chore: initial snapshot for gitea/github upload

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

@@ -0,0 +1,81 @@
+"""
+OpenRouter Responses API Configuration.
+
+OpenRouter supports the Responses API at https://openrouter.ai/api/v1/responses
+with OpenAI-compatible request/response format, including reasoning with
+encrypted_content for multi-turn stateless workflows.
+
+Docs: https://openrouter.ai/docs/api/reference/responses/overview
+"""
+
+from typing import Optional
+
+import litellm
+from litellm.llms.openai.responses.transformation import OpenAIResponsesAPIConfig
+from litellm.secret_managers.main import get_secret_str
+from litellm.types.router import GenericLiteLLMParams
+from litellm.types.utils import LlmProviders
+
+
+class OpenRouterResponsesAPIConfig(OpenAIResponsesAPIConfig):
+    """
+    Configuration for OpenRouter's Responses API.
+
+    Inherits from OpenAIResponsesAPIConfig since OpenRouter's Responses API
+    is compatible with OpenAI's Responses API specification.
+
+    Key difference from direct OpenAI:
+    - Uses https://openrouter.ai/api/v1 as the API base
+    - Uses OPENROUTER_API_KEY for authentication
+    """
+
+    @property
+    def custom_llm_provider(self) -> LlmProviders:
+        return LlmProviders.OPENROUTER
+
+    def validate_environment(
+        self,
+        headers: dict,
+        model: str,
+        litellm_params: Optional[GenericLiteLLMParams],
+    ) -> dict:
+        litellm_params = litellm_params or GenericLiteLLMParams()
+        api_key = (
+            litellm_params.api_key
+            or litellm.api_key
+            or get_secret_str("OPENROUTER_API_KEY")
+            or get_secret_str("OR_API_KEY")
+        )
+
+        if not api_key:
+            raise ValueError(
+                "OpenRouter API key is required. Set OPENROUTER_API_KEY "
+                "environment variable or pass api_key parameter."
+            )
+
+        headers.update(
+            {
+                "Authorization": f"Bearer {api_key}",
+            }
+        )
+        return headers
+
+    def get_complete_url(
+        self,
+        api_base: Optional[str],
+        litellm_params: dict,
+    ) -> str:
+        api_base = (
+            api_base
+            or litellm.api_base
+            or get_secret_str("OPENROUTER_API_BASE")
+            or "https://openrouter.ai/api/v1"
+        )
+
+        api_base = api_base.rstrip("/")
+
+        return f"{api_base}/responses"
+
+    def supports_native_websocket(self) -> bool:
+        """OpenRouter does not support native WebSocket for Responses API"""
+        return False