diff --git a/hermes_cli/auth.py b/hermes_cli/auth.py
index 3fab36a2c..98ac4edb3 100644
--- a/hermes_cli/auth.py
+++ b/hermes_cli/auth.py
@@ -214,6 +214,7 @@ PROVIDER_REGISTRY: Dict[str, ProviderConfig] = {
         auth_type="api_key",
         inference_base_url="https://api.anthropic.com",
         api_key_env_vars=("ANTHROPIC_API_KEY", "ANTHROPIC_TOKEN", "CLAUDE_CODE_OAUTH_TOKEN"),
+        base_url_env_var="ANTHROPIC_BASE_URL",
     ),
     "alibaba": ProviderConfig(
         id="alibaba",