The Responses API serves models and coding tools that support this protocol.
Example request
bash
curl http://localhost:3187/v1/responses \
-H "Authorization: Bearer $YUNHAI_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"YOUR_MODEL_ID","input":"Hello"}'Confirm support
Select an upstream and model that support Responses. Support for Chat Completions does not automatically imply support for Responses or tool calls.
Coding tools
Codex custom providers use the Responses protocol. See the Codex guide.