From 56086e3fd7a1f4079103bc0146cb79a6ae5b91bc Mon Sep 17 00:00:00 2001
From: Maymun <139681654+maymuneth@users.noreply.github.com>
Date: Sat, 4 Apr 2026 22:21:36 +0300
Subject: [PATCH] fix(auth): write Anthropic OAuth token files atomically to
 prevent corruption

---
 agent/anthropic_adapter.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/agent/anthropic_adapter.py b/agent/anthropic_adapter.py
index ea09c11ea4..05449e2a77 100644
--- a/agent/anthropic_adapter.py
+++ b/agent/anthropic_adapter.py
@@ -641,7 +641,9 @@ def _write_claude_code_credentials(
         existing["claudeAiOauth"] = oauth_data
 
         cred_path.parent.mkdir(parents=True, exist_ok=True)
-        cred_path.write_text(json.dumps(existing, indent=2), encoding="utf-8")
+        _tmp_cred = cred_path.with_suffix(".tmp")
+        _tmp_cred.write_text(json.dumps(existing, indent=2), encoding="utf-8")
+        _tmp_cred.replace(cred_path)
         # Restrict permissions (credentials file)
         cred_path.chmod(0o600)
     except (OSError, IOError) as e:
@@ -1598,4 +1600,3 @@ def build_anthropic_kwargs(
     return kwargs
 
 
-