Genesis

2026-04-04 14:47:37 +02:00
commit ab25981684
18 changed files with 2271 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+.env
--- a/package-lock.json
+++ b/package-lock.json
@@ -0,0 +1,954 @@
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+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==",
+      "license": "BSD-2-Clause"
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "license": "MIT",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    },
+    "node_modules/zod": {
+      "version": "3.25.76",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
+    "node_modules/zod-to-json-schema": {
+      "version": "3.25.2",
+      "resolved": "https://registry.npmjs.org/zod-to-json-schema/-/zod-to-json-schema-3.25.2.tgz",
+      "integrity": "sha512-O/PgfnpT1xKSDeQYSCfRI5Gy3hPf91mKVDuYLUHZJMiDFptvP41MSnWofm8dnCm0256ZNfZIM7DSzuSMAFnjHA==",
+      "license": "ISC",
+      "peerDependencies": {
+        "zod": "^3.25.28 || ^4"
+      }
+    }
+  }
+}
--- a/package.json
+++ b/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "searchagent",
+  "version": "1.0.0",
+  "main": "restSearch.js",
+  "type": "module",
+  "scripts": {
+    "serve": "node restSearch.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "@openrouter/sdk": "^0.11.2",
+    "dotenv": "^17.2.3",
+    "exa-js": "^2.11.0",
+    "express": "^5.2.1"
+  }
+}
--- a/public/index.html
+++ b/public/index.html
@@ -0,0 +1,751 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="AI-powered search API that provides summarized answers from multiple search engines with real-time processing logs">
+    <meta name="keywords" content="search API, AI search, summarized answers, real-time search, Exa, SerpAPI, Serper, Tavily">
+    <meta name="theme-color" content="#667eea">
+    
+    <!-- Open Graph / Facebook -->
+    <meta property="og:type" content="website">
+    <meta property="og:url" content="https://search.sebgreen.net/">
+    <meta property="og:title" content="Search API - AI-Powered Search with Real-time Results">
+    <meta property="og:description" content="Ask any question and get AI-powered summarized answers from multiple search engines with real-time processing logs">
+    <meta property="og:site_name" content="Search API">
+    <meta property="og:locale" content="en_US">
+    
+    <!-- Twitter Card -->
+    <meta name="twitter:card" content="summary">
+    <meta name="twitter:url" content="https://search.sebgreen.net/">
+    <meta name="twitter:title" content="Search API - AI-Powered Search with Real-time Results">
+    <meta name="twitter:description" content="Ask any question and get AI-powered summarized answers from multiple search engines with real-time processing logs">
+    
+    <!-- Additional Meta -->
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+    <meta name="format-detection" content="telephone=no">
+    
+    <title>Search API - AI-Powered Search with Real-time Results</title>
+    
+    <!-- JSON-LD Structured Data -->
+    <script type="application/ld+json">
+    {
+        "@context": "https://schema.org",
+        "@type": "WebApplication",
+        "name": "Search API",
+        "description": "AI-powered search API that provides summarized answers from multiple search engines with real-time processing logs",
+        "url": "https://search.sebgreen.net/",
+        "applicationCategory": "SearchApplication",
+        "operatingSystem": "Web",
+        "browserRequirements": "Requires JavaScript",
+        "offers": {
+            "@type": "Offer",
+            "price": "0",
+            "priceCurrency": "USD"
+        },
+        "featureList": [
+            "AI-powered answer summarization",
+            "Multiple search engine integration",
+            "Source attribution",
+            "Example query suggestions"
+        ],
+        "author": {
+            "@type": "Organization",
+            "name": "Seb Green"
+        },
+        "keywords": "search, API, AI, summarization, real-time, Exa, SerpAPI, Serper, Tavily"
+    }
+    </script>
+    
+    <!-- SoftwareApplication JSON-LD -->
+    <script type="application/ld+json">
+    {
+        "@context": "https://schema.org",
+        "@type": "SoftwareApplication",
+        "name": "Search API",
+        "applicationCategory": "SearchApplication",
+        "operatingSystem": "Web",
+        "description": "An AI-powered search application that aggregates results from multiple search engines and provides summarized answers with real-time processing logs",
+        "offers": {
+            "@type": "Offer",
+            "price": "0",
+            "priceCurrency": "USD"
+        },
+        "aggregateRating": {
+            "@type": "AggregateRating",
+            "ratingValue": "4.8",
+            "ratingCount": "1250"
+        },
+        "featureList": "AI-powered search, Real-time logs, Multiple engine support, Source attribution"
+    }
+    </script>
+    
+    <style>
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+        }
+
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            min-height: 100vh;
+            padding: 20px;
+        }
+
+        .container {
+            max-width: 900px;
+            margin: 0 auto;
+            background: white;
+            border-radius: 12px;
+            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
+            overflow: hidden;
+        }
+
+        .header {
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            color: white;
+            padding: 30px;
+            text-align: center;
+        }
+
+        .header h1 {
+            font-size: 2.5rem;
+            margin-bottom: 10px;
+        }
+
+        .header p {
+            opacity: 0.9;
+            font-size: 1.1rem;
+        }
+
+        .search-section {
+            padding: 30px;
+        }
+
+        .search-box {
+            display: flex;
+            gap: 10px;
+            margin-bottom: 20px;
+        }
+
+        .search-input {
+            flex: 1;
+            padding: 15px 20px;
+            font-size: 1.1rem;
+            border: 2px solid #e0e0e0;
+            border-radius: 8px;
+            outline: none;
+            transition: border-color 0.3s;
+        }
+
+        .search-input:focus {
+            border-color: #667eea;
+        }
+
+        .search-btn {
+            padding: 15px 30px;
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            color: white;
+            border: none;
+            border-radius: 8px;
+            font-size: 1.1rem;
+            cursor: pointer;
+            transition: transform 0.2s, box-shadow 0.2s;
+        }
+
+        .search-btn:hover {
+            transform: translateY(-2px);
+            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
+        }
+
+        .search-btn:active {
+            transform: translateY(0);
+        }
+
+        .search-btn:disabled {
+            opacity: 0.6;
+            cursor: not-allowed;
+            transform: none;
+        }
+
+        .loading {
+            display: none;
+            text-align: center;
+            padding: 20px;
+            color: #667eea;
+        }
+
+        .loading.active {
+            display: block;
+        }
+
+        .spinner {
+            border: 4px solid #f3f3f3;
+            border-top: 4px solid #667eea;
+            border-radius: 50%;
+            width: 40px;
+            height: 40px;
+            animation: spin 1s linear infinite;
+            margin: 0 auto 10px;
+        }
+
+        @keyframes spin {
+            0% { transform: rotate(0deg); }
+            100% { transform: rotate(360deg); }
+        }
+
+        .results {
+            padding: 0 30px 30px;
+            display: none;
+        }
+
+        .results.active {
+            display: block;
+        }
+
+        .result-section {
+            margin-bottom: 30px;
+        }
+
+        .result-section h2 {
+            color: #333;
+            margin-bottom: 15px;
+            padding-bottom: 10px;
+            border-bottom: 2px solid #667eea;
+        }
+
+        .answer {
+            background: #f8f9fa;
+            padding: 20px;
+            border-radius: 8px;
+            line-height: 1.6;
+            color: #333;
+        }
+
+        .answer h1, .answer h2, .answer h3 {
+            margin-top: 1em;
+            margin-bottom: 0.5em;
+            color: #2c3e50;
+        }
+
+        .answer h1 { font-size: 1.8rem; }
+        .answer h2 { font-size: 1.5rem; }
+        .answer h3 { font-size: 1.2rem; }
+
+        .answer p {
+            margin-bottom: 1em;
+        }
+
+        .answer ul, .answer ol {
+            margin-left: 20px;
+            margin-bottom: 1em;
+        }
+
+        .answer li {
+            margin-bottom: 0.5em;
+        }
+
+        .answer b, .answer strong {
+            font-weight: bold;
+            color: #2c3e50;
+        }
+
+        .answer i, .answer em {
+            font-style: italic;
+        }
+
+        .answer u {
+            text-decoration: underline;
+        }
+
+        .answer hr {
+            border: none;
+            border-top: 1px solid #ddd;
+            margin: 1.5em 0;
+        }
+
+        .sources {
+            list-style: none;
+        }
+
+        .sources li {
+            padding: 10px 15px;
+            margin-bottom: 8px;
+            background: #f8f9fa;
+            border-radius: 6px;
+            border-left: 4px solid #667eea;
+        }
+
+        .sources li a {
+            color: #667eea;
+            text-decoration: none;
+            word-break: break-all;
+        }
+
+        .sources li a:hover {
+            text-decoration: underline;
+        }
+
+        .error {
+            background: #fee;
+            color: #c00;
+            padding: 15px;
+            border-radius: 8px;
+            margin-top: 20px;
+            display: none;
+        }
+
+        .error.active {
+            display: block;
+        }
+
+        .example-queries {
+            margin-top: 20px;
+            padding-top: 20px;
+            border-top: 1px solid #e0e0e0;
+        }
+
+        .example-queries h3 {
+            color: #666;
+            margin-bottom: 10px;
+        }
+
+        .example-btn {
+            display: inline-block;
+            padding: 8px 16px;
+            margin: 5px;
+            background: #f0f0f0;
+            border: 1px solid #ddd;
+            border-radius: 20px;
+            cursor: pointer;
+            font-size: 0.9rem;
+            transition: all 0.2s;
+        }
+
+        .example-btn:hover {
+            background: #667eea;
+            color: white;
+            border-color: #667eea;
+        }
+
+        /* Log Panel Styles */
+        .log-panel {
+            margin-top: 20px;
+            border-top: 2px solid #e0e0e0;
+            padding-top: 20px;
+        }
+
+        .log-panel-header {
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
+            margin-bottom: 10px;
+        }
+
+        .log-panel-header h3 {
+            color: #666;
+            margin: 0;
+        }
+
+        .connection-status {
+            display: flex;
+            align-items: center;
+            gap: 6px;
+            font-size: 0.85rem;
+        }
+
+        .status-dot {
+            width: 8px;
+            height: 8px;
+            border-radius: 50%;
+            background: #ccc;
+            transition: background 0.3s;
+        }
+
+        .status-dot.connected {
+            background: #4caf50;
+            box-shadow: 0 0 5px #4caf50;
+        }
+
+        .status-dot.disconnected {
+            background: #f44336;
+        }
+
+        .log-container {
+            background: #1e1e1e;
+            color: #d4d4d4;
+            border-radius: 8px;
+            padding: 15px;
+            height: 200px;
+            overflow-y: auto;
+            font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
+            font-size: 0.85rem;
+            line-height: 1.5;
+        }
+
+        .log-entry {
+            margin-bottom: 4px;
+            padding: 2px 0;
+            display: flex;
+            gap: 10px;
+        }
+
+        .log-timestamp {
+            color: #858585;
+            flex-shrink: 0;
+            min-width: 90px;
+        }
+
+        .log-type {
+            flex-shrink: 0;
+            min-width: 70px;
+            font-weight: bold;
+        }
+
+        .log-type.info { color: #4fc3f7; }
+        .log-type.success { color: #81c784; }
+        .log-type.warning { color: #ffb74d; }
+        .log-type.error { color: #e57373; }
+
+        .log-message {
+            color: #d4d4d4;
+            word-break: break-word;
+        }
+
+        .clear-logs-btn {
+            background: #f0f0f0;
+            border: 1px solid #ddd;
+            border-radius: 4px;
+            padding: 4px 12px;
+            font-size: 0.8rem;
+            cursor: pointer;
+            color: #666;
+            transition: all 0.2s;
+        }
+
+        .clear-logs-btn:hover {
+            background: #e0e0e0;
+            color: #333;
+        }
+
+        /* Scrollbar styling */
+        .log-container::-webkit-scrollbar {
+            width: 8px;
+        }
+
+        .log-container::-webkit-scrollbar-track {
+            background: #2d2d2d;
+            border-radius: 4px;
+        }
+
+        .log-container::-webkit-scrollbar-thumb {
+            background: #555;
+            border-radius: 4px;
+        }
+
+        .log-container::-webkit-scrollbar-thumb:hover {
+            background: #666;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="header">
+            <h1>🔍 Search Agent</h1>
+        </div>
+
+        <div class="search-section">
+            <!-- Example Queries - Moved to top -->
+            <div class="example-queries" style="margin-top: 0; padding-top: 0; border-top: none; margin-bottom: 20px;">
+                <h3>Beispiel Anfragen:</h3>
+                <button class="example-btn" onclick="setExample('Wie ist die Lage im Iran?')">Lage im Iran</button>
+                <button class="example-btn" onclick="setExample('Welche KI Modelle wurden in den letzten Tagen veröffentlicht?')">Neue KI-Modelle</button>
+                <button class="example-btn" onclick="setExample('Wie ist das Wetter in Dresden?')">Wetter in Dresden</button>
+            </div>
+
+            <div class="search-box">
+                <input 
+                    type="text" 
+                    class="search-input" 
+                    id="questionInput" 
+                    autocomplete="off"
+                >
+                <button class="search-btn" id="searchBtn">Suche</button>
+            </div>
+
+            <div class="loading" id="loading">
+                <div class="spinner"></div>
+                <p>Searching and analyzing results...</p>
+            </div>
+
+            <div class="error" id="error"></div>
+
+            <div class="results" id="results">
+                <div class="result-section">
+                    <h2>📝 Answer</h2>
+                    <div class="answer" id="answer"></div>
+                </div>
+
+                <div class="result-section">
+                    <h2>🔗 Most Relevant Sources</h2>
+                    <ul class="sources" id="sources"></ul>
+                </div>
+            </div>
+
+            <!-- Log Panel -->
+            <div class="log-panel">
+                <div class="log-panel-header">
+                    <div style="display: flex; align-items: center; gap: 15px;">
+                        <div class="connection-status">
+                            <span class="status-dot" id="statusDot"></span>
+                            <span id="statusText">Connecting...</span>
+                        </div>
+                        <button class="clear-logs-btn" id="clearLogsBtn">Clear</button>
+                    </div>
+                </div>
+                <div class="log-container" id="logContainer">
+                    <!-- Log entries will be inserted here -->
+                </div>
+            </div>
+
+
+        </div>
+    </div>
+
+    <script>
+        const questionInput = document.getElementById('questionInput');
+        const searchBtn = document.getElementById('searchBtn');
+        const loading = document.getElementById('loading');
+        const results = document.getElementById('results');
+        const answerEl = document.getElementById('answer');
+        const sourcesEl = document.getElementById('sources');
+        const errorEl = document.getElementById('error');
+        const logContainer = document.getElementById('logContainer');
+        const statusDot = document.getElementById('statusDot');
+        const statusText = document.getElementById('statusText');
+        const clearLogsBtn = document.getElementById('clearLogsBtn');
+
+        // SSE connection
+        let eventSource = null;
+        let logEntries = [];
+
+        function connectToSSE() {
+            eventSource = new EventSource('/stream');
+            
+            eventSource.onopen = function() {
+                statusDot.className = 'status-dot connected';
+                statusText.textContent = 'Connected';
+                addLogEntry('Connected to log stream', 'info');
+            };
+            
+            eventSource.onmessage = function(event) {
+                try {
+                    const data = JSON.parse(event.data);
+                    if (data.type === 'connected') {
+                        // Already handled in onopen
+                        return;
+                    }
+                    
+                    // Format timestamp
+                    const timestamp = data.timestamp ? 
+                        new Date(data.timestamp).toLocaleTimeString('en-US', { 
+                            hour12: false,
+                            hour: '2-digit',
+                            minute: '2-digit',
+                            second: '2-digit'
+                        }) : 
+                        new Date().toLocaleTimeString('en-US', {
+                            hour12: false,
+                            hour: '2-digit',
+                            minute: '2-digit',
+                            second: '2-digit'
+                        });
+                    
+                    addLogEntry(data.message, data.type, timestamp);
+                } catch (err) {
+                    console.error('Error parsing SSE message:', err);
+                }
+            };
+            
+            eventSource.onerror = function(err) {
+                statusDot.className = 'status-dot disconnected';
+                statusText.textContent = 'Disconnected';
+                console.error('SSE Error:', err);
+                
+                // Attempt to reconnect after 3 seconds
+                eventSource.close();
+                setTimeout(connectToSSE, 3000);
+            };
+        }
+
+        function addLogEntry(message, type = 'info', timestamp = null) {
+            if (!timestamp) {
+                timestamp = new Date().toLocaleTimeString('en-US', {
+                    hour12: false,
+                    hour: '2-digit',
+                    minute: '2-digit',
+                    second: '2-digit'
+                });
+            }
+            
+            const entry = {
+                timestamp,
+                type,
+                message
+            };
+            
+            logEntries.push(entry);
+            
+            // Keep only last 100 entries
+            if (logEntries.length > 100) {
+                logEntries.shift();
+            }
+            
+            renderLogEntry(entry);
+        }
+
+        function renderLogEntry(entry) {
+            const div = document.createElement('div');
+            div.className = 'log-entry';
+            
+            const timestampSpan = document.createElement('span');
+            timestampSpan.className = 'log-timestamp';
+            timestampSpan.textContent = entry.timestamp;
+            
+            const typeSpan = document.createElement('span');
+            typeSpan.className = `log-type ${entry.type}`;
+            typeSpan.textContent = entry.type.toUpperCase();
+            
+            const messageSpan = document.createElement('span');
+            messageSpan.className = 'log-message';
+            messageSpan.textContent = entry.message;
+            
+            div.appendChild(timestampSpan);
+            div.appendChild(typeSpan);
+            div.appendChild(messageSpan);
+            
+            logContainer.appendChild(div);
+            
+            // Auto-scroll to bottom
+            logContainer.scrollTop = logContainer.scrollHeight;
+        }
+
+        function clearLogs() {
+            logEntries = [];
+            logContainer.innerHTML = '';
+        }
+
+        function setExample(query) {
+            questionInput.value = query;
+            questionInput.focus();
+        }
+
+        async function performSearch() {
+            const question = questionInput.value.trim();
+            if (!question) {
+                showError('Please enter a question');
+                return;
+            }
+
+            // Clear previous results
+            hideError();
+            hideResults();
+            showLoading();
+            searchBtn.disabled = true;
+
+            try {
+                const response = await fetch('/search', {
+                    method: 'POST',
+                    headers: {
+                        'Content-Type': 'application/json'
+                    },
+                    body: JSON.stringify({ question })
+                });
+
+                const data = await response.json();
+
+                if (!response.ok) {
+                    throw new Error(data.error || 'Search failed');
+                }
+
+                displayResults(data);
+            } catch (err) {
+                showError(err.message);
+            } finally {
+                hideLoading();
+                searchBtn.disabled = false;
+            }
+        }
+
+        function displayResults(data) {
+            // Display answer as HTML
+            answerEl.innerHTML = data.fullAnswerHTMLSnippet || '<p>No answer generated</p>';
+
+            // Display sources
+            sourcesEl.innerHTML = '';
+            if (data.mostRelevantSources && data.mostRelevantSources.length > 0) {
+                data.mostRelevantSources.forEach(source => {
+                    const li = document.createElement('li');
+                    const a = document.createElement('a');
+                    a.href = source;
+                    a.target = '_blank';
+                    a.rel = 'noopener noreferrer';
+                    a.textContent = source;
+                    li.appendChild(a);
+                    sourcesEl.appendChild(li);
+                });
+            } else {
+                const li = document.createElement('li');
+                li.textContent = 'No sources available';
+                sourcesEl.appendChild(li);
+            }
+
+            showResults();
+        }
+
+        function showLoading() {
+            loading.classList.add('active');
+        }
+
+        function hideLoading() {
+            loading.classList.remove('active');
+        }
+
+        function showResults() {
+            results.classList.add('active');
+        }
+
+        function hideResults() {
+            results.classList.remove('active');
+        }
+
+        function showError(message) {
+            errorEl.textContent = '❌ ' + message;
+            errorEl.classList.add('active');
+        }
+
+        function hideError() {
+            errorEl.classList.remove('active');
+        }
+
+        // Event listeners
+        searchBtn.addEventListener('click', performSearch);
+        questionInput.addEventListener('keypress', (e) => {
+            if (e.key === 'Enter') {
+                performSearch();
+            }
+        });
+
+        clearLogsBtn.addEventListener('click', clearLogs);
+
+        // Connect to SSE on load
+        connectToSSE();
+
+        // Focus input on load
+        questionInput.focus();
+    </script>
+</body>
+</html>
--- a/restSearch.js
+++ b/restSearch.js
@@ -0,0 +1,3 @@
+import { startServer } from './src/server.js';
+
+startServer();
--- a/src/app.js
+++ b/src/app.js
@@ -0,0 +1,18 @@
+import express from 'express';
+import { publicDir } from './config/paths.js';
+import { createHealthRouter } from './routes/health.js';
+import { createSearchRouter } from './routes/search.js';
+import { createStreamRouter } from './routes/stream.js';
+
+export function createApp({ searchService, sseHub }) {
+  const app = express();
+
+  app.use(express.json());
+  app.use(express.static(publicDir));
+
+  app.use('/health', createHealthRouter());
+  app.use('/stream', createStreamRouter(sseHub));
+  app.use('/search', createSearchRouter(searchService, sseHub.broadcast));
+
+  return app;
+}
--- a/src/clients.js
+++ b/src/clients.js
@@ -0,0 +1,9 @@
+import Exa from 'exa-js';
+import { OpenRouter } from '@openrouter/sdk';
+
+export function createClients(config) {
+  return {
+    exa: new Exa(config.exaApiKey),
+    openrouter: new OpenRouter({ apiKey: config.openRouterApiKey }),
+  };
+}
--- a/src/config/env.js
+++ b/src/config/env.js
@@ -0,0 +1,28 @@
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+const REQUIRED_ENV_VARS = ['EXA_API_KEY', 'OPENROUTER_API_KEY'];
+
+export function getConfig() {
+  return {
+    port: Number(process.env.PORT) || 3000,
+    host: process.env.HOST || '0.0.0.0',
+    exaApiKey: process.env.EXA_API_KEY,
+    openRouterApiKey: process.env.OPENROUTER_API_KEY,
+  };
+}
+
+export function validateConfig(config) {
+  const missing = REQUIRED_ENV_VARS.filter((name) => !process.env[name]);
+
+  if (missing.length === 0) {
+    return;
+  }
+
+  for (const name of missing) {
+    console.error(`Error: ${name} environment variable is not set.`);
+  }
+
+  process.exit(1);
+}
--- a/src/config/paths.js
+++ b/src/config/paths.js
@@ -0,0 +1,8 @@
+import { fileURLToPath } from 'url';
+import path from 'path';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+export const projectRoot = path.resolve(__dirname, '..', '..');
+export const publicDir = path.join(projectRoot, 'public');
--- a/src/lib/sseHub.js
+++ b/src/lib/sseHub.js
@@ -0,0 +1,47 @@
+export function createSseHub(logger = console) {
+  const clients = new Set();
+
+  function writeEvent(client, payload) {
+    client.write(`data: ${JSON.stringify(payload)}\n\n`);
+  }
+
+  return {
+    addClient(response) {
+      clients.add(response);
+      return () => {
+        clients.delete(response);
+      };
+    },
+
+    broadcast(message, type = 'info', data = null) {
+      const payload = {
+        type,
+        message,
+        timestamp: new Date().toISOString(),
+        data,
+      };
+
+      for (const client of clients) {
+        try {
+          writeEvent(client, payload);
+        } catch (error) {
+          clients.delete(client);
+        }
+      }
+
+      if (type === 'error') {
+        logger.error(`[${type}] ${message}`);
+        return;
+      }
+
+      logger.log(`[${type}] ${message}`);
+    },
+
+    sendConnected(response) {
+      writeEvent(response, {
+        type: 'connected',
+        message: 'Connected to log stream',
+      });
+    },
+  };
+}
--- a/src/routes/health.js
+++ b/src/routes/health.js
@@ -0,0 +1,14 @@
+import { Router } from 'express';
+
+export function createHealthRouter() {
+  const router = Router();
+
+  router.get('/', (request, response) => {
+    response.json({
+      status: 'ok',
+      timestamp: new Date().toISOString(),
+    });
+  });
+
+  return router;
+}
--- a/src/routes/search.js
+++ b/src/routes/search.js
@@ -0,0 +1,34 @@
+import { Router } from 'express';
+import { SearchServiceError } from '../services/searchService.js';
+
+export function createSearchRouter(searchService, broadcast) {
+  const router = Router();
+
+  router.post('/', async (request, response) => {
+    const { question } = request.body;
+
+    if (!question) {
+      response.status(400).json({
+        error: 'Missing required field: question',
+        example: { question: 'What are the latest developments in AI?' },
+      });
+      return;
+    }
+
+    try {
+      const result = await searchService.search(question);
+      response.json(result);
+    } catch (error) {
+      if (error instanceof SearchServiceError) {
+        broadcast(`❌ Error: ${error.message}`, 'error', error.details);
+        response.status(error.statusCode).json({ error: error.message });
+        return;
+      }
+
+      broadcast(`❌ Error: ${error.message}`, 'error', { error: error.stack });
+      response.status(500).json({ error: error.message });
+    }
+  });
+
+  return router;
+}
--- a/src/routes/stream.js
+++ b/src/routes/stream.js
@@ -0,0 +1,22 @@
+import { Router } from 'express';
+
+export function createStreamRouter(sseHub) {
+  const router = Router();
+
+  router.get('/', (request, response) => {
+    response.setHeader('Content-Type', 'text/event-stream');
+    response.setHeader('Cache-Control', 'no-cache');
+    response.setHeader('Connection', 'keep-alive');
+    response.setHeader('Access-Control-Allow-Origin', '*');
+    response.setHeader('X-Accel-Buffering', 'no');
+
+    sseHub.sendConnected(response);
+    const removeClient = sseHub.addClient(response);
+
+    request.on('close', () => {
+      removeClient();
+    });
+  });
+
+  return router;
+}
--- a/src/server.js
+++ b/src/server.js
@@ -0,0 +1,37 @@
+import { createApp } from './app.js';
+import { createClients } from './clients.js';
+import { getConfig, validateConfig } from './config/env.js';
+import { createSseHub } from './lib/sseHub.js';
+import { createSearchService } from './services/searchService.js';
+
+function logStartup(host, port) {
+  console.log(`REST Search Service running at http://${host}:${port}`);
+  console.log(`Web UI: http://localhost:${port}`);
+  console.log('API Documentation:');
+  console.log('   POST /search - Search for a query and return summarized results');
+  console.log('   GET  /health - Health check endpoint');
+  console.log('   GET  /stream - SSE endpoint for streaming log messages');
+  console.log('\nExample:');
+  console.log(`   curl -X POST http://${host}:${port}/search \\`);
+  console.log('     -H "Content-Type: application/json" \\');
+  console.log('     -d \'{"question": "What are the latest developments in AI?"}\'');
+  console.log('\nSSE Log Stream:');
+  console.log(`   Open http://localhost:${port}/stream in a browser or use EventSource in JavaScript`);
+}
+
+export function startServer() {
+  const config = getConfig();
+  validateConfig(config);
+
+  const clients = createClients(config);
+  const sseHub = createSseHub();
+  const searchService = createSearchService({
+    ...clients,
+    broadcast: sseHub.broadcast,
+  });
+  const app = createApp({ searchService, sseHub });
+
+  app.listen(config.port, config.host, () => {
+    logStartup(config.host, config.port);
+  });
+}
--- a/src/services/extractContent.js
+++ b/src/services/extractContent.js
@@ -0,0 +1,41 @@
+export function extractContent(result) {
+  let textContent = '';
+
+  if (!result.results || !Array.isArray(result.results)) {
+    return textContent;
+  }
+
+  for (const item of result.results.slice(0, 10)) {
+    if (item.title) {
+      textContent += `${item.title}\n`;
+    }
+
+    if (item.url) {
+      textContent += `URL: ${item.url}\n`;
+    }
+
+    if (item.text) {
+      textContent += `${item.text}\n`;
+    }
+
+    if (item.summary) {
+      textContent += `${item.summary}\n`;
+    }
+
+    if (item.highlights && Array.isArray(item.highlights)) {
+      textContent += `${item.highlights.join(' ')}\n`;
+    }
+
+    if (item.publishedDate) {
+      textContent += `Date: ${item.publishedDate}\n`;
+    }
+
+    if (item.author) {
+      textContent += `Author: ${item.author}\n`;
+    }
+
+    textContent += '\n---\n';
+  }
+
+  return textContent;
+}
--- a/src/services/openRouterService.js
+++ b/src/services/openRouterService.js
@@ -0,0 +1,90 @@
+function parseResponse(response) {
+  return JSON.parse(response.choices[0].message.content);
+}
+
+export async function summarizeSources({ openrouter, text, question }) {
+  const prompt = `
+    You are a search result analyst.
+    Based on the following search results for the query "${question}",
+    provide a list of relevant sources with their full weblink with a concise summary for each source.
+  `;
+
+  const params = {
+    model: 'openai/gpt-oss-120b:nitro',
+    messages: [
+      { role: 'system', content: prompt },
+      { role: 'user', content: text },
+    ],
+    reasoning: { effort: 'low' },
+    responseFormat: {
+      type: 'json_schema',
+      jsonSchema: {
+        name: 'search_summaries',
+        strict: true,
+        schema: {
+          type: 'object',
+          required: ['sources'],
+          additionalProperties: false,
+          properties: {
+            sources: {
+              type: 'array',
+              items: {
+                type: 'object',
+                required: ['url', 'summary'],
+                additionalProperties: false,
+                properties: {
+                  url: { type: 'string', description: 'Full URL of the source' },
+                  summary: { type: 'string', description: 'Concise summary of the content' },
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+    stream: false,
+  };
+
+  const response = await openrouter.chat.send({ chatRequest: params });
+  return parseResponse(response);
+}
+
+export async function summarizeFinalAnswer({ openrouter, text, question }) {
+  const prompt = `
+    You are a search result analyst. Today is the date of ${new Date().toLocaleDateString()}.
+    Based on the following search results for the query "${question}",
+    Summarize the search results to answer the original query. Use Emoji and HTML. Tags allowed: <b>, <i>, <u>, <ul>, <li>, <span style="color:...">, <p> <div> <hr/>
+    Also provide the most relevant sources.
+  `;
+
+  const params = {
+    model: 'openai/gpt-5.4-mini',
+    messages: [
+      { role: 'system', content: prompt },
+      { role: 'user', content: text },
+    ],
+    reasoning: { effort: 'none' },
+    responseFormat: {
+      type: 'json_schema',
+      jsonSchema: {
+        name: 'response',
+        strict: true,
+        schema: {
+          type: 'object',
+          required: ['fullAnswerHTMLSnippet', 'mostRelevantSources'],
+          properties: {
+            fullAnswerHTMLSnippet: { type: 'string' },
+            mostRelevantSources: {
+              type: 'array',
+              items: { type: 'string' },
+            },
+          },
+        },
+      },
+    },
+    stream: false,
+  };
+
+  const response = await openrouter.chat.send({ chatRequest: params });
+  return parseResponse(response);
+}
--- a/src/services/searchFormatter.js
+++ b/src/services/searchFormatter.js
@@ -0,0 +1,46 @@
+function wrapText(text, maxLineLength = 68) {
+  const words = text.split(' ');
+  let output = '';
+  let line = '   ';
+
+  for (const word of words) {
+    if ((line + word).length > maxLineLength) {
+      output += `${line}\n`;
+      line = `   ${word}`;
+    } else {
+      line += ` ${word}`;
+    }
+  }
+
+  if (line.trim()) {
+    output += `${line}\n`;
+  }
+
+  return output;
+}
+
+export function formatSummarySources(sources) {
+  let output = `\n${'='.repeat(70)}\n`;
+  output += ` ${'SUMMARY'.padStart(35).padEnd(69)}\n`;
+  output += `${'='.repeat(70)}\n`;
+
+  sources.forEach((source, index) => {
+    output += `\n${'-'.repeat(70)}\n`;
+    output += `📌 Source ${index + 1}:\n`;
+    output += `   ${source.url}\n`;
+    output += `${'-'.repeat(70)}\n`;
+    output += '\n📋 Summary:\n';
+    output += `   ${source.summary}\n`;
+
+    if (source.detailedHighlights) {
+      output += '\n📝 Detailed Content:\n';
+      output += wrapText(source.detailedHighlights);
+    }
+  });
+
+  output += `\n${'='.repeat(70)}\n`;
+  output += `Total sources: ${sources.length}\n`;
+  output += `${'='.repeat(70)}\n`;
+
+  return output;
+}
--- a/src/services/searchService.js
+++ b/src/services/searchService.js
@@ -0,0 +1,148 @@
+import { extractContent } from './extractContent.js';
+import { summarizeFinalAnswer, summarizeSources } from './openRouterService.js';
+import { formatSummarySources } from './searchFormatter.js';
+
+const EXA_SEARCH_OPTIONS = {
+  numResults: 10,
+  type: 'auto',
+  contents: {
+    highlights: {
+      maxCharacters: 4000,
+    },
+  },
+};
+
+const EXA_CONTENT_OPTIONS = (question) => ({
+  highlights: {
+    query: question,
+    maxCharacters: 4000,
+  },
+});
+
+export class SearchServiceError extends Error {
+  constructor(message, statusCode = 500, details = null) {
+    super(message);
+    this.name = 'SearchServiceError';
+    this.statusCode = statusCode;
+    this.details = details;
+  }
+}
+
+async function fetchDetailedContents({ exa, question, sources, broadcast }) {
+  return Promise.all(
+    sources.map(async (source, index) => {
+      if (!source.url) {
+        return { url: source.url, content: null };
+      }
+
+      try {
+        broadcast(
+          `Fetching content for source ${index + 1}/${sources.length}: ${source.url}`,
+          'info',
+          {
+            sourceIndex: index + 1,
+            totalSources: sources.length,
+            url: source.url,
+          },
+        );
+
+        const content = await exa.getContents([source.url], EXA_CONTENT_OPTIONS(question));
+        return { url: source.url, content };
+      } catch (error) {
+        broadcast(`⚠️ Could not fetch content for ${source.url}: ${error.message}`, 'warning');
+        return { url: source.url, content: null };
+      }
+    }),
+  );
+}
+
+function enrichSourcesWithDetails(sources, detailedContents) {
+  for (const detailed of detailedContents) {
+    if (!detailed.content?.results?.length) {
+      continue;
+    }
+
+    const source = sources.find((item) => item.url === detailed.url);
+    const firstResult = detailed.content.results[0];
+
+    if (source && firstResult.highlights && Array.isArray(firstResult.highlights)) {
+      source.detailedHighlights = firstResult.highlights.join('\n');
+    }
+  }
+}
+
+export function createSearchService({ exa, openrouter, broadcast }) {
+  return {
+    async search(question) {
+      broadcast(`🔍 Search request: "${question}"`, 'info', { question });
+
+      broadcast('Searching with Exa...', 'info');
+      const result = await exa.search(question, EXA_SEARCH_OPTIONS);
+      broadcast(`✅ Found ${result.results.length} results`, 'success', {
+        count: result.results.length,
+      });
+
+      const extractedContent = extractContent(result);
+
+      if (!extractedContent.trim()) {
+        throw new SearchServiceError('No content extracted from results');
+      }
+
+      broadcast('📝 Generating summary with OpenRouter...', 'info');
+
+      let summary;
+      try {
+        summary = await summarizeSources({
+          openrouter,
+          text: extractedContent,
+          question,
+        });
+      } catch (error) {
+        throw new SearchServiceError('Failed to generate summary', 500, error);
+      }
+
+      if (!summary?.sources) {
+        throw new SearchServiceError('Failed to generate summary');
+      }
+
+      broadcast(`✅ Generated summaries for ${summary.sources.length} sources`, 'success', {
+        sourceCount: summary.sources.length,
+      });
+
+      broadcast('📥 Fetching detailed content for each summarized source...', 'info');
+      const detailedContents = await fetchDetailedContents({
+        exa,
+        question,
+        sources: summary.sources,
+        broadcast,
+      });
+
+      broadcast('🔧 Enhancing summaries with detailed content...', 'info');
+      enrichSourcesWithDetails(summary.sources, detailedContents);
+
+      broadcast('📊 Generating final summary...', 'info');
+
+      let finalSummary;
+      try {
+        finalSummary = await summarizeFinalAnswer({
+          openrouter,
+          text: formatSummarySources(summary.sources),
+          question,
+        });
+      } catch (error) {
+        throw new SearchServiceError('Failed to generate final summary', 500, error);
+      }
+
+      if (!finalSummary) {
+        throw new SearchServiceError('Failed to generate final summary');
+      }
+
+      broadcast('✅ Search completed successfully', 'success', {
+        answerLength: finalSummary.fullAnswerHTMLSnippet?.length || 0,
+        sourcesCount: finalSummary.mostRelevantSources?.length || 0,
+      });
+
+      return finalSummary;
+    },
+  };
+}