From 6cbefe4a0ef4a07a6970bad80963732410bfb8fe Mon Sep 17 00:00:00 2001
From: Batuhan Bozkurt <pyramind@gmail.com>
Date: Mon, 30 Mar 2026 19:19:26 +0300
Subject: [PATCH] translating structured generation request parameters from
 responses api format to completions api format

---
 tools/server/server-common.cpp | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tools/server/server-common.cpp b/tools/server/server-common.cpp
index ed5e306fc5..0589e541b6 100644
--- a/tools/server/server-common.cpp
+++ b/tools/server/server-common.cpp
@@ -1430,6 +1430,35 @@ json convert_responses_to_chatcmpl(const json & response_body) {
         chatcmpl_body["max_tokens"] = response_body["max_output_tokens"];
     }
 
+    // Convert Responses API text.format to Chat Completions response_format
+    if (response_body.contains("text") && response_body.at("text").contains("format")) {
+        const json & text_format = response_body.at("text").at("format");
+        std::string format_type = json_value(text_format, "type", std::string());
+
+        if (format_type == "json_schema") {
+            json json_schema_wrapper = {
+                {"name",   json_value(text_format, "name", std::string("default"))},
+                {"schema", json_value(text_format, "schema", json::object())},
+            };
+            if (text_format.contains("strict")) {
+                json_schema_wrapper["strict"] = text_format.at("strict");
+            }
+            if (text_format.contains("description")) {
+                json_schema_wrapper["description"] = text_format.at("description");
+            }
+            chatcmpl_body["response_format"] = {
+                {"type",        "json_schema"},
+                {"json_schema", json_schema_wrapper},
+            };
+        } else if (format_type == "json_object") {
+            chatcmpl_body["response_format"] = {
+                {"type", "json_object"},
+            };
+        }
+
+        chatcmpl_body.erase("text");
+    }
+
     return chatcmpl_body;
 }