diff --git a/agent.js b/agent.js
new file mode 100644
index 0000000000..17fbdc32eb
--- /dev/null
+++ b/agent.js
@@ -0,0 +1,11 @@
+'use strict';
+
+const BaseHookClass = require('./lib/core/base_hook_class');
+
+class EggAgentHook extends BaseHookClass {
+  configDidLoad() {
+    this.agent._wrapMessenger();
+  }
+}
+
+module.exports = EggAgentHook;
diff --git a/index.d.ts b/index.d.ts
index 83dce6358a..fac192b06c 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -11,9 +11,9 @@ import { HttpClient2, RequestOptions } from 'urllib';
 import {
   EggCoreBase,
   FileLoaderOption,
-  EggLoader as CoreLoader, 
-  EggCoreOptions as CoreOptions, 
-  EggLoaderOptions as CoreLoaderOptions, 
+  EggLoader as CoreLoader,
+  EggCoreOptions as CoreOptions,
+  EggLoaderOptions as CoreLoaderOptions,
   BaseContextClass as CoreBaseContextClass,
 } from 'egg-core';
 import EggCookies = require('egg-cookies');
@@ -59,6 +59,32 @@ declare module 'egg' {
     protected logger: EggLogger;
   }
 
+  export class Boot {
+    /**
+     * logger
+     * @member {EggLogger}
+     */
+    protected logger: EggLogger;
+
+    /**
+     * The configuration of application
+     * @member {EggAppConfig}
+     */
+    protected config: EggAppConfig;
+
+    /**
+     * The instance of agent
+     * @member {Agent}
+     */
+    protected agent: Agent;
+
+    /**
+     * The instance of app
+     * @member {Application}
+     */
+    protected app: Application;
+  }
+
   export type RequestArrayBody = any[];
   export type RequestObjectBody = PlainObject;
   export interface Request extends KoaApplication.Request { // tslint:disable-line
@@ -636,7 +662,7 @@ declare module 'egg' {
 
     truncated: boolean;
   }
-                   
+
   interface GetFileStreamOptions {
     requireFile?: boolean; // required file submit, default is true
     defCharset?: string;
@@ -664,7 +690,7 @@ declare module 'egg' {
   * special properties (e.g: encrypted). So we must remove this property and
   * create our own with the same name.
   * @see https://github.com/eggjs/egg/pull/2958
-  * 
+  *
   * However, the latest version of Koa has "[key: string]: any" on the
   * context, and there'll be a type error for "keyof koa.Context".
   * So we have to directly inherit from "KoaApplication.BaseContext" and
diff --git a/index.js b/index.js
index b62b40aafa..f74cb54ebf 100644
--- a/index.js
+++ b/index.js
@@ -63,3 +63,8 @@ exports.Subscription = require('./lib/core/base_context_class');
  * @since 1.2.0
  */
 exports.BaseContextClass = require('./lib/core/base_context_class');
+
+/**
+ * @member {Boot} Egg#Boot
+ */
+exports.Boot = require('./lib/core/base_hook_class');
diff --git a/lib/agent.js b/lib/agent.js
index 5dbbb8d106..9003c1b38a 100644
--- a/lib/agent.js
+++ b/lib/agent.js
@@ -21,8 +21,6 @@ class Agent extends EggApplication {
     options.type = 'agent';
     super(options);
 
-    this._wrapMessenger();
-
     this.loader.load();
 
     // dump config after loaded, ensure all the dynamic modifications will be recorded
diff --git a/lib/core/base_hook_class.js b/lib/core/base_hook_class.js
new file mode 100644
index 0000000000..2bda13bf60
--- /dev/null
+++ b/lib/core/base_hook_class.js
@@ -0,0 +1,31 @@
+'use strict';
+
+const assert = require('assert');
+const INSTANCE = Symbol('BaseHookClass#instance');
+
+class BaseHookClass {
+
+  constructor(instance) {
+    this[INSTANCE] = instance;
+  }
+
+  get logger() {
+    return this[INSTANCE].logger;
+  }
+
+  get config() {
+    return this[INSTANCE].config;
+  }
+
+  get app() {
+    assert(this[INSTANCE].type === 'application', 'agent boot should not use app instance');
+    return this[INSTANCE];
+  }
+
+  get agent() {
+    assert(this[INSTANCE].type === 'agent', 'app boot should not use agent instance');
+    return this[INSTANCE];
+  }
+}
+
+module.exports = BaseHookClass;
diff --git a/lib/egg.js b/lib/egg.js
index b4421e4654..920c5f1496 100644
--- a/lib/egg.js
+++ b/lib/egg.js
@@ -18,6 +18,7 @@ const createLoggers = require('./core/logger');
 const Singleton = require('./core/singleton');
 const utils = require('./core/utils');
 const BaseContextClass = require('./core/base_context_class');
+const BaseHookClass = require('./core/base_hook_class');
 
 const HTTPCLIENT = Symbol('EggApplication#httpclient');
 const LOGGERS = Symbol('EggApplication#loggers');
@@ -133,7 +134,7 @@ class EggApplication extends EggCore {
 
     /**
      * Retreive base context class
-     * @member {Controller} BaseContextClass
+     * @member {BaseContextClass} BaseContextClass
      * @since 1.0.0
      */
     this.BaseContextClass = BaseContextClass;
@@ -158,6 +159,18 @@ class EggApplication extends EggCore {
      * @since 2.12.0
      */
     this.Subscription = BaseContextClass;
+
+    /**
+     * Retreive base context class
+     * @member {BaseHookClass} BaseHookClass
+     */
+    this.BaseHookClass = BaseHookClass;
+
+    /**
+     * Retreive base boot
+     * @member {Boot}
+     */
+    this.Boot = BaseHookClass;
   }
 
   /**
diff --git a/package.json b/package.json
index 3c7dacf8f1..31abd0d096 100644
--- a/package.json
+++ b/package.json
@@ -91,6 +91,7 @@
     "lib",
     "app",
     "config",
+    "agent.js",
     "index.d.ts"
   ],
   "scripts": {
diff --git a/test/agent.test.js b/test/agent.test.js
new file mode 100644
index 0000000000..5cd9a2ae01
--- /dev/null
+++ b/test/agent.test.js
@@ -0,0 +1,22 @@
+'use strict';
+
+const assert = require('assert');
+const mock = require('egg-mock');
+const path = require('path');
+const utils = require('./utils');
+
+describe('test/agent.test.js', () => {
+  afterEach(mock.restore);
+  let app;
+
+  before(() => {
+    app = utils.app('apps/agent-logger-config');
+    return app.ready();
+  });
+  after(() => app.close());
+
+  it('agent logger config should work', () => {
+    const fileTransport = app._agent.logger.get('file');
+    assert(fileTransport.options.file === path.join('/tmp/foo', 'egg-agent.log'));
+  });
+});
diff --git a/test/fixtures/apps/agent-logger-config/config/config.default.js b/test/fixtures/apps/agent-logger-config/config/config.default.js
new file mode 100644
index 0000000000..3935505932
--- /dev/null
+++ b/test/fixtures/apps/agent-logger-config/config/config.default.js
@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = {
+  logger: {
+    dir: '/tmp/foo',
+  },
+};
diff --git a/test/fixtures/apps/agent-logger-config/package.json b/test/fixtures/apps/agent-logger-config/package.json
new file mode 100644
index 0000000000..3c0c0670a1
--- /dev/null
+++ b/test/fixtures/apps/agent-logger-config/package.json
@@ -0,0 +1,3 @@
+{
+  "name": "agent-logger-config"
+}
diff --git a/test/fixtures/apps/boot-app/agent.js b/test/fixtures/apps/boot-app/agent.js
index 04ede16266..69c61c4738 100644
--- a/test/fixtures/apps/boot-app/agent.js
+++ b/test/fixtures/apps/boot-app/agent.js
@@ -1,39 +1,43 @@
 'use strict';
 
+const assert = require('assert');
 const sleep = require('mz-modules/sleep');
+const BaseHookClass = require('../../../../lib/core/base_hook_class');
 
-module.exports = class {
-  constructor(app) {
-    app.bootLog = [];
-    this.app = app;
+module.exports = class extends BaseHookClass {
+  constructor(agent) {
+    super(agent);
+    agent.bootLog = [];
+    assert(this.config);
   }
 
   configDidLoad() {
-    this.app.bootLog.push('configDidLoad');
+    this.agent.bootLog.push('configDidLoad');
   }
 
   async didLoad() {
     await sleep(1);
-    this.app.bootLog.push('didLoad');
+    this.agent.bootLog.push('didLoad');
   }
 
   async willReady() {
     await sleep(1);
-    this.app.bootLog.push('willReady');
+    this.agent.bootLog.push('willReady');
   }
 
   async didReady() {
     await sleep(1);
-    this.app.bootLog.push('didReady');
+    this.agent.bootLog.push('didReady');
+    this.logger.info('agent is ready');
   }
 
   async beforeClose() {
     await sleep(1);
-    this.app.bootLog.push('beforeClose');
+    this.agent.bootLog.push('beforeClose');
   }
 
   async serverDidReady() {
     await sleep(1);
-    this.app.bootLog.push('serverDidReady');
+    this.agent.bootLog.push('serverDidReady');
   }
 };
diff --git a/test/fixtures/apps/boot-app/app.js b/test/fixtures/apps/boot-app/app.js
index 04ede16266..fdd495a054 100644
--- a/test/fixtures/apps/boot-app/app.js
+++ b/test/fixtures/apps/boot-app/app.js
@@ -1,11 +1,14 @@
 'use strict';
 
+const assert = require('assert');
 const sleep = require('mz-modules/sleep');
+const BaseHookClass = require('../../../../lib/core/base_hook_class');
 
-module.exports = class {
+module.exports = class extends BaseHookClass {
   constructor(app) {
+    super(app);
     app.bootLog = [];
-    this.app = app;
+    assert(this.config);
   }
 
   configDidLoad() {
@@ -25,6 +28,7 @@ module.exports = class {
   async didReady() {
     await sleep(1);
     this.app.bootLog.push('didReady');
+    this.logger.info('app is ready');
   }
 
   async beforeClose() {
diff --git a/test/index.test.js b/test/index.test.js
index b18199c967..6b52ae6fee 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -11,6 +11,7 @@ describe('test/index.test.js', () => {
       'AppWorkerLoader',
       'Application',
       'BaseContextClass',
+      'Boot',
       'Controller',
       'Service',
       'Subscription',
diff --git a/test/lib/core/loader/load_boot.test.js b/test/lib/core/loader/load_boot.test.js
index f99ee87e9d..b1c3432f6c 100644
--- a/test/lib/core/loader/load_boot.test.js
+++ b/test/lib/core/loader/load_boot.test.js
@@ -12,7 +12,9 @@ describe('test/lib/core/loader/load_boot.test.js', () => {
   });
 
   it('should load app.js', async () => {
+    app.mockLog();
     await app.close();
+    app.expectLog('app is ready');
     assert.deepStrictEqual(app.bootLog, [ 'configDidLoad',
       'didLoad',
       'willReady',
diff --git a/test/lib/egg.test.js b/test/lib/egg.test.js
index efedb144f9..8e3523aae3 100644
--- a/test/lib/egg.test.js
+++ b/test/lib/egg.test.js
@@ -135,7 +135,7 @@ describe('test/lib/egg.test.js', () => {
 
     it('should read timing data', function* () {
       let json = readJson(path.join(baseDir, `run/agent_timing_${process.pid}.json`));
-      assert(json.length === 39);
+      assert(json.length === 40);
       assert(json[0].name === 'Application Start');
       assert(json[0].pid === process.pid);