Initial commit: RA-H Open Source Edition

Local-first knowledge management system with BYO API keys. Features: - 3-panel UI (Nodes | Focus | Helpers) - SQLite + sqlite-vec for vector search - Agent system (Easy/Hard mode orchestrators) - Content extraction (YouTube, PDF, web) - Integrate workflow for connection discovery - Dimension system with auto-assignment Tech stack: - Next.js 15 + TypeScript + Tailwind CSS - Anthropic (Claude) + OpenAI (GPT) via Vercel AI SDK Setup: npm install && npm rebuild better-sqlite3 scripts/dev/bootstrap-local.sh npm run dev MIT License
2025-12-15 16:14:28 +11:00
commit 733d1c3407
226 changed files with 46231 additions and 0 deletions
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+import { NextResponse } from 'next/server';
+import type { CacheStats } from '@/types/prompts';
+
+declare global {
+  // eslint-disable-next-line no-var
+  var lastCacheStats: CacheStats | undefined;
+}
+
+export async function GET() {
+  try {
+    const stats = global.lastCacheStats;
+    
+    if (!stats) {
+      return NextResponse.json({
+        error: 'No cache statistics available yet',
+        message: 'Send a message to ra-h to generate cache stats'
+      }, { status: 404 });
+    }
+    
+    const hitRate = stats.cacheReadInputTokens > 0 ? 'HIT' : 'MISS';
+    const totalInputTokens = stats.inputTokens + stats.cacheCreationInputTokens + stats.cacheReadInputTokens;
+    
+    // Cost calculation (Sonnet 4.5 pricing)
+    const baseCost = 3.0; // $3 per million input tokens
+    const writeCost = baseCost * 1.25; // $3.75 per million
+    const readCost = baseCost * 0.1; // $0.30 per million
+    
+    const actualCost = (
+      (stats.inputTokens * baseCost) +
+      (stats.cacheCreationInputTokens * writeCost) +
+      (stats.cacheReadInputTokens * readCost)
+    ) / 1_000_000;
+    
+    const noCacheCost = (totalInputTokens * baseCost) / 1_000_000;
+    const costSavingsPercentage = noCacheCost > 0 
+      ? Math.round(((noCacheCost - actualCost) / noCacheCost) * 100)
+      : 0;
+    
+    return NextResponse.json({
+      status: 'success',
+      timestamp: new Date().toISOString(),
+      lastRequest: {
+        hitRate,
+        tokens: {
+          cacheWrite: stats.cacheCreationInputTokens,
+          cacheRead: stats.cacheReadInputTokens,
+          regular: stats.inputTokens,
+          totalInput: totalInputTokens,
+          output: stats.outputTokens
+        },
+        savings: {
+          tokenPercentage: stats.savingsPercentage,
+          costPercentage: costSavingsPercentage,
+          actualCostUSD: actualCost.toFixed(6),
+          noCacheCostUSD: noCacheCost.toFixed(6),
+          savedUSD: (noCacheCost - actualCost).toFixed(6)
+        }
+      }
+    });
+  } catch (error) {
+    const errorMessage = error instanceof Error ? error.message : String(error);
+    return NextResponse.json(
+      { error: 'Failed to fetch cache stats', details: errorMessage },
+      { status: 500 }
+    );
+  }
+}