From 6b568cfed4f0387409c2d839b7bbda01fa4f874a Mon Sep 17 00:00:00 2001
From: Ishaan Jaffer <ishaanjaffer0324@gmail.com>
Date: Tue, 20 Jan 2026 16:37:39 -0800
Subject: [PATCH] feat: add OAUTH handling ant

---
 litellm/types/llms/anthropic.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/litellm/types/llms/anthropic.py b/litellm/types/llms/anthropic.py
index 779a6950d92..0e687be660f 100644
--- a/litellm/types/llms/anthropic.py
+++ b/litellm/types/llms/anthropic.py
@@ -642,4 +642,8 @@ ANTHROPIC_TOOL_SEARCH_BETA_HEADER = "advanced-tool-use-2025-11-20"
 # Effort beta header constant
 ANTHROPIC_EFFORT_BETA_HEADER = "effort-2025-11-24"
 
+# OAuth constants
+ANTHROPIC_OAUTH_TOKEN_PREFIX = "sk-ant-oat"
+ANTHROPIC_OAUTH_BETA_HEADER = "oauth-2025-04-20"
+