improvement(chat): show browser agent site favicons

waleedlatif1 · Sep 11, 2026 · Sep 10, 2026 · Sep 10, 2026 · Sep 10, 2026 · Sep 10, 2026
commit c730028874e47ea06b92d72f20f4db22fbca6731
diff --git a/...[workspaceId]/home/components/message-content/components/agent-group/agent-group-view.tsx b/...[workspaceId]/home/components/message-content/components/agent-group/agent-group-view.tsx
@@ -13,6 +13,7 @@ import { ChevronDown, cn, Expandable, ExpandableContent, OverflowText } from '@s
 import { ShimmerText } from '@/components/ui'
 import { isBrowserAgentAvailable } from '@/lib/browser-agent/transport'
 import { RETIRED_BROWSER_REQUEST_TAKEOVER_ID } from '@/lib/copilot/tools/retired-tools'
+import { BrowserAgentIcon } from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/browser-agent-icon'
 import { renderInlineMarkdown } from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/inline-markdown'
 import { getVisibleMainAgentItems } from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/main-agent-activity'
 import type { ToolCallItemProps } from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/tool-call-item'
@@ -157,6 +158,12 @@ export function AgentGroupView({
   renderBrowserTakeover,
 }: AgentGroupViewProps) {
   const AgentIcon = getAgentIcon(agentName)
+  const agentIcon =
+    agentName === 'browser' ? (
+      <BrowserAgentIcon items={items} />
+    ) : (
+      <AgentIcon className='size-[16px] text-[var(--text-icon)]' />
+    )
   const isMainAgent = agentName === 'mothership'
   // Collapsed status line: the latest tool call, always in its RUNNING
   // phrasing — it never flips to the completed rewrite (that lives in the
@@ -261,9 +268,7 @@ export function AgentGroupView({
           onClick={toggleExpanded}
           className='group/agent flex w-full min-w-0 cursor-pointer items-center gap-2 text-left'
         >
-          <div className='flex size-[16px] shrink-0 items-center justify-center'>
-            <AgentIcon className='size-[16px] text-[var(--text-icon)]' />
-          </div>
+          <div className='flex size-[16px] shrink-0 items-center justify-center'>{agentIcon}</div>
           {isWorking ? (
             <ShimmerText className='min-w-0 truncate text-sm'>{headerText}</ShimmerText>
           ) : (
@@ -278,9 +283,7 @@ export function AgentGroupView({
         </button>
       ) : (
         <div className='flex min-w-0 items-center gap-2'>
-          <div className='flex size-[16px] shrink-0 items-center justify-center'>
-            <AgentIcon className='size-[16px] text-[var(--text-icon)]' />
-          </div>
+          <div className='flex size-[16px] shrink-0 items-center justify-center'>{agentIcon}</div>
           {isWorking ? (
             <ShimmerText className='min-w-0 truncate text-sm'>{headerText}</ShimmerText>
           ) : (

diff --git a/...aceId]/home/components/message-content/components/agent-group/browser-agent-icon.test.tsx b/...aceId]/home/components/message-content/components/agent-group/browser-agent-icon.test.tsx
@@ -0,0 +1,214 @@
+/**
+ * @vitest-environment jsdom
+ */
+import { act } from 'react'
+import { createRoot, type Root } from 'react-dom/client'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import type { AgentGroupItem } from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/agent-group-view'
+import {
+  BrowserAgentIcon,
+  getBrowserAgentHostname,
+} from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/browser-agent-icon'
+import type { ToolCallData } from '@/app/workspace/[workspaceId]/home/types'
+
+function tool(overrides: Partial<ToolCallData> = {}): AgentGroupItem {
+  return {
+    type: 'tool',
+    data: {
+      id: 'browser-tool',
+      toolName: 'browser_navigate',
+      displayTitle: 'Opening page',
+      status: 'success',
+      result: { success: true, output: { url: 'https://example.com/document' } },
+      ...overrides,
+    },
+  }
+}
+
+describe('getBrowserAgentHostname', () => {
+  it('uses the pending destination, then the observed redirect, and retains it during editing', () => {
+    const navigating = tool({
+      status: 'executing',
+      params: { url: 'https://example.org/start' },
+      result: undefined,
+    })
+    expect(getBrowserAgentHostname([tool(), navigating])).toBe('example.org')
+    const redirected = tool({ params: { url: 'https://example.org/start' } })
+    expect(getBrowserAgentHostname([redirected])).toBe('example.com')
+    expect(
+      getBrowserAgentHostname([
+        redirected,
+        tool({ toolName: 'browser_type', status: 'executing', result: undefined }),
+      ])
+    ).toBe('example.com')
+  })
+
+  it.each(['error', 'cancelled', 'rejected', 'awaiting_approval'] as const)(
+    'does not adopt a destination from a %s tool',
+    (status) => {
+      expect(
+        getBrowserAgentHostname([
+          tool(),
+          tool({ status, params: { url: 'https://example.org' }, result: undefined }),
+        ])
+      ).toBe('example.com')
+    }
+  )
+
+  it.each(['', 'about:blank', 'file:///document', 'data:text/html,hello', 'not a URL'])(
+    'clears the previous site for a page without an HTTP hostname: %s',
+    (url) => {
+      expect(
+        getBrowserAgentHostname([
+          tool(),
+          tool({ toolName: 'browser_switch_tab', result: { success: true, output: { url } } }),
+        ])
+      ).toBeNull()
+    }
+  )
+
+  it.each(['browser_open_tab', 'browser_switch_tab', 'browser_close_tab', 'browser_go_back'])(
+    'clears an obsolete site while %s has no known destination',
+    (toolName) => {
+      expect(
+        getBrowserAgentHostname([
+          tool(),
+          tool({ toolName, status: 'executing', result: undefined }),
+        ])
+      ).toBeNull()
+    }
+  )
+
+  it('uses the agent tab from a tab list, including legacy results', () => {
+    const tabs = [
+      { tabId: 'visible', url: 'https://example.org' },
+      { tabId: 'agent', url: 'https://example.com' },
+    ]
+    for (const output of [
+      { tabs, activeTabId: 'visible', automationTabId: 'agent' },
+      { tabs, activeTabId: 'agent' },
+    ]) {
+      expect(
+        getBrowserAgentHostname([
+          tool({ toolName: 'browser_list_tabs', result: { success: true, output } }),
+        ])
+      ).toBe('example.com')
+    }
+    expect(
+      getBrowserAgentHostname([
+        tool(),
+        tool({
+          toolName: 'browser_list_tabs',
+          result: {
+            success: true,
+            output: { tabs, activeTabId: 'visible', automationTabId: null },
+          },
+        }),
+      ])
+    ).toBeNull()
+  })
+
+  it('follows a click into a new tab and screenshot page metadata', () => {
+    for (const [toolName, output] of [
+      [
+        'browser_click',
+        { activeTab: { url: 'https://example.org' }, effect: { tabChanged: true } },
+      ],
+      ['browser_screenshot', { viewport: { url: 'https://example.org' } }],
+      ['browser_extract', { page: { url: 'https://example.org' } }],
+    ] as const) {
+      expect(
+        getBrowserAgentHostname([tool(), tool({ toolName, result: { success: true, output } })])
+      ).toBe('example.org')
+    }
+  })
+
+  it('clears a stale site when an action navigated without reporting its destination', () => {
+    expect(
+      getBrowserAgentHostname([
+        tool(),
+        tool({
+          toolName: 'browser_click',
+          result: { success: true, output: { effect: { urlChanged: true } } },
+        }),
+      ])
+    ).toBeNull()
+  })
+
+  it('ignores URLs from other tools and nested agent runs', () => {
+    expect(
+      getBrowserAgentHostname([
+        tool(),
+        tool({
+          toolName: 'browser_read_text',
+          params: { elementId: 4 },
+          result: { success: true, output: { url: 'https://example.org/embedded' } },
+        }),
+        tool({
+          toolName: 'web_search',
+          result: { success: true, output: { url: 'https://example.org' } },
+        }),
+        {
+          type: 'agent_group',
+          group: {
+            id: 'other-run',
+            agentName: 'browser',
+            agentLabel: 'Browser',
+            isOpen: true,
+            isDelegating: true,
+            items: [tool({ result: { success: true, output: { url: 'https://example.org' } } })],
+          },
+        },
+      ])
+    ).toBe('example.com')
+  })
+})
+
+describe('BrowserAgentIcon', () => {
+  let container: HTMLDivElement
+  let root: Root
+
+  beforeEach(() => {
+    ;(globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true
+    container = document.createElement('div')
+    root = createRoot(container)
+  })
+
+  afterEach(() => act(() => root.unmount()))
+
+  const render = (url: string) => {
+    act(() =>
+      root.render(
+        <BrowserAgentIcon items={[tool({ result: { success: true, output: { url } } })]} />
+      )
+    )
+  }
+
+  it('keeps the globe until load and resets image state when the hostname changes', () => {
+    render('https://example.com/document?token=private#section')
+    const firstImage = container.querySelector('img')!
+    expect(firstImage.src).toBe('https://www.google.com/s2/favicons?domain=example.com&sz=32')
+    expect(container.querySelector('svg')).not.toBeNull()
+    act(() => firstImage.dispatchEvent(new Event('load')))
+    expect(container.querySelector('svg')).toBeNull()
+
+    render('https://example.com/another-document')
+    expect(container.querySelector('img')).toBe(firstImage)
+    expect(container.querySelector('svg')).toBeNull()
+
+    render('https://example.org/document')
+    expect(container.querySelector('img')).not.toBe(firstImage)
+    expect(container.querySelector('svg')).not.toBeNull()
+    act(() => firstImage.dispatchEvent(new Event('error')))
+    expect(container.querySelector('img')).not.toBeNull()
+    act(() => container.querySelector('img')!.dispatchEvent(new Event('error')))
+    expect(container.querySelector('img')).toBeNull()
+    expect(container.querySelector('svg')).not.toBeNull()
+
+    render('https://example.com')
+    expect(container.querySelector('img')).not.toBeNull()
+    render('about:blank')
+    expect(container.querySelector('img')).toBeNull()
+    expect(container.querySelector('svg')).not.toBeNull()
+  })
+})
diff --git a/...orkspaceId]/home/components/message-content/components/agent-group/browser-agent-icon.tsx b/...orkspaceId]/home/components/message-content/components/agent-group/browser-agent-icon.tsx
@@ -0,0 +1,114 @@
+'use client'
+
+import { useState } from 'react'
+import { isBrowserToolName } from '@sim/browser-protocol'
+import { cn } from '@sim/emcn'
+import { Globe } from '@sim/emcn/icons'
+import { isRecordLike } from '@sim/utils/object'
+import { browserTabHostname } from '@/lib/browser-agent/tab-label'
+import { faviconUrl } from '@/lib/core/utils/favicon'
+import type { AgentGroupItem } from '@/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/agent-group-view'
+import { ToolCallStatus } from '@/app/workspace/[workspaceId]/home/types'
+
+/** Uses this run's page observations so historical icons never follow another run's live tab. */
+export function getBrowserAgentHostname(items: AgentGroupItem[]): string | null {
+  for (let index = items.length - 1; index >= 0; index--) {
+    const item = items[index]
+    if (item.type !== 'tool' || !isBrowserToolName(item.data.toolName)) continue
+    const { toolName, status, params, result } = item.data
+    if (status !== ToolCallStatus.executing && status !== ToolCallStatus.success) continue
+    /** Element-scoped reads can report an iframe URL rather than the browser page. */
+    if (toolName === 'browser_read_text' && params?.elementId !== undefined) continue
+
+    const navigatesToUrl =
+      toolName === 'browser_navigate' ||
+      toolName === 'browser_open_url' ||
+      toolName === 'browser_open_tab'
+    if (status === ToolCallStatus.executing && navigatesToUrl) {
+      return typeof params?.url === 'string' ? browserTabHostname(params.url) : null
+    }
+
+    const output = result?.success && isRecordLike(result.output) ? result.output : null
+    if (output) {
+      if (isRecordLike(output.activeTab) && typeof output.activeTab.url === 'string') {
+        return browserTabHostname(output.activeTab.url)
+      }
+      if (typeof output.url === 'string') return browserTabHostname(output.url)
+      if (
+        toolName === 'browser_extract' &&
+        isRecordLike(output.page) &&
+        typeof output.page.url === 'string'
+      ) {
+        return browserTabHostname(output.page.url)
+      }
+      if (
+        toolName === 'browser_screenshot' &&
+        isRecordLike(output.viewport) &&
+        typeof output.viewport.url === 'string'
+      ) {
+        return browserTabHostname(output.viewport.url)
+      }
+      if (toolName === 'browser_list_tabs' && Array.isArray(output.tabs)) {
+        const tabId = 'automationTabId' in output ? output.automationTabId : output.activeTabId
+        const tab = output.tabs.find((tab) => isRecordLike(tab) && tab.tabId === tabId)
+        return isRecordLike(tab) && typeof tab.url === 'string' ? browserTabHostname(tab.url) : null
+      }
+      /** A navigation without a destination invalidates the previous page observation. */
+      if (
+        isRecordLike(output.effect) &&
+        (output.effect.urlChanged === true ||
+          output.effect.topUrlChanged === true ||
+          output.effect.tabChanged === true)
+      ) {
+        return null
+      }
+    }
+    if (
+      navigatesToUrl ||
+      toolName === 'browser_switch_tab' ||
+      toolName === 'browser_close_tab' ||
+      toolName === 'browser_go_back' ||
+      toolName === 'browser_go_forward'
+    ) {
+      return null
+    }
+  }
+  return null
+}
+
+interface BrowserAgentIconProps {
+  items: AgentGroupItem[]
+}
+
+export function BrowserAgentIcon({ items }: BrowserAgentIconProps) {
+  const hostname = getBrowserAgentHostname(items)
+  return <BrowserAgentFavicon key={hostname} hostname={hostname} />
+}
+
+interface BrowserAgentFaviconProps {
+  hostname: string | null
+}
+
+function BrowserAgentFavicon({ hostname }: BrowserAgentFaviconProps) {
+  const [status, setStatus] = useState<'loading' | 'loaded' | 'failed'>('loading')
+
+  return (
+    <span className='relative flex size-[16px] items-center justify-center' aria-hidden='true'>
+      {hostname && status !== 'failed' && (
+        <img
+          src={faviconUrl(hostname, 32)}
+          alt=''
+          className={cn(
+            'size-[16px] rounded-[3px]',
+            status !== 'loaded' && 'pointer-events-none absolute opacity-0'
+          )}
+          onLoad={() => setStatus('loaded')}
+          onError={() => setStatus('failed')}
+        />
+      )}
+      {(!hostname || status !== 'loaded') && (
+        <Globe className='size-[16px] text-[var(--text-icon)]' />
+      )}
+    </span>
+  )
+}