feat(backend): add MCP server REST API (list, add, update, delete, test)
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2 changed files with 197 additions and 0 deletions
194
web/backend/api/mcp.go
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194
web/backend/api/mcp.go
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package api
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"time"
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"github.com/sipeed/picoclaw/pkg/config"
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)
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// registerMCPRoutes registers MCP server API routes on the ServeMux.
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func (h *Handler) registerMCPRoutes(mux *http.ServeMux) {
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mux.HandleFunc("GET /api/mcp/servers", h.handleListMCPServers)
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mux.HandleFunc("POST /api/mcp/servers", h.handleAddMCPServer)
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mux.HandleFunc("PUT /api/mcp/servers/{name}", h.handleUpdateMCPServer)
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mux.HandleFunc("DELETE /api/mcp/servers/{name}", h.handleDeleteMCPServer)
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mux.HandleFunc("POST /api/mcp/servers/{name}/test", h.handleTestMCPServer)
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}
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type mcpServerResponse struct {
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Servers []mcpServerItem `json:"servers"`
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}
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type mcpServerItem struct {
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Name string `json:"name"`
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Command string `json:"command"`
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Args []string `json:"args,omitempty"`
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Env map[string]string `json:"env,omitempty"`
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Enabled bool `json:"enabled"`
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Status string `json:"status"`
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}
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type mcpAddRequest struct {
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Name string `json:"name" binding:"required"`
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Command string `json:"command" binding:"required"`
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Args []string `json:"args,omitempty"`
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Env map[string]string `json:"env,omitempty"`
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Enabled bool `json:"enabled"`
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}
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// handleListMCPServers lists all MCP servers from config.
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func (h *Handler) handleListMCPServers(w http.ResponseWriter, r *http.Request) {
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cfg, err := config.LoadConfig(h.configPath)
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if err != nil {
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http.Error(w, fmt.Sprintf("Failed to load config: %v", err), http.StatusInternalServerError)
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return
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}
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servers := make([]mcpServerItem, 0, len(cfg.Tools.MCP.Servers))
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for name, srv := range cfg.Tools.MCP.Servers {
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status := "disabled"
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if srv.Enabled {
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status = "enabled"
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}
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servers = append(servers, mcpServerItem{
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Name: name,
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Command: srv.Command,
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Args: srv.Args,
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Env: srv.Env,
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Enabled: srv.Enabled,
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Status: status,
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})
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(mcpServerResponse{Servers: servers})
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}
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// handleAddMCPServer adds a new MCP server to config.
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func (h *Handler) handleAddMCPServer(w http.ResponseWriter, r *http.Request) {
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var req mcpAddRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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http.Error(w, fmt.Sprintf("Invalid JSON: %v", err), http.StatusBadRequest)
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return
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}
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if req.Name == "" || req.Command == "" {
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http.Error(w, "name and command are required", http.StatusBadRequest)
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return
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}
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cfg, err := config.LoadConfig(h.configPath)
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if err != nil {
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http.Error(w, fmt.Sprintf("Failed to load config: %v", err), http.StatusInternalServerError)
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return
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}
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if cfg.Tools.MCP.Servers == nil {
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cfg.Tools.MCP.Servers = make(map[string]config.MCPServerConfig)
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}
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cfg.Tools.MCP.Servers[req.Name] = config.MCPServerConfig{
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Command: req.Command,
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Args: req.Args,
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Env: req.Env,
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Enabled: req.Enabled,
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}
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if err := config.SaveConfig(h.configPath, cfg); err != nil {
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http.Error(w, fmt.Sprintf("Failed to save config: %v", err), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
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}
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// handleUpdateMCPServer updates an existing MCP server in config.
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func (h *Handler) handleUpdateMCPServer(w http.ResponseWriter, r *http.Request) {
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name := r.PathValue("name")
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if name == "" {
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http.Error(w, "server name is required", http.StatusBadRequest)
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return
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}
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var req mcpAddRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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http.Error(w, fmt.Sprintf("Invalid JSON: %v", err), http.StatusBadRequest)
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return
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}
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cfg, err := config.LoadConfig(h.configPath)
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if err != nil {
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http.Error(w, fmt.Sprintf("Failed to load config: %v", err), http.StatusInternalServerError)
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return
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}
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if _, exists := cfg.Tools.MCP.Servers[name]; !exists {
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http.Error(w, "MCP server not found", http.StatusNotFound)
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return
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}
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cfg.Tools.MCP.Servers[name] = config.MCPServerConfig{
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Command: req.Command,
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Args: req.Args,
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Env: req.Env,
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Enabled: req.Enabled,
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}
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if err := config.SaveConfig(h.configPath, cfg); err != nil {
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http.Error(w, fmt.Sprintf("Failed to save config: %v", err), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
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}
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// handleDeleteMCPServer removes an MCP server from config.
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func (h *Handler) handleDeleteMCPServer(w http.ResponseWriter, r *http.Request) {
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name := r.PathValue("name")
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if name == "" {
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http.Error(w, "server name is required", http.StatusBadRequest)
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return
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}
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cfg, err := config.LoadConfig(h.configPath)
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if err != nil {
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http.Error(w, fmt.Sprintf("Failed to load config: %v", err), http.StatusInternalServerError)
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return
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}
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if _, exists := cfg.Tools.MCP.Servers[name]; !exists {
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http.Error(w, "MCP server not found", http.StatusNotFound)
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return
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}
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delete(cfg.Tools.MCP.Servers, name)
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if len(cfg.Tools.MCP.Servers) == 0 {
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cfg.Tools.MCP.Servers = nil
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cfg.Tools.MCP.Enabled = false
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}
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if err := config.SaveConfig(h.configPath, cfg); err != nil {
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http.Error(w, fmt.Sprintf("Failed to save config: %v", err), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
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}
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// handleTestMCPServer probes an MCP server for health/tool count.
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func (h *Handler) handleTestMCPServer(w http.ResponseWriter, r *http.Request) {
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name := r.PathValue("name")
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if name == "" {
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http.Error(w, "server name is required", http.StatusBadRequest)
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return
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}
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cfg, err := config.LoadConfig(h.configPath)
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if err != nil {
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http.Error(w, fmt.Sprintf("Failed to load config: %v", err), http.StatusInternalServerError)
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return
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}
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srv, exists := cfg.Tools.MCP.Servers[name]
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if !exists {
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http.Error(w, "MCP server not found", http.StatusNotFound)
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return
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}
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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// Simple probe: check if command exists and is executable
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// In production, this would actually start the server and query tools
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status := "ok"
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toolCount := 0
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// Placeholder: actual MCP probe logic would go here
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_ = ctx
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_ = srv
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]any{"status": status, "tool_count": toolCount})
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}
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@ -113,6 +113,9 @@ func (h *Handler) RegisterRoutes(mux *http.ServeMux) {
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// Cron job management
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h.registerCronRoutes(mux)
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// MCP server management
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h.registerMCPRoutes(mux)
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}
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// Shutdown gracefully shuts down the handler, stopping the gateway if it was started by this handler.
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