diff --git a/litellm/constants.py b/litellm/constants.py
index f5f2c7a49e4..6237e67f6af 100644
--- a/litellm/constants.py
+++ b/litellm/constants.py
@@ -83,6 +83,11 @@ MAX_MCP_SEMANTIC_FILTER_TOOLS_HEADER_LENGTH = int(
     os.getenv("MAX_MCP_SEMANTIC_FILTER_TOOLS_HEADER_LENGTH", 150)
 )
 
+# MCP OAuth2 Client Credentials Defaults
+MCP_OAUTH2_TOKEN_EXPIRY_BUFFER_SECONDS = 60
+MCP_OAUTH2_TOKEN_CACHE_MAX_SIZE = 200
+MCP_OAUTH2_TOKEN_CACHE_DEFAULT_TTL = 3600
+
 LITELLM_UI_ALLOW_HEADERS = [
     "x-litellm-semantic-filter",
     "x-litellm-semantic-filter-tools",