diff --git a/packages/app/src/screens/workspace/workspace-screen.tsx b/packages/app/src/screens/workspace/workspace-screen.tsx
index 161fffb9a..d5c84e4eb 100644
--- a/packages/app/src/screens/workspace/workspace-screen.tsx
+++ b/packages/app/src/screens/workspace/workspace-screen.tsx
@@ -876,6 +876,7 @@ function WorkspaceScreenContent({ serverId, workspaceId }: WorkspaceScreenProps)
   const convertWorkspaceDraftToAgent = useWorkspaceLayoutStore((state) => state.convertDraftToAgent);
   const reconcileWorkspaceTabs = useWorkspaceLayoutStore((state) => state.reconcileTabs);
   const unpinWorkspaceAgent = useWorkspaceLayoutStore((state) => state.unpinAgent);
+  const hideWorkspaceAgent = useWorkspaceLayoutStore((state) => state.hideAgent);
   const splitWorkspacePane = useWorkspaceLayoutStore((state) => state.splitPane);
   const splitWorkspacePaneEmpty = useWorkspaceLayoutStore((state) => state.splitPaneEmpty);
   const moveWorkspaceTabToPane = useWorkspaceLayoutStore((state) => state.moveTabToPane);
@@ -897,10 +898,11 @@ function WorkspaceScreenContent({ serverId, workspaceId }: WorkspaceScreenProps)
 
       if (input.target?.kind === "agent") {
         unpinWorkspaceAgent(persistenceKey, input.target.agentId);
+        hideWorkspaceAgent(persistenceKey, input.target.agentId);
       }
       closeWorkspaceTab(persistenceKey, normalizedTabId);
     },
-    [closeWorkspaceTab, persistenceKey, unpinWorkspaceAgent],
+    [closeWorkspaceTab, hideWorkspaceAgent, persistenceKey, unpinWorkspaceAgent],
   );
 
   const focusedPaneTabState = useMemo(
diff --git a/packages/app/src/stores/workspace-layout-actions.ts b/packages/app/src/stores/workspace-layout-actions.ts
index bcf170103..6bb7b8673 100644
--- a/packages/app/src/stores/workspace-layout-actions.ts
+++ b/packages/app/src/stores/workspace-layout-actions.ts
@@ -196,6 +196,7 @@ interface ReorderPaneTabsInLayoutInput {
 export interface WorkspaceTabReconcileState {
   layout: WorkspaceLayout;
   pinnedAgentIds?: ReadonlySet<string> | null;
+  hiddenAgentIds?: ReadonlySet<string> | null;
 }
 
 export interface WorkspaceTabSnapshot {
@@ -1429,6 +1430,7 @@ export function reconcileWorkspaceTabs(
     findPaneById(nextLayout.root, nextLayout.focusedPaneId)?.focusedTabId ?? null;
   let reconciledFocusedTabId = originalFocusedTabId;
   const pinnedAgentIds = new Set(state.pinnedAgentIds ?? []);
+  const hiddenAgentIds = new Set(state.hiddenAgentIds ?? []);
   const activeAgentIds = normalizeStringSet(snapshot.activeAgentIds);
   const knownAgentIds = normalizeStringSet(snapshot.knownAgentIds);
   const standaloneTerminalIds = normalizeStringSet(snapshot.standaloneTerminalIds);
@@ -1438,6 +1440,9 @@ export function reconcileWorkspaceTabs(
       visibleAgentIds.add(agentId);
     }
   }
+  for (const agentId of hiddenAgentIds) {
+    visibleAgentIds.delete(agentId);
+  }
 
   const initialTabs = collectAllTabs(nextLayout.root);
   const representedAgentIds = new Set(initialTabs.filter(isAgentTab).map((tab) => tab.target.agentId));
diff --git a/packages/app/src/stores/workspace-layout-store.test.ts b/packages/app/src/stores/workspace-layout-store.test.ts
index c83d317fc..64155aeda 100644
--- a/packages/app/src/stores/workspace-layout-store.test.ts
+++ b/packages/app/src/stores/workspace-layout-store.test.ts
@@ -224,6 +224,7 @@ describe("workspace-layout-store actions", () => {
       layoutByWorkspace: {},
       splitSizesByWorkspace: {},
       pinnedAgentIdsByWorkspace: {},
+      hiddenAgentIdsByWorkspace: {},
     });
     vi.restoreAllMocks();
   });
@@ -837,6 +838,42 @@ describe("workspace-layout-store actions", () => {
     });
   });
 
+  it("keeps hidden agent intents in memory per workspace without persisting them", () => {
+    const workspaceKey = createWorkspaceKey();
+    const otherWorkspaceKey = buildWorkspaceTabPersistenceKey({
+      serverId: SERVER_ID,
+      workspaceId: "/repo/other-worktree",
+    });
+
+    expect(otherWorkspaceKey).toBeTruthy();
+
+    const store = useWorkspaceLayoutStore.getState();
+    store.hideAgent(workspaceKey, "agent-1");
+    store.hideAgent(workspaceKey, "agent-1");
+    store.hideAgent(otherWorkspaceKey as string, "agent-2");
+
+    let state = useWorkspaceLayoutStore.getState();
+    expect(Array.from(state.hiddenAgentIdsByWorkspace[workspaceKey] ?? [])).toEqual(["agent-1"]);
+    expect(Array.from(state.hiddenAgentIdsByWorkspace[otherWorkspaceKey as string] ?? [])).toEqual([
+      "agent-2",
+    ]);
+
+    store.unhideAgent(workspaceKey, "agent-1");
+
+    state = useWorkspaceLayoutStore.getState();
+    expect(state.hiddenAgentIdsByWorkspace[workspaceKey]).toBeUndefined();
+    expect(Array.from(state.hiddenAgentIdsByWorkspace[otherWorkspaceKey as string] ?? [])).toEqual([
+      "agent-2",
+    ]);
+
+    const partialize = useWorkspaceLayoutStore.persist.getOptions().partialize;
+    expect(partialize).toBeTypeOf("function");
+    expect(partialize?.(state)).toEqual({
+      layoutByWorkspace: {},
+      splitSizesByWorkspace: {},
+    });
+  });
+
   it("convertDraftToAgent removes the draft and focuses the existing canonical agent tab", () => {
     vi.spyOn(globalThis.crypto, "randomUUID").mockReturnValue(
       "67676767-6767-6767-6767-676767676767",
@@ -934,4 +971,38 @@ describe("workspace-layout-store actions", () => {
     expect(layout.focusedPaneId).toBe("main");
     expect(findPaneById(layout.root, "main")?.focusedTabId).toBe("agent_agent-1");
   });
+
+  it("reconcileTabs does not re-add locally hidden agent tabs", () => {
+    const workspaceKey = createWorkspaceKey();
+
+    useWorkspaceLayoutStore.setState((state) => ({
+      ...state,
+      hiddenAgentIdsByWorkspace: {
+        [workspaceKey]: new Set<string>(["agent-1"]),
+      },
+    }));
+
+    useWorkspaceLayoutStore.getState().reconcileTabs(workspaceKey, {
+      agentsHydrated: true,
+      terminalsHydrated: true,
+      activeAgentIds: ["agent-1"],
+      knownAgentIds: ["agent-1"],
+      standaloneTerminalIds: [],
+      hasActivePendingDraftCreate: false,
+    });
+
+    expect(useWorkspaceLayoutStore.getState().getWorkspaceTabs(workspaceKey)).toEqual([]);
+  });
+
+  it("explicitly opening an agent tab clears hidden intent", () => {
+    const workspaceKey = createWorkspaceKey();
+    const store = useWorkspaceLayoutStore.getState();
+
+    store.hideAgent(workspaceKey, "agent-1");
+    store.openTab(workspaceKey, { kind: "agent", agentId: "agent-1" });
+
+    const state = useWorkspaceLayoutStore.getState();
+    expect(state.hiddenAgentIdsByWorkspace[workspaceKey]).toBeUndefined();
+    expect(state.getWorkspaceTabs(workspaceKey).map((tab) => tab.tabId)).toEqual(["agent_agent-1"]);
+  });
 });
diff --git a/packages/app/src/stores/workspace-layout-store.ts b/packages/app/src/stores/workspace-layout-store.ts
index 116bef8fb..3f39b174e 100644
--- a/packages/app/src/stores/workspace-layout-store.ts
+++ b/packages/app/src/stores/workspace-layout-store.ts
@@ -65,6 +65,7 @@ interface WorkspaceLayoutStore {
   layoutByWorkspace: Record<string, WorkspaceLayout>;
   splitSizesByWorkspace: Record<string, Record<string, number[]>>;
   pinnedAgentIdsByWorkspace: Record<string, Set<string>>;
+  hiddenAgentIdsByWorkspace: Record<string, Set<string>>;
   openTab: (workspaceKey: string, target: WorkspaceTabTarget) => string | null;
   closeTab: (workspaceKey: string, tabId: string) => void;
   focusTab: (workspaceKey: string, tabId: string) => void;
@@ -94,6 +95,8 @@ interface WorkspaceLayoutStore {
   reorderTabsInPane: (workspaceKey: string, paneId: string, tabIds: string[]) => void;
   pinAgent: (workspaceKey: string, agentId: string) => void;
   unpinAgent: (workspaceKey: string, agentId: string) => void;
+  hideAgent: (workspaceKey: string, agentId: string) => void;
+  unhideAgent: (workspaceKey: string, agentId: string) => void;
 }
 
 const MAX_TREE_DEPTH = 4;
@@ -106,6 +109,48 @@ function trimNonEmpty(value: string | null | undefined): string | null {
   return trimmed.length > 0 ? trimmed : null;
 }
 
+function addAgentIdToWorkspaceSet(
+  state: Record<string, Set<string>>,
+  workspaceKey: string,
+  agentId: string,
+): Record<string, Set<string>> {
+  const currentAgentIds = state[workspaceKey] ?? null;
+  if (currentAgentIds?.has(agentId)) {
+    return state;
+  }
+
+  const nextAgentIds = new Set(currentAgentIds ?? []);
+  nextAgentIds.add(agentId);
+  return {
+    ...state,
+    [workspaceKey]: nextAgentIds,
+  };
+}
+
+function removeAgentIdFromWorkspaceSet(
+  state: Record<string, Set<string>>,
+  workspaceKey: string,
+  agentId: string,
+): Record<string, Set<string>> {
+  const currentAgentIds = state[workspaceKey] ?? null;
+  if (!currentAgentIds?.has(agentId)) {
+    return state;
+  }
+
+  if (currentAgentIds.size === 1) {
+    const nextState = { ...state };
+    delete nextState[workspaceKey];
+    return nextState;
+  }
+
+  const nextAgentIds = new Set(currentAgentIds);
+  nextAgentIds.delete(agentId);
+  return {
+    ...state,
+    [workspaceKey]: nextAgentIds,
+  };
+}
+
 function getWorkspaceLayout(
   state: Record<string, WorkspaceLayout>,
   workspaceKey: string,
@@ -119,6 +164,7 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
       layoutByWorkspace: {},
       splitSizesByWorkspace: {},
       pinnedAgentIdsByWorkspace: {},
+      hiddenAgentIdsByWorkspace: {},
       openTab: (workspaceKey, target) => {
         const normalizedWorkspaceKey = trimNonEmpty(workspaceKey);
         const normalizedTarget = normalizeWorkspaceTabTarget(target);
@@ -133,6 +179,14 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
         });
 
         set((state) => ({
+          hiddenAgentIdsByWorkspace:
+            normalizedTarget.kind !== "agent"
+              ? state.hiddenAgentIdsByWorkspace
+              : removeAgentIdFromWorkspaceSet(
+                  state.hiddenAgentIdsByWorkspace,
+                  normalizedWorkspaceKey,
+                  normalizedTarget.agentId,
+                ),
           layoutByWorkspace: {
             ...state.layoutByWorkspace,
             [normalizedWorkspaceKey]: result.layout,
@@ -207,6 +261,14 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
         }
 
         set((state) => ({
+          hiddenAgentIdsByWorkspace:
+            normalizedTarget.kind !== "agent"
+              ? state.hiddenAgentIdsByWorkspace
+              : removeAgentIdFromWorkspaceSet(
+                  state.hiddenAgentIdsByWorkspace,
+                  normalizedWorkspaceKey,
+                  normalizedTarget.agentId,
+                ),
           layoutByWorkspace: {
             ...state.layoutByWorkspace,
             [normalizedWorkspaceKey]: result.layout,
@@ -233,6 +295,11 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
         }
 
         set((state) => ({
+          hiddenAgentIdsByWorkspace: removeAgentIdFromWorkspaceSet(
+            state.hiddenAgentIdsByWorkspace,
+            normalizedWorkspaceKey,
+            normalizedAgentId,
+          ),
           layoutByWorkspace: {
             ...state.layoutByWorkspace,
             [normalizedWorkspaceKey]: result.layout,
@@ -253,6 +320,7 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
             {
               layout: currentLayout,
               pinnedAgentIds: state.pinnedAgentIdsByWorkspace[normalizedWorkspaceKey] ?? null,
+              hiddenAgentIds: state.hiddenAgentIdsByWorkspace[normalizedWorkspaceKey] ?? null,
             },
             snapshot,
           );
@@ -478,6 +546,11 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
           nextPinnedAgentIds.add(normalizedAgentId);
 
           return {
+            hiddenAgentIdsByWorkspace: removeAgentIdFromWorkspaceSet(
+              state.hiddenAgentIdsByWorkspace,
+              normalizedWorkspaceKey,
+              normalizedAgentId,
+            ),
             pinnedAgentIdsByWorkspace: {
               ...state.pinnedAgentIdsByWorkspace,
               [normalizedWorkspaceKey]: nextPinnedAgentIds,
@@ -520,6 +593,50 @@ export const useWorkspaceLayoutStore = create<WorkspaceLayoutStore>()(
           };
         });
       },
+      hideAgent: (workspaceKey, agentId) => {
+        const normalizedWorkspaceKey = trimNonEmpty(workspaceKey);
+        const normalizedAgentId = trimNonEmpty(agentId);
+        if (!normalizedWorkspaceKey || !normalizedAgentId) {
+          return;
+        }
+
+        set((state) => {
+          const nextHiddenAgentIdsByWorkspace = addAgentIdToWorkspaceSet(
+            state.hiddenAgentIdsByWorkspace,
+            normalizedWorkspaceKey,
+            normalizedAgentId,
+          );
+          if (nextHiddenAgentIdsByWorkspace === state.hiddenAgentIdsByWorkspace) {
+            return state;
+          }
+
+          return {
+            hiddenAgentIdsByWorkspace: nextHiddenAgentIdsByWorkspace,
+          };
+        });
+      },
+      unhideAgent: (workspaceKey, agentId) => {
+        const normalizedWorkspaceKey = trimNonEmpty(workspaceKey);
+        const normalizedAgentId = trimNonEmpty(agentId);
+        if (!normalizedWorkspaceKey || !normalizedAgentId) {
+          return;
+        }
+
+        set((state) => {
+          const nextHiddenAgentIdsByWorkspace = removeAgentIdFromWorkspaceSet(
+            state.hiddenAgentIdsByWorkspace,
+            normalizedWorkspaceKey,
+            normalizedAgentId,
+          );
+          if (nextHiddenAgentIdsByWorkspace === state.hiddenAgentIdsByWorkspace) {
+            return state;
+          }
+
+          return {
+            hiddenAgentIdsByWorkspace: nextHiddenAgentIdsByWorkspace,
+          };
+        });
+      },
     }),
     {
       name: "workspace-layout-state",
diff --git a/packages/app/src/utils/workspace-navigation.test.ts b/packages/app/src/utils/workspace-navigation.test.ts
index 3ce623701..d170554c5 100644
--- a/packages/app/src/utils/workspace-navigation.test.ts
+++ b/packages/app/src/utils/workspace-navigation.test.ts
@@ -35,6 +35,7 @@ describe("prepareWorkspaceTab", () => {
       layoutByWorkspace: {},
       splitSizesByWorkspace: {},
       pinnedAgentIdsByWorkspace: {},
+      hiddenAgentIdsByWorkspace: {},
     });
   });