diff --git a/packages/web/src/pages/chat-page.test.tsx b/packages/web/src/pages/chat-page.test.tsx
new file mode 100644
index 00000000..1a067138
--- /dev/null
+++ b/packages/web/src/pages/chat-page.test.tsx
@@ -0,0 +1,91 @@
+/// <reference types="bun" />
+
+import type {ChatPersona, ThreadLog} from '@proxy/contracts/harness';
+import {ThemeProvider} from '@proxy/ui/components/theme-provider';
+import {TooltipProvider} from '@proxy/ui/components/tooltip';
+import {afterEach, beforeEach, describe, expect, mock, test} from 'bun:test';
+import {cleanup, fireEvent, render, screen, waitFor} from '@testing-library/react';
+import {createMemoryRouter, RouterProvider} from 'react-router';
+import {HumanSide} from '@/components/human-side';
+import {ChatPage} from '@/pages/chat-page';
+import {testHuman} from '@/test-org';
+
+const realFetch = globalThis.fetch;
+const fetchMock = mock<(input: string, init?: RequestInit) => Promise<Response>>();
+const look = {nose: 0.48, noseOut: 0.35, eye: 27, eyeTheta: 55, eyeLat: 8, eyes: 2 as const};
+
+function persona(id: string, name: string, mayChange: boolean): ChatPersona {
+	return {id, name, mayChange, look, color: 'blue', lastMessage: null};
+}
+
+const general = persona('general', 'General', false);
+const finance = persona('finance', 'Finance', true);
+const log: ThreadLog = {persona: general, entries: [], busy: false, sleepingUntil: null};
+
+beforeEach(() => {
+	fetchMock.mockReset();
+	fetchMock.mockImplementation(() => Promise.resolve(new Response(null, {status: 204})));
+	globalThis.fetch = ((input: string, init?: RequestInit) =>
+		fetchMock(input, init)) as typeof fetch;
+});
+
+afterEach(() => {
+	cleanup();
+	globalThis.fetch = realFetch;
+});
+
+function renderChatPage() {
+	const router = createMemoryRouter(
+		[
+			{
+				id: 'human',
+				loader: () => testHuman(),
+				element: <HumanSide />,
+				children: [
+					{
+						path: '/:org/chat/:id',
+						loader: () => ({log, personas: [general, finance]}),
+						element: <ChatPage />,
+					},
+				],
+			},
+		],
+		{initialEntries: ['/acme/chat/general']},
+	);
+
+	return render(
+		<ThemeProvider>
+			<TooltipProvider>
+				<RouterProvider router={router} />
+			</TooltipProvider>
+		</ThemeProvider>,
+	);
+}
+
+describe('ChatPage', () => {
+	test('deletes a changeable agent from its right-click menu after confirmation', async () => {
+		renderChatPage();
+
+		fireEvent.contextMenu(await screen.findByRole('link', {name: /Finance/}));
+		fireEvent.click(await screen.findByRole('menuitem', {name: 'Delete'}));
+
+		expect(screen.getByRole('heading', {name: 'Delete Finance?'})).toBeDefined();
+		expect(screen.getByText(/every member's conversation/)).toBeDefined();
+		fireEvent.click(screen.getByRole('button', {name: 'Delete'}));
+
+		await waitFor(() => {
+			expect(fetchMock).toHaveBeenCalledWith(
+				'/api/orgs/acme/chat/personas/finance',
+				expect.objectContaining({method: 'DELETE'}),
+			);
+		});
+	});
+
+	test('does not offer deletion for a protected agent', async () => {
+		renderChatPage();
+
+		fireEvent.contextMenu(await screen.findByRole('link', {name: /General/}));
+
+		expect(screen.queryByRole('menuitem', {name: 'Delete'})).toBeNull();
+	});
+});
diff --git a/packages/web/src/pages/chat-page.tsx b/packages/web/src/pages/chat-page.tsx
index 26733089..c9cfa1eb 100644
--- a/packages/web/src/pages/chat-page.tsx
+++ b/packages/web/src/pages/chat-page.tsx
@@ -1,5 +1,5 @@
 import type {ChatEntry, ChatPersona, Persona, ThreadLog} from '@proxy/contracts/harness';
-import {ArrowUpIcon, ChevronDownIcon, MoonIcon, PlusIcon} from 'lucide-react';
+import {ArrowUpIcon, ChevronDownIcon, MoonIcon, PlusIcon, Trash2Icon} from 'lucide-react';
 import {type FormEvent, type KeyboardEvent, useCallback, useEffect, useRef, useState} from 'react';
 import {Link, useLoaderData, useNavigate, useRevalidator} from 'react-router';
 import {
@@ -10,6 +10,7 @@ import {
 	updatePersona,
 } from '@/client/harness-client';
 import {AppShell} from '@/components/app-shell';
+import {ConfirmDialog} from '@/components/confirm-dialog';
 import {Head, LiveHead} from '@/components/head';
 import {Markdown} from '@/components/markdown';
 import {PersonaDialog} from '@/components/persona-dialog';
@@ -36,6 +37,12 @@ import {useOrgSlug} from '@/hooks/use-org';
 import {formatAgo, formatDateTime} from '@/lib/format';
 import {describeFetchError} from '@/lib/loader-utils';
 import type {chatLoader} from '@/loaders';
+import {
+	ContextMenu,
+	ContextMenuContent,
+	ContextMenuItem,
+	ContextMenuTrigger,
+} from '@proxy/ui/components/context-menu';
 
 // How often the log is read again while the agent is at work, and while it is not: a reply, or a
 // wake-up, shows within a moment either way.
@@ -116,11 +123,13 @@ function PersonaList({
 	current,
 	currentLog,
 	onNew,
+	onDelete,
 }: {
 	personas: ChatPersona[];
 	current: string;
 	currentLog: ThreadLog;
 	onNew: () => void;
+	onDelete: (persona: ChatPersona) => void;
 }) {
 	const org = useOrgSlug();
 	const [watching, setWatching] = useState(false);
@@ -137,41 +146,53 @@ function PersonaList({
 				<ul className="flex flex-col gap-0.5">
 					{personas.map((persona) => {
 						const last = persona.id === current ? lastOf(currentLog) : persona.lastMessage;
-						return (
-							<li key={persona.id}>
-								<Link
-									to={`/${org}/chat/${persona.id}`}
-									aria-current={persona.id === current ? 'page' : undefined}
-									className={cn(
-										'flex w-full items-center gap-3 rounded-lg px-2 py-2 text-left hover:bg-sidebar-accent hover:text-sidebar-accent-foreground',
-										persona.id === current && 'bg-sidebar-accent text-sidebar-accent-foreground',
-									)}
-								>
-									{persona.id === current ? (
-										<LiveHead
-											look={persona.look}
-											color={persona.color}
-											size={40}
-											watching={watching}
-										/>
-									) : (
-										<Head look={persona.look} color={persona.color} size={40} />
-									)}
-									<span className="flex min-w-0 flex-1 flex-col">
-										<span className="flex items-baseline gap-2">
-											<span className="min-w-0 flex-1 truncate text-sm font-medium">
-												{persona.name}
-											</span>
-											{last && (
-												<span className="shrink-0 text-xs text-muted-foreground">
-													{formatAgo(last.at)}
-												</span>
-											)}
+						const row = (
+							<Link
+								to={`/${org}/chat/${persona.id}`}
+								aria-current={persona.id === current ? 'page' : undefined}
+								className={cn(
+									'flex w-full items-center gap-3 rounded-lg px-2 py-2 text-left hover:bg-sidebar-accent hover:text-sidebar-accent-foreground',
+									persona.id === current && 'bg-sidebar-accent text-sidebar-accent-foreground',
+								)}
+							>
+								{persona.id === current ? (
+									<LiveHead
+										look={persona.look}
+										color={persona.color}
+										size={40}
+										watching={watching}
+									/>
+								) : (
+									<Head look={persona.look} color={persona.color} size={40} />
+								)}
+								<span className="flex min-w-0 flex-1 flex-col">
+									<span className="flex items-baseline gap-2">
+										<span className="min-w-0 flex-1 truncate text-sm font-medium">
+											{persona.name}
 										</span>
-										<span className="truncate text-xs text-muted-foreground">{subtitle(last)}</span>
+										{last && (
+											<span className="shrink-0 text-xs text-muted-foreground">
+												{formatAgo(last.at)}
+											</span>
+										)}
 									</span>
-								</Link>
-							</li>
+									<span className="truncate text-xs text-muted-foreground">{subtitle(last)}</span>
+								</span>
+							</Link>
+						);
+						if (!persona.mayChange) {
+							return <li key={persona.id}>{row}</li>;
+						}
+						return (
+							<ContextMenu key={persona.id}>
+								<ContextMenuTrigger render={<li />}>{row}</ContextMenuTrigger>
+								<ContextMenuContent>
+									<ContextMenuItem variant="destructive" onClick={() => onDelete(persona)}>
+										<Trash2Icon />
+										Delete
+									</ContextMenuItem>
+								</ContextMenuContent>
+							</ContextMenu>
 						);
 					})}
 				</ul>
@@ -213,6 +234,7 @@ function Conversation({loaded}: {loaded: Loaded}) {
 	const [error, setError] = useState<string | null>(null);
 	// The agent dialog: making a new one, or changing this one; closed as null.
 	const [editing, setEditing] = useState<'new' | 'current' | null>(null);
+	const [deleting, setDeleting] = useState<ChatPersona | null>(null);
 	const form = useRef<HTMLFormElement>(null);
 	const personaId = loaded.log.persona.id;
 	const current = loaded.log.persona;
@@ -282,14 +304,19 @@ function Conversation({loaded}: {loaded: Loaded}) {
 		return null;
 	};
 
-	// Deletes this persona with everyone's conversations with it, and opens whichever is first.
-	const removePersona = async (): Promise<string | null> => {
-		const removed = await deletePersona(org, personaId);
+	// Deletes a persona with everyone's conversations with it. If it was open, opens whichever is
+	// first; otherwise refreshes the list around the conversation that stays open.
+	const removePersona = async (persona: ChatPersona) => {
+		const removed = await deletePersona(org, persona.id);
 		if (removed.isErr()) {
-			return describeFetchError(removed.error);
+			setError(describeFetchError(removed.error));
+			return;
 		}
-		void navigate(`/${org}/chat`);
-		return null;
+		if (persona.id === personaId) {
+			void navigate(`/${org}/chat`);
+			return;
+		}
+		await revalidator.revalidate();
 	};
 
 	// Turns in a row from the same side sit closer together than the sides do.
@@ -326,6 +353,7 @@ function Conversation({loaded}: {loaded: Loaded}) {
 					current={personaId}
 					currentLog={log}
 					onNew={() => setEditing('new')}
+					onDelete={setDeleting}
 				/>
 			}
 			panelLabel="Agents"
@@ -342,9 +370,34 @@ function Conversation({loaded}: {loaded: Loaded}) {
 					}
 					onClose={() => setEditing(null)}
 					onSave={savePersona}
-					onDelete={editing === 'current' ? removePersona : undefined}
+					onDelete={
+						editing === 'current'
+							? async () => {
+									setDeleting(current);
+									return null;
+								}
+							: undefined
+					}
 				/>
 			)}
+			<ConfirmDialog
+				open={deleting !== null}
+				title={deleting ? `Delete ${deleting.name}?` : ''}
+				description={
+					deleting
+						? `This deletes ${deleting.name} and every member's conversation with it. This cannot be undone.`
+						: ''
+				}
+				confirmLabel="Delete"
+				destructive
+				onClose={() => setDeleting(null)}
+				onConfirm={() => {
+					if (!deleting) {
+						return;
+					}
+					void removePersona(deleting);
+				}}
+			/>
 			<MessageScrollerProvider autoScroll defaultScrollPosition="end">
 				<MessageScroller className="min-h-0 flex-1">
 					<MessageScrollerViewport aria-label="Conversation">