added -model

README.md

@@ -10,7 +10,7 @@ Hygate is a standalone, single-binary gateway that exposes Tencent's Hunyuan 3 (
 - Reasoning content passthrough (`reasoning_content`)
 - Tool/function calling, including incremental streaming of tool-call arguments
 - Fibonacci backoff retry on upstream calls
-- Configurable endpoint and User-Agent
+- Configurable endpoint, model name, and User-Agent
 - No external dependencies (standard library only)
 
 ## Installation
@@ -38,13 +38,14 @@ Alternatively, you can directly build from source by running `make`. This produc
 Run the gateway:
 
 ```
-hygate [-port 8080] [-endpoint https://tencent-hy3.hf.space]
+hygate [-port 8080] [-endpoint https://tencent-hy3.hf.space] [-model hy3]
 ```
 
 Available flags:
 
 - `-port` — TCP port to listen on (default `8080`)
 - `-endpoint` — root URL of the Hunyuan Gradio space (default `https://tencent-hy3.hf.space`)
+- `-model` — exposed model name (default `hy3`)
 - `-user-agent` / `-ua` — custom User-Agent sent to the upstream
 
 Endpoints served:
@@ -72,7 +73,7 @@ Even through the Gradio API, Tencent Hy3 is a very fast and performant model whe
 
 ### Which models are reported?
 
-A single model, `hy3`, is advertised via `/v1/models`.
+By default, a single model, `hy3` (configurable via the `-model` flag), is advertised via `/v1/models`.
 
 ### Are token usage counts returned?
 

hygate_test.go

@@ -10,7 +10,7 @@ import (
 )
 
 func TestHunyuanServiceEndpoint(t *testing.T) {
-  svc := NewHunyuanService("https://example.com/gradio/")
+  svc := NewHunyuanService("https://example.com/gradio/", "")
   if svc.endpoint != "https://example.com/gradio" {
     t.Errorf("expected trailing slash stripped, got %q", svc.endpoint)
   }
@@ -21,6 +21,18 @@ func TestHunyuanServiceEndpoint(t *testing.T) {
   }
 }
 
+func TestCustomModelNameConfiguration(t *testing.T) {
+  svc := NewHunyuanService("https://example.com/gradio", "hunyuan-custom-v1")
+  if svc.modelName != "hunyuan-custom-v1" {
+    t.Errorf("expected modelName 'hunyuan-custom-v1', got %q", svc.modelName)
+  }
+
+  models := svc.ListModels()
+  if len(models) != 1 || models[0].ID != "hunyuan-custom-v1" {
+    t.Fatalf("expected model ID 'hunyuan-custom-v1', got %v", models)
+  }
+}
+
 func TestParseGradioStreamData(t *testing.T) {
   sampleJSON := `[["Hello world", "Thinking process...", null]]`
   c, r, tc, ok := parseGradioStreamData(sampleJSON)
@@ -60,7 +72,7 @@ func TestHunyuanMockedCompletion(t *testing.T) {
   server := httptest.NewServer(handler)
   defer server.Close()
 
-  svc := NewHunyuanService(server.URL)
+  svc := NewHunyuanService(server.URL, "hy3")
 
   rec := httptest.NewRecorder()
   req, _ := http.NewRequest("POST", "/v1/chat/completions", nil)
@@ -146,7 +158,7 @@ func TestHunyuanToolCallingNonStreaming(t *testing.T) {
   server := httptest.NewServer(handler)
   defer server.Close()
 
-  svc := NewHunyuanService(server.URL)
+  svc := NewHunyuanService(server.URL, "hy3")
   rec := httptest.NewRecorder()
   req, _ := http.NewRequest("POST", "/v1/chat/completions", nil)
 
@@ -230,7 +242,7 @@ func TestHunyuanReasoningAndToolCallingStreaming(t *testing.T) {
   server := httptest.NewServer(handler)
   defer server.Close()
 
-  svc := NewHunyuanService(server.URL)
+  svc := NewHunyuanService(server.URL, "hy3")
   rec := httptest.NewRecorder()
   req, _ := http.NewRequest("POST", "/v1/chat/completions", nil)
 

main.go

@@ -375,29 +375,34 @@ func parseGradioStreamData(dataJSON string) (string, string, []ToolCall, bool) {
 }
 
 type HunyuanService struct {
-  endpoint string
-  client   *http.Client
+  endpoint  string
+  modelName string
+  client    *http.Client
 }
 
-func NewHunyuanService(endpoint string) *HunyuanService {
+func NewHunyuanService(endpoint string, modelName string) *HunyuanService {
   cleanEndpoint := strings.TrimRight(endpoint, "/")
+  if modelName == "" {
+    modelName = "hy3"
+  }
   return &HunyuanService{
-    endpoint: cleanEndpoint,
-    client:   &http.Client{Timeout: 300 * time.Second},
+    endpoint:  cleanEndpoint,
+    modelName: modelName,
+    client:    &http.Client{Timeout: 300 * time.Second},
   }
 }
 
 func (s *HunyuanService) ListModels() []ModelItem {
   now := time.Now().Unix()
   return []ModelItem{
-    {ID: "hy3", Object: "model", Created: now, OwnedBy: "hunyuan"},
+    {ID: s.modelName, Object: "model", Created: now, OwnedBy: "hunyuan"},
   }
 }
 
 func (s *HunyuanService) Chat(w http.ResponseWriter, r *http.Request, req ChatCompletionRequest) error {
   modelName := req.Model
   if modelName == "" {
-    modelName = "hy3"
+    modelName = s.modelName
   }
   maxTokens := ResolveMaxTokens(req)
 
@@ -722,6 +727,7 @@ func NewMux(service *HunyuanService) *http.ServeMux {
 func main() {
   portFlag := flag.String("port", "8080", "Port to listen on")
   endpointFlag := flag.String("endpoint", "https://tencent-hy3.hf.space", "Root URL of the Hunyuan Gradio space")
+  modelFlag := flag.String("model", "hy3", "Exposed model name")
   uaFlag := flag.String("user-agent", DefaultUserAgent, "Custom User-Agent header")
   uaShortFlag := flag.String("ua", "", "Alias for -user-agent")
   flag.Parse()
@@ -731,11 +737,12 @@ func main() {
     ConfiguredUserAgent = *uaShortFlag
   }
 
-  service := NewHunyuanService(*endpointFlag)
+  service := NewHunyuanService(*endpointFlag, *modelFlag)
   mux := NewMux(service)
 
   fmt.Printf("hygate starting on port %s...\n", *portFlag)
   fmt.Printf("Target Endpoint: %s\n", service.endpoint)
+  fmt.Printf("Model Name: %s\n", service.modelName)
   fmt.Printf("User-Agent: %s\n", ConfiguredUserAgent)
   fmt.Printf("Endpoints:\n")
   fmt.Printf("  GET  http://localhost:%s/v1/models\n", *portFlag)