feat: add MiniMax provider support (#1406)

Add MiniMax as a new AI model provider with OpenAI-compatible API.

Supported models:
- MiniMax-M2.5 (default) - Peak Performance, Ultimate Value
- MiniMax-M2.5-highspeed - Same performance, faster and more agile

Changes:
- Add MiniMax client (mcp/minimax_client.go) with OpenAI-compatible API
- Add comprehensive unit tests (mcp/minimax_client_test.go)
- Add WithMiniMaxConfig option (mcp/options.go)
- Register MiniMax provider in trader, debate engine, backtest, and API
- Add MiniMax to frontend provider config and model icons
- Add MiniMax SVG icon

API Base URL: https://api.minimax.io/v1

api/backtest.go

@@ -832,6 +832,8 @@ func (s *Server) hydrateBacktestAIConfig(cfg *backtest.BacktestConfig) error {
 			provider = "google"
 		} else if strings.Contains(modelNameLower, "deepseek") {
 			provider = "deepseek"
+		} else if strings.Contains(modelNameLower, "minimax") {
+			provider = "minimax"
 		} else if model.CustomAPIURL != "" {
 			provider = "custom"
 		} else {

api/server.go

@@ -1683,6 +1683,7 @@ func (s *Server) handleGetModelConfigs(c *gin.Context) {
 			{ID: "gemini", Name: "Gemini AI", Provider: "gemini", Enabled: false},
 			{ID: "grok", Name: "Grok AI", Provider: "grok", Enabled: false},
 			{ID: "kimi", Name: "Kimi AI", Provider: "kimi", Enabled: false},
+			{ID: "minimax", Name: "MiniMax AI", Provider: "minimax", Enabled: false},
 		}
 		c.JSON(http.StatusOK, defaultModels)
 		return
@@ -3252,6 +3253,7 @@ func (s *Server) handleGetSupportedModels(c *gin.Context) {
 		{"id": "gemini", "name": "Google Gemini", "provider": "gemini", "defaultModel": "gemini-3-pro-preview"},
 		{"id": "grok", "name": "Grok (xAI)", "provider": "grok", "defaultModel": "grok-3-latest"},
 		{"id": "kimi", "name": "Kimi (Moonshot)", "provider": "kimi", "defaultModel": "moonshot-v1-auto"},
+		{"id": "minimax", "name": "MiniMax", "provider": "minimax", "defaultModel": "MiniMax-M2.5"},
 	}
 
 	c.JSON(http.StatusOK, supportedModels)

api/strategy.go

@@ -625,6 +625,9 @@ func (s *Server) runRealAITest(userID, modelID, systemPrompt, userPrompt string)
 	case "openai":
 		aiClient = mcp.NewOpenAIClient()
 		aiClient.SetAPIKey(apiKey, model.CustomAPIURL, model.CustomModelName)
+	case "minimax":
+		aiClient = mcp.NewMiniMaxClient()
+		aiClient.SetAPIKey(apiKey, model.CustomAPIURL, model.CustomModelName)
 	default:
 		// Use generic client
 		aiClient = mcp.NewClient()

backtest/ai_client.go

@@ -71,6 +71,13 @@ func configureMCPClient(cfg BacktestConfig, base mcp.AIClient) (mcp.AIClient, er
 		oaiC := mcp.NewOpenAIClientWithOptions()
 		oaiC.(*mcp.OpenAIClient).SetAPIKey(cfg.AICfg.APIKey, cfg.AICfg.BaseURL, cfg.AICfg.Model)
 		return oaiC, nil
+	case "minimax":
+		if cfg.AICfg.APIKey == "" {
+			return nil, fmt.Errorf("minimax provider requires api key")
+		}
+		mmC := mcp.NewMiniMaxClientWithOptions()
+		mmC.(*mcp.MiniMaxClient).SetAPIKey(cfg.AICfg.APIKey, cfg.AICfg.BaseURL, cfg.AICfg.Model)
+		return mmC, nil
 	case "custom":
 		if cfg.AICfg.BaseURL == "" || cfg.AICfg.APIKey == "" || cfg.AICfg.Model == "" {
 			return nil, fmt.Errorf("custom provider requires base_url, api key and model")
@@ -125,6 +132,11 @@ func cloneBaseClient(base mcp.AIClient) *mcp.Client {
 			cp := *c.Client
 			return &cp
 		}
+	case *mcp.MiniMaxClient:
+		if c != nil && c.Client != nil {
+			cp := *c.Client
+			return &cp
+		}
 	}
 	// Fall back to a new default client
 	return mcp.NewClient().(*mcp.Client)

debate/engine.go

@@ -97,6 +97,8 @@ func (e *DebateEngine) InitializeClients(participants []*store.DebateParticipant
 			client = mcp.NewGrokClient()
 		case "kimi":
 			client = mcp.NewKimiClient()
+		case "minimax":
+			client = mcp.NewMiniMaxClient()
 		default:
 			client = mcp.New()
 		}

mcp/minimax_client.go

@@ -0,0 +1,83 @@
+package mcp
+
+import (
+	"net/http"
+)
+
+const (
+	ProviderMiniMax       = "minimax"
+	DefaultMiniMaxBaseURL = "https://api.minimax.io/v1"
+	DefaultMiniMaxModel   = "MiniMax-M2.5"
+)
+
+type MiniMaxClient struct {
+	*Client
+}
+
+// NewMiniMaxClient creates MiniMax client (backward compatible)
+func NewMiniMaxClient() AIClient {
+	return NewMiniMaxClientWithOptions()
+}
+
+// NewMiniMaxClientWithOptions creates MiniMax client (supports options pattern)
+//
+// Usage examples:
+//
+//	// Basic usage
+//	client := mcp.NewMiniMaxClientWithOptions()
+//
+//	// Custom configuration
+//	client := mcp.NewMiniMaxClientWithOptions(
+//	    mcp.WithAPIKey("sk-xxx"),
+//	    mcp.WithLogger(customLogger),
+//	    mcp.WithTimeout(60*time.Second),
+//	)
+func NewMiniMaxClientWithOptions(opts ...ClientOption) AIClient {
+	// 1. Create MiniMax preset options
+	minimaxOpts := []ClientOption{
+		WithProvider(ProviderMiniMax),
+		WithModel(DefaultMiniMaxModel),
+		WithBaseURL(DefaultMiniMaxBaseURL),
+	}
+
+	// 2. Merge user options (user options have higher priority)
+	allOpts := append(minimaxOpts, opts...)
+
+	// 3. Create base client
+	baseClient := NewClient(allOpts...).(*Client)
+
+	// 4. Create MiniMax client
+	minimaxClient := &MiniMaxClient{
+		Client: baseClient,
+	}
+
+	// 5. Set hooks to point to MiniMaxClient (implement dynamic dispatch)
+	baseClient.hooks = minimaxClient
+
+	return minimaxClient
+}
+
+func (c *MiniMaxClient) SetAPIKey(apiKey string, customURL string, customModel string) {
+	c.APIKey = apiKey
+
+	if len(apiKey) > 8 {
+		c.logger.Infof("🔧 [MCP] MiniMax API Key: %s...%s", apiKey[:4], apiKey[len(apiKey)-4:])
+	}
+	if customURL != "" {
+		c.BaseURL = customURL
+		c.logger.Infof("🔧 [MCP] MiniMax using custom BaseURL: %s", customURL)
+	} else {
+		c.logger.Infof("🔧 [MCP] MiniMax using default BaseURL: %s", c.BaseURL)
+	}
+	if customModel != "" {
+		c.Model = customModel
+		c.logger.Infof("🔧 [MCP] MiniMax using custom Model: %s", customModel)
+	} else {
+		c.logger.Infof("🔧 [MCP] MiniMax using default Model: %s", c.Model)
+	}
+}
+
+// MiniMax uses standard OpenAI-compatible API with Bearer auth
+func (c *MiniMaxClient) setAuthHeader(reqHeaders http.Header) {
+	c.Client.setAuthHeader(reqHeaders)
+}

mcp/minimax_client_test.go

@@ -0,0 +1,272 @@
+package mcp
+
+import (
+	"testing"
+	"time"
+)
+
+// ============================================================
+// Test MiniMaxClient Creation and Configuration
+// ============================================================
+
+func TestNewMiniMaxClient_Default(t *testing.T) {
+	client := NewMiniMaxClient()
+
+	if client == nil {
+		t.Fatal("client should not be nil")
+	}
+
+	// Type assertion check
+	mmClient, ok := client.(*MiniMaxClient)
+	if !ok {
+		t.Fatal("client should be *MiniMaxClient")
+	}
+
+	// Verify default values
+	if mmClient.Provider != ProviderMiniMax {
+		t.Errorf("Provider should be '%s', got '%s'", ProviderMiniMax, mmClient.Provider)
+	}
+
+	if mmClient.BaseURL != DefaultMiniMaxBaseURL {
+		t.Errorf("BaseURL should be '%s', got '%s'", DefaultMiniMaxBaseURL, mmClient.BaseURL)
+	}
+
+	if mmClient.Model != DefaultMiniMaxModel {
+		t.Errorf("Model should be '%s', got '%s'", DefaultMiniMaxModel, mmClient.Model)
+	}
+
+	if mmClient.logger == nil {
+		t.Error("logger should not be nil")
+	}
+
+	if mmClient.httpClient == nil {
+		t.Error("httpClient should not be nil")
+	}
+}
+
+func TestNewMiniMaxClientWithOptions(t *testing.T) {
+	mockLogger := NewMockLogger()
+	customModel := "MiniMax-M2.5-highspeed"
+	customAPIKey := "sk-custom-key"
+
+	client := NewMiniMaxClientWithOptions(
+		WithLogger(mockLogger),
+		WithModel(customModel),
+		WithAPIKey(customAPIKey),
+		WithMaxTokens(4000),
+	)
+
+	mmClient := client.(*MiniMaxClient)
+
+	// Verify custom options are applied
+	if mmClient.logger != mockLogger {
+		t.Error("logger should be set from option")
+	}
+
+	if mmClient.Model != customModel {
+		t.Error("Model should be set from option")
+	}
+
+	if mmClient.APIKey != customAPIKey {
+		t.Error("APIKey should be set from option")
+	}
+
+	if mmClient.MaxTokens != 4000 {
+		t.Error("MaxTokens should be 4000")
+	}
+
+	// Verify MiniMax default values are retained
+	if mmClient.Provider != ProviderMiniMax {
+		t.Errorf("Provider should still be '%s'", ProviderMiniMax)
+	}
+
+	if mmClient.BaseURL != DefaultMiniMaxBaseURL {
+		t.Errorf("BaseURL should still be '%s'", DefaultMiniMaxBaseURL)
+	}
+}
+
+// ============================================================
+// Test SetAPIKey
+// ============================================================
+
+func TestMiniMaxClient_SetAPIKey(t *testing.T) {
+	mockLogger := NewMockLogger()
+	client := NewMiniMaxClientWithOptions(
+		WithLogger(mockLogger),
+	)
+
+	mmClient := client.(*MiniMaxClient)
+
+	// Test setting API Key (default URL and Model)
+	mmClient.SetAPIKey("sk-test-key-12345678", "", "")
+
+	if mmClient.APIKey != "sk-test-key-12345678" {
+		t.Errorf("APIKey should be 'sk-test-key-12345678', got '%s'", mmClient.APIKey)
+	}
+
+	// Verify logging
+	logs := mockLogger.GetLogsByLevel("INFO")
+	if len(logs) == 0 {
+		t.Error("should have logged API key setting")
+	}
+
+	// Verify BaseURL and Model remain default
+	if mmClient.BaseURL != DefaultMiniMaxBaseURL {
+		t.Error("BaseURL should remain default")
+	}
+
+	if mmClient.Model != DefaultMiniMaxModel {
+		t.Error("Model should remain default")
+	}
+}
+
+func TestMiniMaxClient_SetAPIKey_WithCustomURL(t *testing.T) {
+	mockLogger := NewMockLogger()
+	client := NewMiniMaxClientWithOptions(
+		WithLogger(mockLogger),
+	)
+
+	mmClient := client.(*MiniMaxClient)
+
+	customURL := "https://api.minimaxi.com/v1"
+	mmClient.SetAPIKey("sk-test-key-12345678", customURL, "")
+
+	if mmClient.BaseURL != customURL {
+		t.Errorf("BaseURL should be '%s', got '%s'", customURL, mmClient.BaseURL)
+	}
+
+	// Verify logging
+	logs := mockLogger.GetLogsByLevel("INFO")
+	hasCustomURLLog := false
+	for _, log := range logs {
+		if log.Format == "🔧 [MCP] MiniMax using custom BaseURL: %s" {
+			hasCustomURLLog = true
+			break
+		}
+	}
+
+	if !hasCustomURLLog {
+		t.Error("should have logged custom BaseURL")
+	}
+}
+
+func TestMiniMaxClient_SetAPIKey_WithCustomModel(t *testing.T) {
+	mockLogger := NewMockLogger()
+	client := NewMiniMaxClientWithOptions(
+		WithLogger(mockLogger),
+	)
+
+	mmClient := client.(*MiniMaxClient)
+
+	customModel := "MiniMax-M2.5-highspeed"
+	mmClient.SetAPIKey("sk-test-key-12345678", "", customModel)
+
+	if mmClient.Model != customModel {
+		t.Errorf("Model should be '%s', got '%s'", customModel, mmClient.Model)
+	}
+
+	// Verify logging
+	logs := mockLogger.GetLogsByLevel("INFO")
+	hasCustomModelLog := false
+	for _, log := range logs {
+		if log.Format == "🔧 [MCP] MiniMax using custom Model: %s" {
+			hasCustomModelLog = true
+			break
+		}
+	}
+
+	if !hasCustomModelLog {
+		t.Error("should have logged custom Model")
+	}
+}
+
+// ============================================================
+// Test Integration Features
+// ============================================================
+
+func TestMiniMaxClient_CallWithMessages_Success(t *testing.T) {
+	mockHTTP := NewMockHTTPClient()
+	mockHTTP.SetSuccessResponse("MiniMax AI response")
+	mockLogger := NewMockLogger()
+
+	client := NewMiniMaxClientWithOptions(
+		WithHTTPClient(mockHTTP.ToHTTPClient()),
+		WithLogger(mockLogger),
+		WithAPIKey("sk-test-key"),
+	)
+
+	result, err := client.CallWithMessages("system prompt", "user prompt")
+
+	if err != nil {
+		t.Fatalf("should not error: %v", err)
+	}
+
+	if result != "MiniMax AI response" {
+		t.Errorf("expected 'MiniMax AI response', got '%s'", result)
+	}
+
+	// Verify request
+	requests := mockHTTP.GetRequests()
+	if len(requests) != 1 {
+		t.Fatalf("expected 1 request, got %d", len(requests))
+	}
+
+	req := requests[0]
+
+	// Verify URL
+	expectedURL := DefaultMiniMaxBaseURL + "/chat/completions"
+	if req.URL.String() != expectedURL {
+		t.Errorf("expected URL '%s', got '%s'", expectedURL, req.URL.String())
+	}
+
+	// Verify Authorization header
+	authHeader := req.Header.Get("Authorization")
+	if authHeader != "Bearer sk-test-key" {
+		t.Errorf("expected 'Bearer sk-test-key', got '%s'", authHeader)
+	}
+
+	// Verify Content-Type
+	if req.Header.Get("Content-Type") != "application/json" {
+		t.Error("Content-Type should be application/json")
+	}
+}
+
+func TestMiniMaxClient_Timeout(t *testing.T) {
+	client := NewMiniMaxClientWithOptions(
+		WithTimeout(30 * time.Second),
+	)
+
+	mmClient := client.(*MiniMaxClient)
+
+	if mmClient.httpClient.Timeout != 30*time.Second {
+		t.Errorf("expected timeout 30s, got %v", mmClient.httpClient.Timeout)
+	}
+
+	// Test SetTimeout
+	client.SetTimeout(60 * time.Second)
+
+	if mmClient.httpClient.Timeout != 60*time.Second {
+		t.Errorf("expected timeout 60s after SetTimeout, got %v", mmClient.httpClient.Timeout)
+	}
+}
+
+// ============================================================
+// Test hooks Mechanism
+// ============================================================
+
+func TestMiniMaxClient_HooksIntegration(t *testing.T) {
+	client := NewMiniMaxClientWithOptions()
+	mmClient := client.(*MiniMaxClient)
+
+	// Verify hooks point to mmClient itself (implements polymorphism)
+	if mmClient.hooks != mmClient {
+		t.Error("hooks should point to mmClient for polymorphism")
+	}
+
+	// Verify buildUrl uses MiniMax configuration
+	url := mmClient.buildUrl()
+	expectedURL := DefaultMiniMaxBaseURL + "/chat/completions"
+	if url != expectedURL {
+		t.Errorf("expected URL '%s', got '%s'", expectedURL, url)
+	}
+}

mcp/options.go

@@ -160,3 +160,17 @@ func WithQwenConfig(apiKey string) ClientOption {
 		c.Model = DefaultQwenModel
 	}
 }
+
+// WithMiniMaxConfig sets MiniMax configuration
+//
+// Usage example:
+//
+//	client := mcp.NewClient(mcp.WithMiniMaxConfig("sk-xxx"))
+func WithMiniMaxConfig(apiKey string) ClientOption {
+	return func(c *Config) {
+		c.Provider = ProviderMiniMax
+		c.APIKey = apiKey
+		c.BaseURL = DefaultMiniMaxBaseURL
+		c.Model = DefaultMiniMaxModel
+	}
+}

trader/auto_trader.go

@@ -201,6 +201,11 @@ func NewAutoTrader(config AutoTraderConfig, st *store.Store, userID string) (*Au
 		mcpClient.SetAPIKey(config.CustomAPIKey, config.CustomAPIURL, config.CustomModelName)
 		logger.Infof("🤖 [%s] Using OpenAI", config.Name)
 
+	case "minimax":
+		mcpClient = mcp.NewMiniMaxClient()
+		mcpClient.SetAPIKey(config.CustomAPIKey, config.CustomAPIURL, config.CustomModelName)
+		logger.Infof("🤖 [%s] Using MiniMax AI", config.Name)
+
 	case "qwen":
 		mcpClient = mcp.NewQwenClient()
 		apiKey := config.QwenKey

web/public/icons/minimax.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none">
+  <rect width="24" height="24" rx="4" fill="#E45735"/>
+  <text x="12" y="16" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="10" fill="white">M</text>
+</svg>

web/src/components/AITradersPage.tsx

@@ -96,6 +96,11 @@ const AI_PROVIDER_CONFIG: Record<string, {
     apiUrl: 'https://platform.moonshot.ai/console/api-keys',
     apiName: 'Moonshot',
   },
+  minimax: {
+    defaultModel: 'MiniMax-M2.5',
+    apiUrl: 'https://platform.minimax.io',
+    apiName: 'MiniMax',
+  },
 }
 
 interface AITradersPageProps {

web/src/components/ModelIcons.tsx

@@ -13,6 +13,7 @@ const MODEL_COLORS: Record<string, string> = {
   gemini: '#4285F4',
   grok: '#000000',
   openai: '#10A37F',
+  minimax: '#E45735',
 }
 
 // 获取AI模型图标的函数
@@ -44,6 +45,9 @@ export const getModelIcon = (modelType: string, props: IconProps = {}) => {
     case 'openai':
       iconPath = '/icons/openai.svg'
       break
+    case 'minimax':
+      iconPath = '/icons/minimax.svg'
+      break
     default:
       return null
   }

web/src/pages/DebateArenaPage.tsx

@@ -104,6 +104,7 @@ function AIAvatar({ name, size = 24 }: { name: string; size?: number }) {
     kimi: { bg: 'bg-purple-500', text: 'text-white', letter: 'K' },
     qwen: { bg: 'bg-indigo-500', text: 'text-white', letter: 'Q' },
     openai: { bg: 'bg-emerald-600', text: 'text-white', letter: 'O' },
+    minimax: { bg: 'bg-red-500', text: 'text-white', letter: 'M' },
     gpt: { bg: 'bg-emerald-600', text: 'text-white', letter: 'O' },
   }
   const lower = name.toLowerCase()