Initial ChatGPT Agent demo

2026-09-14 19:49:51 -04:00
commit 8790cfb1e2
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+import {
+  streamText,
+  convertToModelMessages,
+  stepCountIs,
+  pruneMessages,
+} from 'ai';
+import { createOpenRouter } from '@openrouter/ai-sdk-provider';
+import { tools } from '@/chat.config';
+
+const openrouter = createOpenRouter({
+  apiKey: process.env.OPENROUTER_API_KEY,
+});
+
+export async function POST(request: Request) {
+  try {
+    const { messages } = await request.json();
+
+    if (!process.env.OPENROUTER_API_KEY) {
+      return Response.json(
+        { error: 'OPENROUTER_API_KEY is not configured' },
+        { status: 503 }
+      );
+    }
+
+    const model = openrouter(
+      process.env.OPENROUTER_MODEL || 'openai/gpt-5.6-luna-pro'
+    );
+
+    const webSearchEnabled = Boolean(process.env.FIRECRAWL_API_KEY);
+
+    const instructions = webSearchEnabled
+      ? `You are an expert ChatGPT Agent with real-time access to the internet.
+
+Your capabilities:
+- Search the web using Firecrawl to find up-to-date information
+- Fetch and read full web pages to extract detailed content
+- Synthesize information from multiple sources into clear, accurate answers
+- Cite your sources inline so the user can verify information
+
+Guidelines:
+- Always search the web before answering questions that require current or factual information
+- Use multiple searches when needed to get comprehensive answers
+- Cross-reference sources for accuracy
+- Structure your responses clearly with headings, bullet points, and citations where appropriate
+- When fetching pages, extract only the relevant information
+- Be transparent about the sources you used
+- Today's date is ${new Date().toLocaleDateString('en-US', { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' })}`
+      : `You are a helpful AI research assistant. Answer clearly and accurately. You do not have live web access, so be transparent when a question requires current information. Today's date is ${new Date().toLocaleDateString('en-US', { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' })}.`;
+
+    const convertedMessages = await convertToModelMessages(messages);
+
+    const prunedMessages = pruneMessages({
+      messages: convertedMessages,
+      reasoning: 'all',
+      toolCalls: 'none',
+    });
+
+    const result = await streamText({
+      model,
+      instructions,
+      messages: prunedMessages,
+      tools: webSearchEnabled ? tools : {},
+      stopWhen: stepCountIs(20),
+      providerOptions: {
+        openrouter: {
+          reasoning: {
+            enabled: true,
+            effort: 'medium',
+          },
+        },
+      },
+    });
+
+    return result.toUIMessageStreamResponse({ sendReasoning: true });
+  } catch (error) {
+    console.error('Chat API error:', error);
+    return new Response(
+      JSON.stringify({ error: 'Failed to process chat request' }),
+      {
+        status: 500,
+        headers: { 'Content-Type': 'application/json' },
+      }
+    );
+  }
+}