diff --git a/src/agent/fleet-verbs-mount.test.ts b/src/agent/fleet-verbs-mount.test.ts
new file mode 100644
index 000000000..ac53419b7
--- /dev/null
+++ b/src/agent/fleet-verbs-mount.test.ts
@@ -0,0 +1,75 @@
+/**
+ * Primary createAgentToolset mounts the six fleet verbs beside task /
+ * search_agents / read_agent_trace when subAgent (with the shared TUI
+ * sessions store) is wired. Leaves / no-subAgent toolsets stay without them.
+ */
+import { mkdtempSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, test } from "bun:test";
+
+import { createSubAgentSessionStore } from "../subagent/session-store.js";
+
+const FLEET_VERBS = [
+  "spawn_agent",
+  "wait_agents",
+  "close_agent",
+  "resume_agent",
+  "interrupt_agent",
+  "followup_task",
+] as const;
+
+describe("primary fleet verb mount", () => {
+  test("createAgentToolset registers the six fleet verbs when subAgent + sessions are set", async () => {
+    const cwd = mkdtempSync(join(tmpdir(), "corbits-fleet-mount-"));
+    const { createAgentToolset } = await import("./tools.js");
+    const permissionGate = {
+      check: async () => ({ allowed: true }),
+      getSkipPermissions: () => false,
+    } as never;
+    const sessions = createSubAgentSessionStore();
+
+    const toolset = await createAgentToolset({
+      cwd,
+      permissionGate,
+      onOperatorGate: async () => ({ kind: "option", index: 0 }),
+      subAgent: {
+        provider: {
+          providerName: "test",
+          baseURL: "http://127.0.0.1:0",
+          model: "test-model",
+        },
+        getWorkdirBase: () => cwd,
+        sessions,
+      },
+    });
+    const names = toolset.dynamicRunner.currentDefinitions().map((d) => d.name);
+    expect(names).toContain("task");
+    expect(names).toContain("read_agent_trace");
+    for (const name of FLEET_VERBS) {
+      expect(names).toContain(name);
+    }
+    await toolset.dispose();
+  });
+
+  test("createAgentToolset omits fleet verbs when subAgent is not set", async () => {
+    const cwd = mkdtempSync(join(tmpdir(), "corbits-fleet-mount-"));
+    const { createAgentToolset } = await import("./tools.js");
+    const permissionGate = {
+      check: async () => ({ allowed: true }),
+      getSkipPermissions: () => false,
+    } as never;
+
+    const toolset = await createAgentToolset({
+      cwd,
+      permissionGate,
+      onOperatorGate: async () => ({ kind: "option", index: 0 }),
+    });
+    const names = toolset.dynamicRunner.currentDefinitions().map((d) => d.name);
+    expect(names).not.toContain("task");
+    for (const name of FLEET_VERBS) {
+      expect(names).not.toContain(name);
+    }
+    await toolset.dispose();
+  });
+});
diff --git a/src/agent/tool-search.test.ts b/src/agent/tool-search.test.ts
index 3368ed6c3..f70662fb2 100644
--- a/src/agent/tool-search.test.ts
+++ b/src/agent/tool-search.test.ts
@@ -83,6 +83,21 @@ describe("createToolIndex", () => {
     );
   });
 
+  test("orchestrator mode advertises the six fleet verbs", () => {
+    const advertised = advertisedToolNamesForSessionMode("orchestrator", FULL_AVAILABILITY);
+    for (const name of [
+      "spawn_agent",
+      "wait_agents",
+      "close_agent",
+      "resume_agent",
+      "interrupt_agent",
+      "followup_task",
+    ] as const) {
+      expect(CORE_TOOL_NAMES).toContain(name);
+      expect(advertised).toContain(name);
+    }
+  });
+
   test("manage_tasks is advertised regardless of availability", () => {
     expect(coreToolNamesForSessionMode("orchestrator", NO_AVAILABILITY)).toContain("manage_tasks");
   });
@@ -219,6 +234,16 @@ describe("advertisedTools", () => {
     const prefix = advertisedToolNamesForSessionMode("orchestrator", FULL_AVAILABILITY);
     expect(prefix).toContain("task");
     expect(prefix).toContain("search_agents");
+    for (const name of [
+      "spawn_agent",
+      "wait_agents",
+      "close_agent",
+      "resume_agent",
+      "interrupt_agent",
+      "followup_task",
+    ] as const) {
+      expect(prefix).toContain(name);
+    }
     // advertisedTools only emits tools present in the registry; multi-agent
     // tools appear on the wire when createAgentToolset registers them.
     const names = advertisedTools(registry, [], prefix).map((d) => d.name);
diff --git a/src/agent/tool-search.ts b/src/agent/tool-search.ts
index eda40ea59..4d58ca801 100644
--- a/src/agent/tool-search.ts
+++ b/src/agent/tool-search.ts
@@ -39,9 +39,28 @@ export const CORE_TOOL_NAMES: readonly string[] = [
   // round-trip. Catalog-only placement left the model discovering profiles then
   // failing on an unloaded task tool.
   "task",
+  // Fleet verbs (non-blocking spawn + lifecycle). Mounted on primary when
+  // subAgent is wired; advertised here so the model does not tool_search for
+  // them. Package allowlists (ORCHESTRATOR_TOOLS / SKYWALKER_TOOLS) are a
+  // separate, deferred change.
+  "spawn_agent",
+  "wait_agents",
+  "close_agent",
+  "resume_agent",
+  "interrupt_agent",
+  "followup_task",
 ];
 
-const ORCHESTRATOR_ONLY_TOOL_NAMES: readonly string[] = ["search_agents", "task"];
+const ORCHESTRATOR_ONLY_TOOL_NAMES: readonly string[] = [
+  "search_agents",
+  "task",
+  "spawn_agent",
+  "wait_agents",
+  "close_agent",
+  "resume_agent",
+  "interrupt_agent",
+  "followup_task",
+];
 
 // Session-start facts that gate a core tool's advertisement. Each must be
 // knowable once, before the first inference call, and must never change for
diff --git a/src/agent/tools.ts b/src/agent/tools.ts
index cf6fcf5ab..23a46b14b 100644
--- a/src/agent/tools.ts
+++ b/src/agent/tools.ts
@@ -39,6 +39,17 @@ import {
   type SubAgentProvider,
   type SubAgentSessionStore,
 } from "../subagent/index.js";
+import {
+  createFleetRecords,
+  createSpawnAgentTool,
+  createWaitAgentsTool,
+} from "../subagent/agent-fleet.js";
+import {
+  createCloseAgentTool,
+  createResumeAgentTool,
+  createInterruptAgentTool,
+  createFollowupTaskTool,
+} from "../subagent/lifecycle-tools.js";
 import { parseManageTasksArgs } from "./tasks.js";
 import { createListDirTool } from "../util/list-dir.js";
 import { createWebFetchTool } from "../tools/web-fetch.js";
@@ -263,6 +274,84 @@ export async function createAgentToolset(args: AgentToolsetArgs): Promise<AgentT
 
   // Align the advertised run_shell timeout with shell-guard (no built-in default;
   // advertise settings.shell.timeoutMs when set).
+  // Orchestrator tools (task / search / trace / fleet) are assembled once so the
+  // fleet verbs can reuse the same sessions store the task tool already holds —
+  // never a private mailbox allocated only for spawn_agent/wait_agents.
+  const orchestratorTools: AgentTool[] = [];
+  if (subAgentsEnabled && args.subAgent !== undefined) {
+    const sa = args.subAgent;
+    orchestratorTools.push(
+      createTaskTool({
+        cwd,
+        getWorkdirBase: sa.getWorkdirBase,
+        provider: sa.provider,
+        permissionGate,
+        inheritMcpTools: () => inheritedMcpTools,
+        run: runSubAgent,
+        ...(shellTimeout !== undefined ? { shellTimeout } : {}),
+        ...(shellEnv !== undefined ? { shellEnv } : {}),
+        ...(extraToolPlugins.length > 0 ? { extraToolPlugins } : {}),
+        ...(sa.onEvent !== undefined ? { onEvent: sa.onEvent } : {}),
+        ...(sa.onProgress !== undefined ? { onProgress: sa.onProgress } : {}),
+        ...(sa.sessions !== undefined ? { sessions: sa.sessions } : {}),
+        ...(sa.settings !== undefined ? { settings: sa.settings } : {}),
+        ...(sa.catalog !== undefined ? { catalog: sa.catalog } : {}),
+        ...(sa.profiles !== undefined ? { profiles: sa.profiles } : {}),
+        ...(args.getBlobReader !== undefined ? { getBlobReader: args.getBlobReader } : {}),
+        ...(sa.useWorktree !== undefined ? { useWorktree: sa.useWorktree } : {}),
+        ...(args.telemetry !== undefined ? { telemetry: args.telemetry } : {}),
+      }),
+    );
+    if (sa.profiles !== undefined) {
+      orchestratorTools.push(
+        createSearchAgentsTool(() => {
+          const profiles = sa.profiles;
+          return typeof profiles === "function" ? profiles() : (profiles ?? []);
+        }),
+      );
+    }
+    // Tier 1: the primary session is always an orchestrator and may
+    // target any worker (assertCanTargetAgent's rule), so no authority
+    // context is passed here — omitting it is treated as unrestricted,
+    // matching Tier 1's actual authority.
+    orchestratorTools.push(createReadAgentTraceTool(sa.getWorkdirBase));
+
+    // Mirror nested runSubAgent's orchestrator fleet mount (run.ts), but
+    // reuse the existing TUI/exec session store — do not allocate a private
+    // store only for these verbs. spawnAllowlist stays unwired on primary.
+    if (sa.sessions !== undefined) {
+      const fleetSessions = sa.sessions;
+      const fleetRecords = createFleetRecords();
+      const fleetDeps = {
+        permissionGate,
+        inheritMcpTools: () => inheritedMcpTools,
+        ...(shellTimeout !== undefined ? { shellTimeout } : {}),
+        ...(shellEnv !== undefined ? { shellEnv } : {}),
+        ...(extraToolPlugins.length > 0 ? { extraToolPlugins } : {}),
+        cwd,
+        getWorkdirBase: sa.getWorkdirBase,
+        provider: sa.provider,
+        ...(args.getBlobReader !== undefined ? { getBlobReader: args.getBlobReader } : {}),
+        run: runSubAgent,
+        sessions: fleetSessions,
+        fleetRecords,
+        ...(sa.onEvent !== undefined ? { onEvent: sa.onEvent } : {}),
+        ...(sa.onProgress !== undefined ? { onProgress: sa.onProgress } : {}),
+        ...(sa.settings !== undefined ? { settings: sa.settings } : {}),
+        ...(sa.catalog !== undefined ? { catalog: sa.catalog } : {}),
+        ...(args.telemetry !== undefined ? { telemetry: args.telemetry } : {}),
+      };
+      orchestratorTools.push(
+        createSpawnAgentTool(fleetDeps),
+        createWaitAgentsTool({ sessions: fleetSessions, fleetRecords }),
+        createCloseAgentTool({ sessions: fleetSessions }),
+        createResumeAgentTool({ sessions: fleetSessions }),
+        createInterruptAgentTool({ sessions: fleetSessions }),
+        createFollowupTaskTool({ sessions: fleetSessions }),
+      );
+    }
+  }
+
   const baseTools: AgentTool[] = [
     ...fromToolRunner(posixTools).map((tool) => ({
       ...tool,
@@ -276,47 +365,7 @@ export async function createAgentToolset(args: AgentToolsetArgs): Promise<AgentT
     createUseSkillTool(cwd, skillDirs, args.telemetry),
     createWebFetchTool(),
     createWebSearchTool(),
-    ...(subAgentsEnabled && args.subAgent !== undefined
-      ? [
-          createTaskTool({
-            cwd,
-            getWorkdirBase: args.subAgent.getWorkdirBase,
-            provider: args.subAgent.provider,
-            permissionGate,
-            inheritMcpTools: () => inheritedMcpTools,
-            run: runSubAgent,
-            ...(shellTimeout !== undefined ? { shellTimeout } : {}),
-            ...(shellEnv !== undefined ? { shellEnv } : {}),
-            ...(extraToolPlugins.length > 0 ? { extraToolPlugins } : {}),
-            ...(args.subAgent.onEvent !== undefined ? { onEvent: args.subAgent.onEvent } : {}),
-            ...(args.subAgent.onProgress !== undefined
-              ? { onProgress: args.subAgent.onProgress }
-              : {}),
-            ...(args.subAgent.sessions !== undefined ? { sessions: args.subAgent.sessions } : {}),
-            ...(args.subAgent.settings !== undefined ? { settings: args.subAgent.settings } : {}),
-            ...(args.subAgent.catalog !== undefined ? { catalog: args.subAgent.catalog } : {}),
-            ...(args.subAgent.profiles !== undefined ? { profiles: args.subAgent.profiles } : {}),
-            ...(args.getBlobReader !== undefined ? { getBlobReader: args.getBlobReader } : {}),
-            ...(args.subAgent.useWorktree !== undefined
-              ? { useWorktree: args.subAgent.useWorktree }
-              : {}),
-            ...(args.telemetry !== undefined ? { telemetry: args.telemetry } : {}),
-          }),
-          ...(args.subAgent.profiles !== undefined
-            ? [
-                createSearchAgentsTool(() => {
-                  const profiles = args.subAgent!.profiles;
-                  return typeof profiles === "function" ? profiles() : (profiles ?? []);
-                }),
-              ]
-            : []),
-          // Tier 1: the primary session is always an orchestrator and may
-          // target any worker (assertCanTargetAgent's rule), so no authority
-          // context is passed here — omitting it is treated as unrestricted,
-          // matching Tier 1's actual authority.
-          createReadAgentTraceTool(args.subAgent.getWorkdirBase),
-        ]
-      : []),
+    ...orchestratorTools,
     stringTool({
       definition: manageTasksDefinition,
       handler: async (rawArgs: Record<string, unknown>): Promise<string> => {