE}/${ENDPOINT}`,
+        params: {
+            _sort: 'timestamp',
+            _order: 'desc'
+        }
+    }
+
     return (
-        <DataProvider apiUrl="https://contaminus.miarma.net/api/v1/sensors?_sort=timestamp&_order=desc">
+        <DataProvider config={reqConfig}>
             <SummaryCardsContent />
         </DataProvider>
     );
diff --git a/frontend/src/contexts/ConfigContext.jsx b/frontend/src/contexts/ConfigContext.jsx
index 94ab968..5cccf8b 100644
--- a/frontend/src/contexts/ConfigContext.jsx
+++ b/frontend/src/contexts/ConfigContext.jsx
@@ -5,8 +5,8 @@ const ConfigContext = createContext();
 
 export const ConfigProvider = ({ children }) => {
   const [config, setConfig] = useState(null);
-  const [loading, setLoading] = useState(true);
-  const [error, setError] = useState(null);
+  const [configLoading, setLoading] = useState(true);
+  const [configError, setError] = useState(null);
 
   useEffect(() => {
     const fetchConfig = async () => {
@@ -26,7 +26,7 @@ export const ConfigProvider = ({ children }) => {
   }, []);
 
   return (
-    <ConfigContext.Provider value={{ config, loading, error }}>
+    <ConfigContext.Provider value={{ config, configLoading, configError }}>
       {children}
     </ConfigContext.Provider>
   );
diff --git a/frontend/src/contexts/DataContext.jsx b/frontend/src/contexts/DataContext.jsx
index 6f8526a..7ff3153 100644
--- a/frontend/src/contexts/DataContext.jsx
+++ b/frontend/src/contexts/DataContext.jsx
@@ -3,15 +3,17 @@ import PropTypes from "prop-types";
 
 const DataContext = createContext();
 
-export const DataProvider = ({ children, apiUrl }) => {
+export const DataProvider = ({ children, config }) => {
   const [data, setData] = useState(null);
-  const [loading, setLoading] = useState(true);
-  const [error, setError] = useState(null);
+  const [dataLoading, setLoading] = useState(true);
+  const [dataError, setError] = useState(null);
 
   useEffect(() => {
     const fetchData = async () => {
       try {
-        const response = await fetch(apiUrl);
+        const queryParams = new URLSearchParams(config.params).toString();
+        const url = `${config.baseUrl}?${queryParams}`;
+        const response = await fetch(url);
         if (!response.ok) throw new Error("Error al obtener datos");
         const result = await response.json();
         setData(result);
@@ -23,10 +25,10 @@ export const DataProvider = ({ children, apiUrl }) => {
     };
 
     fetchData();
-  }, [apiUrl]);
+  }, [config]);
 
   return (
-    <DataContext.Provider value={{ data, loading, error }}>
+    <DataContext.Provider value={{ data, dataLoading, dataError }}>
       {children}
     </DataContext.Provider>
   );
@@ -34,7 +36,10 @@ export const DataProvider = ({ children, apiUrl }) => {
 
 DataProvider.propTypes = {
   children: PropTypes.node.isRequired,
-  apiUrl: PropTypes.string.isRequired,
+  config: PropTypes.shape({
+    baseUrl: PropTypes.string.isRequired,
+    params: PropTypes.object,
+  }).isRequired,
 };
 
 export const useData = () => useContext(DataContext);
\ No newline at end of file
diff --git a/frontend/src/css/Card.css b/frontend/src/css/Card.css
index a722456..975e0ca 100644
--- a/frontend/src/css/Card.css
+++ b/frontend/src/css/Card.css
@@ -39,6 +39,7 @@
     color: var(--primary-color);
     text-transform: uppercase;
     letter-spacing: 1px;
+    font-weight: 600;
 }
 
 p.card-text {
diff --git a/frontend/src/main.jsx b/frontend/src/main.jsx
index 20dbf24..f5c9d96 100644
--- a/frontend/src/main.jsx
+++ b/frontend/src/main.jsx
@@ -3,8 +3,15 @@ import { createRoot } from 'react-dom/client'
 import './css/index.css'
 import App from './components/App.jsx'
 
+import { ThemeProvider } from './contexts/ThemeContext.jsx'
+import { ConfigProvider } from './contexts/ConfigContext.jsx'
+
 createRoot(document.getElementById('root')).render(
   <StrictMode>
-    <App />
+    <ThemeProvider>
+        <ConfigProvider>
+          <App />
+        </ConfigProvider>
+      </ThemeProvider>
   </StrictMode>,
 )
diff --git a/frontend/src/pages/Home.jsx b/frontend/src/pages/Home.jsx
index 3717f10..b0e2172 100644
--- a/frontend/src/pages/Home.jsx
+++ b/frontend/src/pages/Home.jsx
@@ -12,7 +12,6 @@ const Home = () => {
             <Dashboard>
                 <SummaryCards />
                 <PollutionMap />
-                {/*  */}
                 <HistoryCharts />
             </Dashboard>
             <ThemeButton />