From cf5328f2d4626cf7cc506e69bb0345db332e27e3 Mon Sep 17 00:00:00 2001
From: Elie Habib <elie.habib@gmail.com>
Date: Mon, 30 Mar 2026 11:08:14 +0400
Subject: [PATCH] fix(llm): pin LLM edge functions to US/EU regions to prevent
 geo-block 403s (#2541)

OpenRouter returns 403 'This model is not available in your region' when
Vercel routes through edge nodes in regions where Google Gemini is blocked.
Pin chat-analyst, news, and intelligence edge functions to iad1/lhr1/fra1/sfo1.

Also improves error logging in callLlmReasoningStream to include model name
and full response body on non-2xx for easier future diagnosis.
---
 api/chat-analyst.ts          | 2 +-
 api/intelligence/v1/[rpc].ts | 2 +-
 api/news/v1/[rpc].ts         | 2 +-
 server/_shared/llm.ts        | 3 ++-
 4 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/api/chat-analyst.ts b/api/chat-analyst.ts
index d00a61b79..e089cd5ec 100644
--- a/api/chat-analyst.ts
+++ b/api/chat-analyst.ts
@@ -11,7 +11,7 @@
  *   data: {"error":"..."}    — on auth/llm failure
  */
 
-export const config = { runtime: 'edge' };
+export const config = { runtime: 'edge', regions: ['iad1', 'lhr1', 'fra1', 'sfo1'] };
 
 // @ts-expect-error — JS module, no declaration file
 import { getCorsHeaders } from './_cors.js';
diff --git a/api/intelligence/v1/[rpc].ts b/api/intelligence/v1/[rpc].ts
index 5f7a67bd3..61ee7a179 100644
--- a/api/intelligence/v1/[rpc].ts
+++ b/api/intelligence/v1/[rpc].ts
@@ -1,4 +1,4 @@
-export const config = { runtime: 'edge' };
+export const config = { runtime: 'edge', regions: ['iad1', 'lhr1', 'fra1', 'sfo1'] };
 
 import { createDomainGateway, serverOptions } from '../../../server/gateway';
 import { createIntelligenceServiceRoutes } from '../../../src/generated/server/worldmonitor/intelligence/v1/service_server';
diff --git a/api/news/v1/[rpc].ts b/api/news/v1/[rpc].ts
index 72dcfc08f..a0a498a0d 100644
--- a/api/news/v1/[rpc].ts
+++ b/api/news/v1/[rpc].ts
@@ -1,4 +1,4 @@
-export const config = { runtime: 'edge' };
+export const config = { runtime: 'edge', regions: ['iad1', 'lhr1', 'fra1', 'sfo1'] };
 
 import { createDomainGateway, serverOptions } from '../../../server/gateway';
 import { createNewsServiceRoutes } from '../../../src/generated/server/worldmonitor/news/v1/service_server';
diff --git a/server/_shared/llm.ts b/server/_shared/llm.ts
index a1b628300..5fdcd3e4a 100644
--- a/server/_shared/llm.ts
+++ b/server/_shared/llm.ts
@@ -293,7 +293,8 @@ export function callLlmReasoningStream(opts: LlmStreamOptions): ReadableStream<U
 
           if (!resp.ok || !resp.body) {
             clearTimeout(timeoutId);
-            console.warn(`[llm-stream:${providerName}] HTTP ${resp.status}`);
+            const errBody = resp.body ? await resp.text().catch(() => '') : '';
+            console.warn(`[llm-stream:${providerName}] HTTP ${resp.status} model=${creds.model} body=${errBody.slice(0, 300)}`);
             continue;
           }