diff --git a/src/renderer/src/lib/claude-launch-proxy-notice.test.ts b/src/renderer/src/lib/claude-launch-proxy-notice.test.ts
new file mode 100644
index 00000000000..ba3e2a51e2a
--- /dev/null
+++ b/src/renderer/src/lib/claude-launch-proxy-notice.test.ts
@@ -0,0 +1,27 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { warnIfConfiguredClaudeProxy } from './claude-launch-proxy-notice'
+
+const warning = vi.hoisted(() => vi.fn())
+vi.mock('sonner', () => ({ toast: { warning } }))
+
+describe('warnIfConfiguredClaudeProxy', () => {
+  beforeEach(() => warning.mockClear())
+
+  it('explains the configured proxy for Claude launches', () => {
+    warnIfConfiguredClaudeProxy('claude', { httpProxyUrl: 'http://127.0.0.1:9' })
+    expect(warning).toHaveBeenCalledWith(
+      expect.stringContaining(
+        'target host is routed through it unless covered by its bypass rules'
+      ),
+      {
+        duration: 12_000
+      }
+    )
+  })
+
+  it('does not warn for agents without a configured proxy', () => {
+    warnIfConfiguredClaudeProxy('codex', { httpProxyUrl: 'http://127.0.0.1:9' })
+    warnIfConfiguredClaudeProxy('claude', {})
+    expect(warning).not.toHaveBeenCalled()
+  })
+})
diff --git a/src/renderer/src/lib/claude-launch-proxy-notice.ts b/src/renderer/src/lib/claude-launch-proxy-notice.ts
new file mode 100644
index 00000000000..4b09b5e3ba7
--- /dev/null
+++ b/src/renderer/src/lib/claude-launch-proxy-notice.ts
@@ -0,0 +1,18 @@
+import { toast } from 'sonner'
+import type { TuiAgent } from '../../../shared/tui-agent'
+
+type ProxySettings = { httpProxyUrl?: string }
+
+/** Explain the app-level proxy context before a Claude process makes its first request. */
+export function warnIfConfiguredClaudeProxy(
+  agent: TuiAgent,
+  settings: ProxySettings | null | undefined
+): void {
+  if (agent !== 'claude' || !settings?.httpProxyUrl?.trim()) {
+    return
+  }
+  toast.warning(
+    'Orca network proxy is configured for this Claude launch; the target host is routed through it unless covered by its bypass rules. If Claude reports ConnectionRefused, check Settings → Advanced → Network.',
+    { duration: 12_000 }
+  )
+}
diff --git a/src/renderer/src/lib/launch-agent-in-new-tab.test.ts b/src/renderer/src/lib/launch-agent-in-new-tab.test.ts
index 5f9ce256885..29c24d2cd03 100644
--- a/src/renderer/src/lib/launch-agent-in-new-tab.test.ts
+++ b/src/renderer/src/lib/launch-agent-in-new-tab.test.ts
@@ -13,6 +13,7 @@ const mockSeedNativeChatLaunchDraft = vi.fn()
 const mockMarkNativeChatLaunchPromptFailed = vi.fn()
 const mockTrack = vi.fn()
 const mockToastMessage = vi.fn()
+const mockToastWarning = vi.fn()
 
 const LEAF_ID = '11111111-1111-4111-8111-111111111111'
 
@@ -93,9 +94,8 @@ vi.mock('@/store', () => ({
 }))
 
 const mockToastError = vi.fn()
-
 vi.mock('sonner', () => ({
-  toast: { message: mockToastMessage, error: mockToastError }
+  toast: { message: mockToastMessage, error: mockToastError, warning: mockToastWarning }
 }))
 
 vi.mock('@/components/tab-bar/reconcile-order', () => ({
@@ -173,6 +173,16 @@ describe('launchAgentInNewTab', () => {
     mockPasteDraftWhenAgentReady.mockResolvedValue(true)
   })
 
+  it('does not attribute a local proxy to Claude launches on SSH hosts', async () => {
+    Reflect.set(store.settings, 'httpProxyUrl', 'http://127.0.0.1:9')
+    store.repos = [{ id: 'repo-1', connectionId: 'ssh-target-1', path: '/repo' }]
+    const { launchAgentInNewTab } = await import('./launch-agent-in-new-tab')
+
+    launchAgentInNewTab({ agent: 'claude', worktreeId: 'wt-1' })
+
+    expect(mockToastWarning).not.toHaveBeenCalled()
+  })
+
   it('stamps the launched agent on the new tab for immediate provider icon bootstrap', async () => {
     const { launchAgentInNewTab } = await import('./launch-agent-in-new-tab')
 
diff --git a/src/renderer/src/lib/launch-agent-in-new-tab.ts b/src/renderer/src/lib/launch-agent-in-new-tab.ts
index d46cb530bd6..1e2837fa796 100644
--- a/src/renderer/src/lib/launch-agent-in-new-tab.ts
+++ b/src/renderer/src/lib/launch-agent-in-new-tab.ts
@@ -29,6 +29,7 @@ import type { LaunchSource } from '../../../shared/telemetry-events'
 import { getConnectionIdFromState } from '@/lib/connection-context'
 import { resolveInitialNativeChatSessionOptions } from '@/components/native-chat/native-chat-launch-session-options'
 import { seedNativeChatAppliedSessionOptions } from '@/components/native-chat/native-chat-session-option-cache'
+import { warnIfConfiguredClaudeProxy } from '@/lib/claude-launch-proxy-notice'
 
 export type LaunchAgentInNewTabArgs = {
   agent: TuiAgent
@@ -173,6 +174,11 @@ export function launchAgentInNewTab(args: LaunchAgentInNewTabArgs): LaunchAgentI
     }
   }
 
+  // The app-level proxy is injected into local PTYs (including WSL), not SSH or paired web hosts.
+  if (!isRemote) {
+    warnIfConfiguredClaudeProxy(agent, store.settings)
+  }
+
   // Why: queue startup BEFORE TerminalPane mounts — it snapshots pendingStartupByTabId in useState on first render.
   // Why: followup path pastes an unsubmitted draft, so gate the initial chat view like a draft launch, not auto-submit.
   const tab = store.createTab(worktreeId, groupId, undefined, {