diff --git a/web/projects/ui/src/app/app.config.ts b/web/projects/ui/src/app/app.config.ts
index 8b4436073..3bd32bd93 100644
--- a/web/projects/ui/src/app/app.config.ts
+++ b/web/projects/ui/src/app/app.config.ts
@@ -37,7 +37,7 @@ import {
   VERSION,
   WorkspaceConfig,
 } from '@start9labs/shared'
-import { tuiObfuscateOptionsProvider } from '@taiga-ui/cdk'
+import { TUI_WINDOW_SIZE, tuiObfuscateOptionsProvider } from '@taiga-ui/cdk'
 import {
   provideTaiga,
   TUI_DIALOGS_CLOSE,
@@ -67,11 +67,12 @@ import {
   PATCH_CACHE,
   PatchDbSource,
 } from 'src/app/services/patch-db/patch-db-source'
+import { PluginsService } from 'src/app/services/plugins.service'
 import { StateService } from 'src/app/services/state.service'
 import { StorageService } from 'src/app/services/storage.service'
 import {
-  DateTransformer,
   DatetimeTransformer,
+  DateTransformer,
 } from 'src/app/utils/value-transformers'
 import { environment } from 'src/environments/environment'
 
@@ -185,5 +186,9 @@ export const APP_CONFIG: ApplicationConfig = {
         desktopLarge: Infinity,
       },
     },
+    {
+      provide: TUI_WINDOW_SIZE,
+      useExisting: PluginsService,
+    },
   ],
 }
diff --git a/web/projects/ui/src/app/routes/portal/components/header/header.component.ts b/web/projects/ui/src/app/routes/portal/components/header/header.component.ts
index 28ef803f7..d24076f51 100644
--- a/web/projects/ui/src/app/routes/portal/components/header/header.component.ts
+++ b/web/projects/ui/src/app/routes/portal/components/header/header.component.ts
@@ -16,6 +16,7 @@ import { HeaderStatusComponent } from './status.component'
   template: `
     <header-navigation />
     <div class="item item_center">
+      <ng-content />
       <div class="mobile"><ng-container #vcr /></div>
     </div>
     <header-status class="item item_connection" />
diff --git a/web/projects/ui/src/app/routes/portal/components/plugins.component.ts b/web/projects/ui/src/app/routes/portal/components/plugins.component.ts
new file mode 100644
index 000000000..c14e6e2ba
--- /dev/null
+++ b/web/projects/ui/src/app/routes/portal/components/plugins.component.ts
@@ -0,0 +1,100 @@
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core'
+import { FormsModule } from '@angular/forms'
+import { WA_IS_MOBILE } from '@ng-web-apis/platform'
+import { TuiAnimated } from '@taiga-ui/cdk'
+import { TuiButton, TuiPopup } from '@taiga-ui/core'
+import { ResizerComponent } from 'src/app/routes/portal/components/resizer.component'
+import { PluginsService } from 'src/app/services/plugins.service'
+
+@Component({
+  selector: 'app-plugins',
+  template: `
+    <button
+      tuiIconButton
+      iconStart="@tui.bot-message-square"
+      [appearance]="service.enabled() ? 'positive' : 'icon'"
+      (click)="service.enabled.set(!service.enabled())"
+    >
+      AI assistant
+    </button>
+    <aside
+      *tuiPopup="service.enabled()"
+      tuiAnimated
+      [class._mobile]="mobile"
+      [style.--plugins]="service.size() / 100"
+      (click.self)="onClick($any($event).layerX)"
+    >
+      Plugin placeholder
+    </aside>
+    <input
+      *tuiPopup="service.enabled()"
+      appResizer
+      type="range"
+      step="0.1"
+      [(ngModel)]="service.size"
+    />
+  `,
+  styles: `
+    :host {
+      float: inline-end;
+      margin-inline-end: 0.5rem;
+    }
+
+    [tuiIconButton] {
+      background: transparent;
+    }
+
+    aside {
+      position: fixed;
+      inset: 0 0 0 calc(320px + (100% - 640px) * var(--plugins));
+      display: flex;
+      place-content: center;
+      place-items: center;
+      margin: var(--bumper) var(--bumper) var(--bumper) 0;
+      background: color-mix(in hsl, var(--start9-base-2) 75%, transparent);
+      background-image: linear-gradient(
+        transparent,
+        var(--tui-background-base)
+      );
+      backdrop-filter: blur(1rem);
+      border-radius: var(--bumper);
+
+      --tui-from: translateX(100%);
+
+      &._mobile {
+        inset-inline-start: 20%;
+        box-shadow:
+          inset 0 1px rgba(255, 255, 255, 0.25),
+          0 0 0 100vh rgb(0 0 0 / 50%);
+
+        &::before {
+          content: '';
+          position: fixed;
+          inset: -100vh;
+        }
+
+        &.tui-enter,
+        &.tui-leave {
+          animation-name: tuiSlide, tuiFade;
+        }
+      }
+
+      &.tui-enter,
+      &.tui-leave {
+        animation-name: tuiSlide;
+      }
+    }
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [FormsModule, TuiButton, ResizerComponent, TuiPopup, TuiAnimated],
+})
+export class PluginsComponent {
+  protected readonly mobile = inject(WA_IS_MOBILE)
+  protected readonly service = inject(PluginsService)
+
+  protected onClick(layerX: number) {
+    if (layerX < 0 && this.mobile) {
+      this.service.enabled.set(false)
+    }
+  }
+}
diff --git a/web/projects/ui/src/app/routes/portal/components/resizer.component.ts b/web/projects/ui/src/app/routes/portal/components/resizer.component.ts
new file mode 100644
index 000000000..e02e0f89d
--- /dev/null
+++ b/web/projects/ui/src/app/routes/portal/components/resizer.component.ts
@@ -0,0 +1,56 @@
+import { ChangeDetectionStrategy, Component } from '@angular/core'
+
+@Component({
+  selector: 'input[type="range"][appResizer]',
+  template: '',
+  styles: `
+    @use '@taiga-ui/styles/utils' as taiga;
+
+    :host {
+      @include taiga.transition(color);
+
+      position: fixed;
+      inset: 0 calc(320px - var(--bumper)) 0 calc(320px - 2 * var(--bumper));
+      appearance: none;
+      pointer-events: none;
+      background: none;
+      color: transparent;
+      outline: none;
+      cursor: ew-resize;
+
+      &:hover {
+        color: var(--tui-background-neutral-1-hover);
+      }
+
+      &::-webkit-slider-runnable-track {
+        block-size: 100%;
+      }
+
+      &::-webkit-slider-thumb {
+        block-size: 100%;
+        inline-size: calc(var(--bumper) * 3);
+        padding: var(--bumper);
+        appearance: none;
+        background: currentColor;
+        background-clip: content-box;
+        border: none;
+        pointer-events: auto;
+        border-radius: var(--tui-radius-l);
+      }
+
+      &::-moz-range-thumb {
+        block-size: 100%;
+        inline-size: calc(var(--bumper) * 3);
+        padding: var(--bumper);
+        appearance: none;
+        background: currentColor;
+        background-clip: content-box;
+        border: none;
+        pointer-events: auto;
+        border-radius: var(--tui-radius-l);
+      }
+    }
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ResizerComponent {}
diff --git a/web/projects/ui/src/app/routes/portal/portal.component.ts b/web/projects/ui/src/app/routes/portal/portal.component.ts
index 91b861124..073904924 100644
--- a/web/projects/ui/src/app/routes/portal/portal.component.ts
+++ b/web/projects/ui/src/app/routes/portal/portal.component.ts
@@ -6,6 +6,7 @@ import {
 } from '@angular/core'
 import { toSignal } from '@angular/core/rxjs-interop'
 import { RouterOutlet } from '@angular/router'
+import { WA_IS_MOBILE } from '@ng-web-apis/platform'
 import { ErrorService } from '@start9labs/shared'
 import {
   TuiButton,
@@ -21,15 +22,17 @@ import {
   TuiProgress,
 } from '@taiga-ui/kit'
 import { PatchDB } from 'patch-db-client'
+import { PluginsComponent } from 'src/app/routes/portal/components/plugins.component'
 import { TabsComponent } from 'src/app/routes/portal/components/tabs.component'
 import { ApiService } from 'src/app/services/api/embassy-api.service'
 import { OSService } from 'src/app/services/os.service'
 import { DataModel } from 'src/app/services/patch-db/data-model'
+import { PluginsService } from 'src/app/services/plugins.service'
 import { HeaderComponent } from './components/header/header.component'
 
 @Component({
   template: `
-    <header appHeader>{{ name() }}</header>
+    <header appHeader><app-plugins /></header>
     <main>
       <tui-scrollbar [style.max-height.%]="100">
         <router-outlet />
@@ -67,19 +70,47 @@ import { HeaderComponent } from './components/header/header.component'
   styles: `
     @use '@taiga-ui/styles/utils' as taiga;
 
+    @keyframes open {
+      from {
+        inline-size: 100%;
+      }
+
+      to {
+        inline-size: calc(320px + (100% - 640px) * var(--plugins));
+      }
+    }
+
     :host {
-      height: 100%;
+      @include taiga.transition(inline-size);
+
+      block-size: 100%;
+      inline-size: 100%;
       display: flex;
       flex-direction: column;
-      // @TODO Theme
-      background: url(/assets/img/background_dark.jpeg) fixed center/cover;
 
-      &::before {
+      &._plugins {
+        inline-size: calc(320px + (100% - 640px) * var(--plugins));
+        animation: open var(--tui-duration) ease-in-out;
+        transition: none;
+
+        app-tabs {
+          inline-size: calc(100% - var(--bumper));
+        }
+      }
+
+      &::before,
+      &::after {
         content: '';
         position: fixed;
         inset: 0;
         backdrop-filter: blur(0.5rem);
       }
+
+      &::after {
+        z-index: -1;
+        // @TODO Theme
+        background: url(/assets/img/background_dark.jpeg) fixed center/cover;
+      }
     }
 
     main {
@@ -101,6 +132,10 @@ import { HeaderComponent } from './components/header/header.component'
       text-wrap: balance;
     }
   `,
+  host: {
+    '[class._plugins]': '!mobile && plugins.enabled()',
+    '[style.--plugins]': 'plugins.size() / 100',
+  },
   changeDetection: ChangeDetectionStrategy.OnPush,
   imports: [
     RouterOutlet,
@@ -114,6 +149,7 @@ import { HeaderComponent } from './components/header/header.component'
     TuiButton,
     TuiPopup,
     TuiCell,
+    PluginsComponent,
   ],
 })
 export class PortalComponent {
@@ -122,6 +158,8 @@ export class PortalComponent {
   private readonly patch = inject<PatchDB<DataModel>>(PatchDB)
   private readonly api = inject(ApiService)
 
+  readonly mobile = inject(WA_IS_MOBILE)
+  readonly plugins = inject(PluginsService)
   readonly name = toSignal(this.patch.watch$('serverInfo', 'name'))
   readonly update = toSignal(inject(OSService).updating$)
   readonly bar = signal(true)
diff --git a/web/projects/ui/src/app/services/plugins.service.ts b/web/projects/ui/src/app/services/plugins.service.ts
new file mode 100644
index 000000000..e1a6f58ea
--- /dev/null
+++ b/web/projects/ui/src/app/services/plugins.service.ts
@@ -0,0 +1,37 @@
+import { inject, Injectable, INJECTOR, Injector, signal } from '@angular/core'
+import { toObservable } from '@angular/core/rxjs-interop'
+import { WA_IS_MOBILE } from '@ng-web-apis/platform'
+import { TUI_WINDOW_SIZE } from '@taiga-ui/cdk'
+import { TUI_MEDIA } from '@taiga-ui/core'
+import { combineLatest, map, Observable } from 'rxjs'
+
+@Injectable({ providedIn: 'root' })
+export class PluginsService extends Observable<DOMRect> {
+  public readonly enabled = signal(false)
+  public readonly size = signal(100)
+
+  // @ts-expect-error triggering TUI_WINDOW_SIZE default factory
+  private readonly window = Injector.create({
+    parent: inject(INJECTOR),
+    providers: [{ provide: TUI_WINDOW_SIZE }],
+  }).get(TUI_WINDOW_SIZE)
+
+  private readonly media = inject(TUI_MEDIA)
+  private readonly stream = inject(WA_IS_MOBILE)
+    ? this.window
+    : combineLatest([
+        this.window,
+        toObservable(this.size),
+        toObservable(this.enabled),
+      ]).pipe(
+        map(([window, size, enabled]) =>
+          window.width < this.media.mobile || !enabled
+            ? window
+            : { ...window, width: 320 + (window.width - 640) * (size / 100) },
+        ),
+      )
+
+  constructor() {
+    super(subscriber => this.stream.subscribe(subscriber))
+  }
+}