With build

.gitignore

@@ -1,2 +1,2 @@
 node_modules
-build
+#build

build/index.js

@@ -0,0 +1,165 @@
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import { z } from "zod";
+const NWS_API_BASE = "https://api.weather.gov";
+const USER_AGENT = "weather-app/1.0";
+// Create server instance
+const server = new McpServer({
+    name: "weather",
+    version: "1.0.0",
+    capabilities: {
+        resources: {},
+        tools: {},
+    },
+});
+// Helper function for making NWS API requests
+async function makeNWSRequest(url) {
+    const headers = {
+        "User-Agent": USER_AGENT,
+        Accept: "application/geo+json",
+    };
+    try {
+        const response = await fetch(url, { headers });
+        if (!response.ok) {
+            throw new Error(`HTTP error! status: ${response.status}`);
+        }
+        return (await response.json());
+    }
+    catch (error) {
+        console.error("Error making NWS request:", error);
+        return null;
+    }
+}
+// Format alert data
+function formatAlert(feature) {
+    const props = feature.properties;
+    return [
+        `Event: ${props.event || "Unknown"}`,
+        `Area: ${props.areaDesc || "Unknown"}`,
+        `Severity: ${props.severity || "Unknown"}`,
+        `Status: ${props.status || "Unknown"}`,
+        `Headline: ${props.headline || "No headline"}`,
+        "---",
+    ].join("\n");
+}
+// Register weather tools
+server.tool("get-alerts", "Get weather alerts for a state", {
+    state: z.string().length(2).describe("Two-letter state code (e.g. CA, NY)"),
+}, async ({ state }) => {
+    const stateCode = state.toUpperCase();
+    const alertsUrl = `${NWS_API_BASE}/alerts?area=${stateCode}`;
+    const alertsData = await makeNWSRequest(alertsUrl);
+    if (!alertsData) {
+        return {
+            content: [
+                {
+                    type: "text",
+                    text: "Failed to retrieve alerts data",
+                },
+            ],
+        };
+    }
+    const features = alertsData.features || [];
+    if (features.length === 0) {
+        return {
+            content: [
+                {
+                    type: "text",
+                    text: `No active alerts for ${stateCode}`,
+                },
+            ],
+        };
+    }
+    const formattedAlerts = features.map(formatAlert);
+    const alertsText = `Active alerts for ${stateCode}:\n\n${formattedAlerts.join("\n")}`;
+    return {
+        content: [
+            {
+                type: "text",
+                text: alertsText,
+            },
+        ],
+    };
+});
+server.tool("get-forecast", "Get weather forecast for a location", {
+    latitude: z.number().min(-90).max(90).describe("Latitude of the location"),
+    longitude: z
+        .number()
+        .min(-180)
+        .max(180)
+        .describe("Longitude of the location"),
+}, async ({ latitude, longitude }) => {
+    // Get grid point data
+    const pointsUrl = `${NWS_API_BASE}/points/${latitude.toFixed(4)},${longitude.toFixed(4)}`;
+    const pointsData = await makeNWSRequest(pointsUrl);
+    if (!pointsData) {
+        return {
+            content: [
+                {
+                    type: "text",
+                    text: `Failed to retrieve grid point data for coordinates: ${latitude}, ${longitude}. This location may not be supported by the NWS API (only US locations are supported).`,
+                },
+            ],
+        };
+    }
+    const forecastUrl = pointsData.properties?.forecast;
+    if (!forecastUrl) {
+        return {
+            content: [
+                {
+                    type: "text",
+                    text: "Failed to get forecast URL from grid point data",
+                },
+            ],
+        };
+    }
+    // Get forecast data
+    const forecastData = await makeNWSRequest(forecastUrl);
+    if (!forecastData) {
+        return {
+            content: [
+                {
+                    type: "text",
+                    text: "Failed to retrieve forecast data",
+                },
+            ],
+        };
+    }
+    const periods = forecastData.properties?.periods || [];
+    if (periods.length === 0) {
+        return {
+            content: [
+                {
+                    type: "text",
+                    text: "No forecast periods available",
+                },
+            ],
+        };
+    }
+    // Format forecast periods
+    const formattedForecast = periods.map((period) => [
+        `${period.name || "Unknown"}:`,
+        `Temperature: ${period.temperature || "Unknown"}°${period.temperatureUnit || "F"}`,
+        `Wind: ${period.windSpeed || "Unknown"} ${period.windDirection || ""}`,
+        `${period.shortForecast || "No forecast available"}`,
+        "---",
+    ].join("\n"));
+    const forecastText = `Forecast for ${latitude}, ${longitude}:\n\n${formattedForecast.join("\n")}`;
+    return {
+        content: [
+            {
+                type: "text",
+                text: forecastText,
+            },
+        ],
+    };
+});
+async function main() {
+    const transport = new StdioServerTransport();
+    await server.connect(transport);
+    console.error("Weather MCP Server running on stdio");
+}
+main().catch((error) => {
+    console.error("Fatal error in main():", error);
+    process.exit(1);
+});

package-lock.json

@@ -12,6 +12,9 @@
         "@modelcontextprotocol/sdk": "^1.13.0",
         "zod": "^3.25.67"
       },
+      "bin": {
+        "mcp": "build/index.js"
+      },
       "devDependencies": {
         "@types/node": "^24.0.3",
         "typescript": "^5.8.3"