allow insiders to work for non-ui features

Author: mattdholloway

internal/ghmcp/server.go

@@ -251,8 +251,10 @@ func NewMCPServer(cfg MCPServerConfig) (*mcp.Server, error) {
 	// enable toolsets or tools explicitly that do need registration).
 	inventory.RegisterAll(context.Background(), ghServer, deps)
 
-	// Register MCP App UI resources (static resources for tool UI) - insiders only
-	if cfg.InsidersMode {
+	// Register MCP App UI resources if available (requires running script/build-ui).
+	// We check availability to allow Insiders mode to work for non-UI features
+	// even when UI assets haven't been built.
+	if cfg.InsidersMode && github.UIAssetsAvailable() {
 		github.RegisterUIResources(ghServer)
 	}
 

pkg/github/ui_embed.go

@@ -30,3 +30,12 @@ func MustGetUIAsset(name string) string {
 	}
 	return html
 }
+
+// UIAssetsAvailable returns true if the MCP App UI assets have been built.
+// This checks for a known UI asset file to determine if `script/build-ui` has been run.
+// Use this to gracefully skip UI registration when assets aren't available,
+// allowing Insiders mode to work for non-UI features without requiring a UI build.
+func UIAssetsAvailable() bool {
+	_, err := GetUIAsset("get-me.html")
+	return err == nil
+}