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server/_core/env.ts

@@ -6,5 +6,5 @@ export const ENV = {
   ownerOpenId: process.env.OWNER_OPEN_ID ?? "",
   isProduction: process.env.NODE_ENV === "production",
   forgeApiUrl: process.env.BUILT_IN_FORGE_API_URL ?? "",
-  forgeApiKey: process.env.BUILT_IN_FORGE_API_KEY ?? "",
+  forgeApiKey: process.env.BUILT_IN_FORGE_API_KEY ?? process.env.HF_TOKEN ?? "",
 };

server/_core/llm.ts

@@ -209,14 +209,20 @@ const normalizeToolChoice = (
   return toolChoice;
 };
 
-const resolveApiUrl = () =>
-  ENV.forgeApiUrl && ENV.forgeApiUrl.trim().length > 0
-    ? `${ENV.forgeApiUrl.replace(/\/$/, "")}/v1/chat/completions`
-    : "https://forge.manus.im/v1/chat/completions";
+const resolveApiUrl = () => {
+  if (ENV.forgeApiUrl && ENV.forgeApiUrl.trim().length > 0) {
+    return `${ENV.forgeApiUrl.replace(/\/$/, "")}/v1/chat/completions`;
+  }
+  // If we are using HF_TOKEN, we might want to use HF Inference API
+  if (process.env.HF_TOKEN && !process.env.BUILT_IN_FORGE_API_KEY) {
+    return "https://api-inference.huggingface.co/v1/chat/completions";
+  }
+  return "https://forge.manus.im/v1/chat/completions";
+};
 
 const assertApiKey = () => {
   if (!ENV.forgeApiKey) {
-    throw new Error("OPENAI_API_KEY is not configured");
+    throw new Error("No API Key found. Please configure HF_TOKEN or BUILT_IN_FORGE_API_KEY in Space Secrets.");
   }
 };
 
@@ -280,7 +286,7 @@ export async function invokeLLM(params: InvokeParams): Promise<InvokeResult> {
   } = params;
 
   const payload: Record<string, unknown> = {
-    model: "gemini-2.5-flash",
+    model: process.env.HF_TOKEN && !process.env.BUILT_IN_FORGE_API_KEY ? "Qwen/Qwen2.5-72B-Instruct" : "gemini-2.5-flash",
     messages: messages.map(normalizeMessage),
   };