diff --git a/README.md b/README.md
index 0f18b8a..7fe0a57 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Startup project and solution configuration in the status bar, with build, debug,
 hot reload that actually use them. Built for [DotRush](https://github.com/JaneySprings/DotRush).
 
 ```
-$(project) MyGame.Editor   $(settings-gear) Test | x64   $(debug-alt)   $(flame)
+$(project) MyGame.Editor   $(settings-gear) Test | x64   $(debug-alt)   $(flame)   $(database) 4/4
 ```
 
 - The **project item** shows which `.csproj` is the startup project, and picks another one
@@ -13,6 +13,8 @@ $(project) MyGame.Editor   $(settings-gear) Test | x64   $(debug-alt)   $(flame)
   `Test | x64`, `Release | Any CPU` — exactly as `MyGame.sln` lists them.
 - The **debug button** builds with that configuration and launches the startup project.
 - The **flame** starts it under `dotnet watch` with hot reload instead.
+- The **database counter** says how many projects of the solution DotRush's language server has actually loaded.
+- The **database counter** says how many projects of the solution DotRush's language server has actually loaded.
 
 ## Why, when DotRush already has a status bar item
 
@@ -141,6 +143,26 @@ hot reload under those asks whether to switch to Debug first.
 before the watcher starts, so the Editor's post-build step finds the Builder even on a
 clean checkout; the watcher's own build is then incremental.
 
+## Language server status
+
+DotRush shows a spinner while it loads the workspace and nothing afterwards, so when Find
+References comes back empty there is no way to tell "no references" from "not indexed".
+DotRush does raise one `projectLoaded` event per project through its exports; the
+`$(database) 3/4` item counts those against the solution in the status bar and turns
+warning-coloured in two cases:
+
+- the **startup project was never loaded**, so IntelliSense and references miss it;
+- projects were loaded from **outside the selected solution** (`+1`), which is what a
+  `dotrush.roslyn.projectOrSolutionFiles` pointing at another checkout looks like.
+
+The tooltip lists loaded and missing projects. Clicking offers *Reload Workspace* (which
+also resets the count), DotRush's solution picker, and its output channel. The
+`dotnetSolution.languageServerStatus` command returns the same data for other
+extensions; *colored-references* uses it to say *why* a search found nothing.
+
+The count only includes events raised while this extension was listening, so a window
+where DotRush finished before this extension activated shows 0 until a reload.
+
 ## Usage
 
 | Action | How |
diff --git a/package.json b/package.json
index 4520053..9b6e5fc 100644
--- a/package.json
+++ b/package.json
@@ -129,6 +129,22 @@
         "title": "Hot Reload: Actions",
         "category": ".NET Solution"
       },
+      {
+        "command": "dotnetSolution.languageServerReload",
+        "title": "Reload Language Server Workspace (DotRush)",
+        "category": ".NET Solution",
+        "icon": "$(refresh)"
+      },
+      {
+        "command": "dotnetSolution.languageServerMenu",
+        "title": "Language Server Status",
+        "category": ".NET Solution"
+      },
+      {
+        "command": "dotnetSolution.languageServerStatus",
+        "title": "Language Server Status (as data)",
+        "category": ".NET Solution"
+      },
       {
         "command": "dotnetSolution.generateLaunchConfig",
         "title": "Create launch.json and tasks.json entries",
@@ -190,6 +206,10 @@
         {
           "command": "dotnetSolution.hotReload.menu",
           "when": "false"
+        },
+        {
+          "command": "dotnetSolution.languageServerStatus",
+          "when": "false"
         }
       ],
       "debug/toolBar": [
diff --git a/src/dotrush.ts b/src/dotrush.ts
new file mode 100644
index 0000000..dff8809
--- /dev/null
+++ b/src/dotrush.ts
@@ -0,0 +1,153 @@
+import * as vscode from 'vscode';
+import * as path from 'path';
+import { SolutionModel } from './model';
+
+/** What DotRush sends per project in its `dotrush/projectLoaded` notification. */
+interface LoadedProject {
+    name: string;
+    path: string;
+    frameworks?: string[];
+    isTestProject?: boolean;
+}
+
+interface DotRushExports {
+    onProjectLoaded?: { add(callback: (project: LoadedProject) => void): void };
+}
+
+/** Answer of the `dotnetSolution.languageServerStatus` command, for other extensions. */
+export interface LanguageServerStatus {
+    /** Projects of the active solution the language server reported loaded. */
+    loaded: string[];
+    /** Projects of the active solution it has not reported. */
+    missing: string[];
+    /** Loaded projects that are not in the active solution at all. */
+    foreign: string[];
+    /** True when DotRush is not installed, so nothing can be known. */
+    unavailable: boolean;
+}
+
+function samePath(a: string, b: string): boolean {
+    return path.normalize(a).toLowerCase() === path.normalize(b).toLowerCase();
+}
+
+/**
+ * A status bar item saying how much of the solution DotRush's language server has
+ * actually loaded.
+ *
+ * DotRush shows a spinner while loading and nothing afterwards, so when Find References
+ * comes back empty there is no way to tell "no references" from "not indexed". It does
+ * raise one `projectLoaded` event per project through its exports; this collects them
+ * and compares against the solution in the status bar. Two mismatches get the warning
+ * colour: a startup project that was never loaded, and projects loaded from *outside*
+ * the selected solution — which is what a `dotrush.roslyn.projectOrSolutionFiles`
+ * pointing at another checkout looks like.
+ */
+export class LanguageServerIndicator implements vscode.Disposable {
+    private readonly item: vscode.StatusBarItem;
+    private readonly loaded = new Map<string, LoadedProject>();
+    private available = false;
+    private readonly subscriptions: vscode.Disposable[] = [];
+
+    constructor(private readonly model: SolutionModel, private readonly log: vscode.OutputChannel) {
+        this.item = vscode.window.createStatusBarItem('dotnetSolution.languageServer', vscode.StatusBarAlignment.Left, 100.2);
+        this.item.name = '.NET Solution: Language Server';
+        this.item.command = 'dotnetSolution.languageServerMenu';
+        this.subscriptions.push(this.item, model.onDidChange(() => this.render()));
+
+        const dotrush = vscode.extensions.getExtension<DotRushExports>('nromanov.dotrush');
+        if (dotrush) {
+            this.available = true;
+            void dotrush.activate().then(exports => {
+                exports?.onProjectLoaded?.add(project => {
+                    if (!project?.path) {
+                        return;
+                    }
+                    this.loaded.set(path.normalize(project.path).toLowerCase(), project);
+                    this.log.appendLine(`DotRush loaded ${project.name} (${project.path})`);
+                    this.render();
+                });
+            }, error => this.log.appendLine(`DotRush did not activate: ${error}`));
+        }
+        this.render();
+    }
+
+    status(): LanguageServerStatus {
+        const solution = this.model.activeSolution;
+        const projects = solution?.projects ?? [];
+        const loaded: string[] = [];
+        const missing: string[] = [];
+        for (const project of projects) {
+            (this.loaded.has(path.normalize(project.fsPath).toLowerCase()) ? loaded : missing).push(project.name);
+        }
+        const foreign = [...this.loaded.values()]
+            .filter(entry => !projects.some(project => samePath(project.fsPath, entry.path)))
+            .map(entry => entry.name);
+        return { loaded, missing, foreign, unavailable: !this.available };
+    }
+
+    /** Forgets what was loaded and asks DotRush to load again, so the count restarts from zero. */
+    async reload(): Promise<void> {
+        this.loaded.clear();
+        this.render();
+        await vscode.commands.executeCommand('dotrush.reloadWorkspace');
+    }
+
+    render(): void {
+        if (!this.available || !this.model.activeSolution) {
+            this.item.hide();
+            return;
+        }
+        const { loaded, missing, foreign } = this.status();
+        const total = loaded.length + missing.length;
+        const startup = this.model.startupProject?.info.name;
+        const startupMissing = startup !== undefined && missing.includes(startup);
+        const warn = startupMissing || foreign.length > 0;
+
+        const icon = total > 0 && missing.length === 0 ? 'database' : loaded.length === 0 ? 'loading~spin' : 'database';
+        this.item.text = `$(${icon}) ${loaded.length}/${total}${foreign.length ? ` +${foreign.length}` : ''}`;
+        this.item.backgroundColor = warn ? new vscode.ThemeColor('statusBarItem.warningBackground') : undefined;
+
+        const lines = [`**Language server (DotRush):** ${loaded.length} of ${total} projects of \`${this.model.activeSolution.name}\` loaded`];
+        if (loaded.length) {
+            lines.push('', 'Loaded: ' + loaded.map(name => `\`${name}\``).join(', '));
+        }
+        if (missing.length) {
+            lines.push('', 'Not loaded: ' + missing.map(name => `\`${name}\``).join(', '));
+        }
+        if (startupMissing) {
+            lines.push('', `$(warning) The startup project \`${startup}\` is not loaded — Find References and IntelliSense will miss it.`);
+        }
+        if (foreign.length) {
+            lines.push('', `$(warning) Loaded from outside this solution: ${foreign.map(name => `\`${name}\``).join(', ')}. ` +
+                'Check `dotrush.roslyn.projectOrSolutionFiles` — it may point at another checkout.');
+        }
+        if (loaded.length === 0 && missing.length > 0) {
+            lines.push('', 'Still loading, or the events fired before this extension was listening. Click → *Reload Workspace* to resync.');
+        }
+        lines.push('', 'Click for reload and solution picking.');
+        const tooltip = new vscode.MarkdownString(lines.join('  \n'));
+        tooltip.supportThemeIcons = true;
+        this.item.tooltip = tooltip;
+        this.item.show();
+    }
+
+    async menu(): Promise<void> {
+        type Item = vscode.QuickPickItem & { run: () => unknown };
+        const { missing, foreign } = this.status();
+        const items: Item[] = [
+            { label: '$(refresh) Reload Workspace', description: 'DotRush: Reload Workspace, counting from zero', run: () => this.reload() },
+            { label: '$(file-submodule) Pick solution for DotRush', description: 'dotrush.roslyn.projectOrSolutionFiles', run: () => vscode.commands.executeCommand('dotrush.pickProjectOrSolutionFiles') },
+            { label: '$(output) Show DotRush output', run: () => vscode.commands.executeCommand('workbench.action.output.show.extension-output-nromanov.dotrush-#1-DotRush').then(undefined, () => vscode.commands.executeCommand('workbench.action.output.toggleOutput')) },
+        ];
+        const picked = await vscode.window.showQuickPick(items, {
+            title: 'Language server' + (missing.length ? ` — ${missing.length} not loaded` : '') + (foreign.length ? ` — ${foreign.length} foreign` : ''),
+        });
+        await picked?.run();
+    }
+
+    dispose(): void {
+        for (const subscription of this.subscriptions) {
+            subscription.dispose();
+        }
+    }
+}
diff --git a/src/extension.ts b/src/extension.ts
index ee7dca1..a16ad9b 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -7,11 +7,13 @@ import { ALL_TARGETS, createTask, runTask, SolutionTaskProvider, TASK_TYPE, task
 import { launchOptionsFor } from './launch';
 import { StatusBar } from './status';
 import { HotReloadController } from './hotreload/controller';
+import { LanguageServerIndicator } from './dotrush';
 
 let model: SolutionModel;
 let status: StatusBar;
 let log: vscode.OutputChannel;
 let hotReload: HotReloadController;
+let languageServer: LanguageServerIndicator;
 
 function settings() {
     return vscode.workspace.getConfiguration('dotnetSolution');
@@ -306,13 +308,14 @@ export function activate(context: vscode.ExtensionContext): void {
     model = new SolutionModel(context.workspaceState, log);
     status = new StatusBar(model);
     hotReload = new HotReloadController(model, log, () => build('build'));
+    languageServer = new LanguageServerIndicator(model, log);
 
     const active = () => model.active;
     const command = (id: string, handler: (...args: unknown[]) => unknown) =>
         vscode.commands.registerCommand(id, handler);
 
     context.subscriptions.push(
-        log, model, status, hotReload,
+        log, model, status, hotReload, languageServer,
 
         vscode.tasks.registerTaskProvider(TASK_TYPE, new SolutionTaskProvider(model)),
         vscode.debug.registerDebugConfigurationProvider(
@@ -340,6 +343,9 @@ export function activate(context: vscode.ExtensionContext): void {
         command('dotnetSolution.hotReload.detach', () => hotReload.detach()),
         command('dotnetSolution.hotReload.showTerminal', () => hotReload.showTerminal()),
         command('dotnetSolution.hotReload.menu', () => hotReload.menu()),
+        command('dotnetSolution.languageServerMenu', () => languageServer.menu()),
+        command('dotnetSolution.languageServerReload', () => languageServer.reload()),
+        command('dotnetSolution.languageServerStatus', () => languageServer.status()),
         command('dotnetSolution.reload', () => model.reload()),
         command('dotnetSolution.showOutput', () => log.show()),
         command('dotnetSolution.setStartupProject', async (resource?: unknown) => {