From 20794a39bde0a0ac53e3309ba651b2994a8a4440 Mon Sep 17 00:00:00 2001
From: sergeyhatunzev <>
Date: Fri, 22 May 2026 09:06:08 +0500
Subject: [PATCH] fix: use ANTHROPIC_BASE_URL env var for custom API endpoints

The callAnthropic function was hardcoding the Anthropic API URL.
Now reads ANTHROPIC_BASE_URL from env (falls back to default).
---
 v2/src/core/agent-loop.mjs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/v2/src/core/agent-loop.mjs b/v2/src/core/agent-loop.mjs
index 36e7a3f..49e9a56 100644
--- a/v2/src/core/agent-loop.mjs
+++ b/v2/src/core/agent-loop.mjs
@@ -240,7 +240,8 @@ async function callAnthropic(model, state, toolDefs, settings, stream) {
         body.thinking = { type: 'enabled', budget_tokens: settings.thinkingBudget || 10000 };
     }
 
-    const res = await fetch('https://api.anthropic.com/v1/messages', {
+    const baseUrl = process.env.ANTHROPIC_BASE_URL || 'https://api.anthropic.com';
+    const res = await fetch(`${baseUrl}/v1/messages`, {
         method: 'POST',
         headers: {
             'Content-Type': 'application/json',