chore: initial public snapshot for github upload

llm-gateway-competitors/litellm-wheel-src/litellm/llms/litellm_proxy/responses/transformation.py

@@ -0,0 +1,52 @@
+"""
+Responses API transformation for LiteLLM Proxy provider.
+
+LiteLLM Proxy supports the OpenAI Responses API natively when the underlying model supports it.
+This config enables pass-through behavior to the proxy's /v1/responses endpoint.
+"""
+
+from typing import Optional
+
+from litellm.llms.openai.responses.transformation import OpenAIResponsesAPIConfig
+from litellm.secret_managers.main import get_secret_str
+from litellm.types.utils import LlmProviders
+
+
+class LiteLLMProxyResponsesAPIConfig(OpenAIResponsesAPIConfig):
+    """
+    Configuration for LiteLLM Proxy Responses API support.
+
+    Extends OpenAI's config since the proxy follows OpenAI's API spec,
+    but uses LITELLM_PROXY_API_BASE for the base URL.
+    """
+
+    @property
+    def custom_llm_provider(self) -> LlmProviders:
+        return LlmProviders.LITELLM_PROXY
+
+    def get_complete_url(
+        self,
+        api_base: Optional[str],
+        litellm_params: dict,
+    ) -> str:
+        """
+        Get the endpoint for LiteLLM Proxy responses API.
+
+        Uses LITELLM_PROXY_API_BASE environment variable if api_base is not provided.
+        """
+        api_base = api_base or get_secret_str("LITELLM_PROXY_API_BASE")
+
+        if api_base is None:
+            raise ValueError(
+                "api_base not set for LiteLLM Proxy responses API. "
+                "Set via api_base parameter or LITELLM_PROXY_API_BASE environment variable"
+            )
+
+        # Remove trailing slashes
+        api_base = api_base.rstrip("/")
+
+        return f"{api_base}/responses"
+
+    def supports_native_websocket(self) -> bool:
+        """LiteLLM Proxy does not support native WebSocket for Responses API"""
+        return False