diff --git a/client/src/components/lanes/AddLaneModal.tsx b/client/src/components/lanes/AddLaneModal.tsx
index 4630cd8..8c0a594 100644
--- a/client/src/components/lanes/AddLaneModal.tsx
+++ b/client/src/components/lanes/AddLaneModal.tsx
@@ -41,6 +41,11 @@ export function AddLaneModal({
   const [branchesError, setBranchesError] = useState<string | null>(null);
   const [busy, setBusy] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [setupResult, setSetupResult] = useState<{
+    profile: "scaffolded" | "skipped" | "failed";
+    agents: "ok" | "failed";
+    mcp: "ok" | "failed";
+  } | null>(null);
 
   const reset = () => {
     setSourceRepo("");
@@ -50,6 +55,7 @@ export function AddLaneModal({
     setBranchesError(null);
     setError(null);
     setBusy(false);
+    setSetupResult(null);
   };
 
   // Look up the repo's branches once the path settles - debounced so every
@@ -96,6 +102,32 @@ export function AddLaneModal({
         title: name,
         base: base || undefined,
       });
+
+      const [profileOutcome, agentsOutcome, mcpOutcome] = await Promise.allSettled([
+        api.lanes.profileInit(result.lane.id),
+        api.lanes.agentsInstall(result.lane.id),
+        api.lanes.mcpSync(result.lane.id),
+      ]);
+      setSetupResult({
+        profile:
+          profileOutcome.status === "fulfilled"
+            ? profileOutcome.value.scaffolded
+              ? "scaffolded"
+              : "skipped"
+            : "failed",
+        agents: agentsOutcome.status === "fulfilled" ? "ok" : "failed",
+        mcp: mcpOutcome.status === "fulfilled" ? "ok" : "failed",
+      });
+
+      if (import.meta.env.DEV) {
+        console.info("[add-lane] auto-setup result:", {
+          profile:
+            profileOutcome.status === "fulfilled" ? profileOutcome.value : profileOutcome.reason,
+          agents: agentsOutcome.status === "fulfilled" ? agentsOutcome.value : agentsOutcome.reason,
+          mcp: mcpOutcome.status === "fulfilled" ? mcpOutcome.value : mcpOutcome.reason,
+        });
+      }
+
       reset();
       onAdded(result.lane);
       onClose();
diff --git a/client/src/components/lanes/__tests__/AddLaneModal.test.tsx b/client/src/components/lanes/__tests__/AddLaneModal.test.tsx
index a03ece4..27c8897 100644
--- a/client/src/components/lanes/__tests__/AddLaneModal.test.tsx
+++ b/client/src/components/lanes/__tests__/AddLaneModal.test.tsx
@@ -18,7 +18,15 @@ import type { CwdSuggestion } from "../../../lib/api";
 import type { Lane } from "../../../lib/types";
 
 vi.mock("../../../lib/api", () => ({
-  api: { lanes: { branches: vi.fn(), worktree: vi.fn() } },
+  api: {
+    lanes: {
+      branches: vi.fn(),
+      worktree: vi.fn(),
+      profileInit: vi.fn(),
+      agentsInstall: vi.fn(),
+      mcpSync: vi.fn(),
+    },
+  },
 }));
 
 function laneFixture(over: Partial<Lane> = {}): Lane {
@@ -76,6 +84,12 @@ async function focusField(user: ReturnType<typeof userEvent.setup>, el: HTMLElem
 beforeEach(() => {
   vi.mocked(api.lanes.branches).mockReset();
   vi.mocked(api.lanes.worktree).mockReset();
+  vi.mocked(api.lanes.profileInit).mockResolvedValue({
+    scaffolded: false,
+    reason: "no detectable Node.js project",
+  });
+  vi.mocked(api.lanes.agentsInstall).mockResolvedValue({ installed: [] });
+  vi.mocked(api.lanes.mcpSync).mockResolvedValue({ servers: [], profilesSeeded: [] });
 });
 
 describe("AddLaneModal", () => {
@@ -169,4 +183,51 @@ describe("AddLaneModal", () => {
     renderModal({ open: false });
     expect(screen.queryByRole("dialog")).toBeNull();
   });
+
+  it("fires profileInit, agentsInstall, and mcpSync after a successful worktree call", async () => {
+    vi.mocked(api.lanes.branches).mockResolvedValue({ branches: ["main"], current: "main" });
+    vi.mocked(api.lanes.worktree).mockResolvedValue({
+      lane: { id: 42, title: "demo", cwd: "/lanes/demo", status: "provisioning" } as Lane,
+    });
+    const onAdded = vi.fn();
+    renderModal({ onAdded });
+    const user = userEvent.setup();
+
+    const repoField = screen.getByLabelText("Source repository");
+    await focusField(user, repoField);
+    await user.type(repoField, "/Users/tester/projects/repo");
+    await screen.findByLabelText("Branch to fork from");
+    await user.type(screen.getByLabelText("Title"), "demo");
+    await user.click(screen.getByRole("button", { name: "Add lane" }));
+
+    await waitFor(() => expect(api.lanes.worktree).toHaveBeenCalled());
+    await waitFor(() => expect(api.lanes.profileInit).toHaveBeenCalledWith(42));
+    expect(api.lanes.agentsInstall).toHaveBeenCalledWith(42);
+    expect(api.lanes.mcpSync).toHaveBeenCalledWith(42);
+    await waitFor(() => expect(onAdded).toHaveBeenCalled());
+  });
+
+  it("still calls onAdded and closes even when every setup call fails", async () => {
+    vi.mocked(api.lanes.branches).mockResolvedValue({ branches: ["main"], current: "main" });
+    vi.mocked(api.lanes.worktree).mockResolvedValue({
+      lane: { id: 43, title: "demo2", cwd: "/lanes/demo2", status: "provisioning" } as Lane,
+    });
+    vi.mocked(api.lanes.profileInit).mockRejectedValue(new Error("boom"));
+    vi.mocked(api.lanes.agentsInstall).mockRejectedValue(new Error("boom"));
+    vi.mocked(api.lanes.mcpSync).mockRejectedValue(new Error("boom"));
+    const onAdded = vi.fn();
+    const onClose = vi.fn();
+    renderModal({ onAdded, onClose });
+    const user = userEvent.setup();
+
+    const repoField = screen.getByLabelText("Source repository");
+    await focusField(user, repoField);
+    await user.type(repoField, "/Users/tester/projects/repo");
+    await screen.findByLabelText("Branch to fork from");
+    await user.type(screen.getByLabelText("Title"), "demo2");
+    await user.click(screen.getByRole("button", { name: "Add lane" }));
+
+    await waitFor(() => expect(onAdded).toHaveBeenCalled());
+    expect(onClose).toHaveBeenCalled();
+  });
 });
diff --git a/client/src/lib/api.ts b/client/src/lib/api.ts
index 576c220..9507698 100644
--- a/client/src/lib/api.ts
+++ b/client/src/lib/api.ts
@@ -2080,6 +2080,11 @@ export const api = {
         method: "POST",
         body: "{}",
       }),
+    profileInit: (id: number, force = false) =>
+      request<{ scaffolded: boolean; written?: string[]; todos?: string[]; reason?: string }>(
+        `/lanes/${id}/profile/init`,
+        { method: "POST", body: JSON.stringify({ force }) }
+      ),
     integration: (id: number, name: string) =>
       request<{ enabled: boolean }>(`/lanes/${id}/integrations/${encodeURIComponent(name)}`),
     syncBaseCheck: (id: number, branch?: string) =>