diff --git a/README.md b/README.md
index 4dd503dc..cb0f0def 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ async function getMe() {
 2. Receive Mixin Messenger messages
 
 ```js
-const { MixinApi } = require('@mixin.dev/mixin-node-sdk');
+const { BlazeKeystoreClient } = require('@mixin.dev/mixin-node-sdk/blaze');
 
 const keystore = {
   app_id: '',
@@ -57,16 +57,13 @@ const keystore = {
   server_public_key: '',
   session_private_key: '',
 };
-const config = {
-  keystore,
-  blazeOptions: {
-    parse: true,
-    syncAck: true,
-  },
+const config = blazeOptions: {
+  parse: true,
+  syncAck: true,
 };
 
-const client = MixinApi(config);
-client.blaze.loop({
+const client = BlazeKeystoreClient(keystore, config);
+client.loop({
   onMessage(msg) {
     console.log(msg);
   },
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 51d6a886..f12c3a79 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -47,7 +47,7 @@ async function getMe() {
 2. 使用 Mixin 的消息功能
 
 ```js
-const { MixinApi } = require('@mixin.dev/mixin-node-sdk');
+const { BlazeKeystoreClient } = require('@mixin.dev/mixin-node-sdk/blaze');
 
 const keystore = {
   app_id: '',
@@ -55,16 +55,13 @@ const keystore = {
   server_public_key: '',
   session_private_key: '',
 };
-const config = {
-  keystore,
-  blazeOptions: {
-    parse: true,
-    syncAck: true,
-  },
+const config = blazeOptions: {
+  parse: true,
+  syncAck: true,
 };
 
-const client = MixinApi(config);
-client.blaze.loop({
+const client = BlazeKeystoreClient(keystore, config);
+client.loop({
   onMessage(msg) {
     console.log(msg);
   },
diff --git a/example/blaze.ts b/example/blaze.ts
index 6ff95d92..bafa86c0 100644
--- a/example/blaze.ts
+++ b/example/blaze.ts
@@ -1,12 +1,11 @@
 const { MixinApi } = require('..');
+const { BlazeKeystoreClient } = require('../dist/blaze');
 const keystore = require('../keystore.json'); // keystore from your bot
 
-const client = MixinApi({
-  keystore,
-  blazeOptions: {
-    parse: true, // parse the message content by sdk
-    syncAck: true, // automatically send read status after receiving message
-  },
+const client = MixinApi({ keystore });
+const blaze = BlazeKeystoreClient(keystore, {
+  parse: true, // parse the message content by sdk
+  syncAck: true, // automatically send read status after receiving message
 });
 
 const handler = {
@@ -41,4 +40,4 @@ const handler = {
   },
 };
 // ws will auto reconnect after connect closing
-client.blaze.loop(handler);
+blaze.loop(handler);
diff --git a/example/message.ts b/example/message.ts
index 47df8c21..b9b3b45f 100644
--- a/example/message.ts
+++ b/example/message.ts
@@ -7,8 +7,10 @@ const main = async () => {
 
   const client = MixinApi({ keystore });
 
+  const conv = await client.conversation.createContact('opponent-id');
+
   const resp = await client.message.sendLegacy({
-    conversation_id: '9451292c-c81c-4574-961a-ce9075e32400',
+    conversation_id: conv.conversation_id,
     message_id: v4(),
     category: 'PLAIN_TEXT',
     data_base64: base64RawURLEncode('hi'),
diff --git a/package-lock.json b/package-lock.json
index f124f938..71ad4eca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,6 @@
         "bs58": "^6.0.0",
         "int64-buffer": "^1.0.1",
         "is-retry-allowed": "^3.0.0",
-        "lodash.merge": "^4.6.2",
         "md5": "^2.3.0",
         "nano-seconds": "^1.2.2",
         "pako": "^2.0.4",
@@ -31,7 +30,6 @@
         "@size-limit/esbuild": "^12.0.1",
         "@size-limit/esbuild-why": "^12.0.1",
         "@size-limit/preset-small-lib": "^12.0.1",
-        "@types/lodash.merge": "^4.6.7",
         "@types/md5": "^2.3.5",
         "@types/node": "^25.5.0",
         "@types/node-forge": "^1.3.8",
@@ -2195,23 +2193,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/lodash": {
-      "version": "4.17.24",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.17.24.tgz",
-      "integrity": "sha512-gIW7lQLZbue7lRSWEFql49QJJWThrTFFeIMJdp3eH4tKoxm1OvEPg02rm4wCCSHS0cL3/Fizimb35b7k8atwsQ==",
-      "dev": true,
-      "license": "MIT"
-    },
-    "node_modules/@types/lodash.merge": {
-      "version": "4.6.9",
-      "resolved": "https://registry.npmjs.org/@types/lodash.merge/-/lodash.merge-4.6.9.tgz",
-      "integrity": "sha512-23sHDPmzd59kUgWyKGiOMO2Qb9YtqRO/x4IhkgNUiPQ1+5MUVqi6bCZeq9nBJ17msjIMbEIO5u+XW4Kz6aGUhQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@types/lodash": "*"
-      }
-    },
     "node_modules/@types/md5": {
       "version": "2.3.6",
       "resolved": "https://registry.npmjs.org/@types/md5/-/md5-2.3.6.tgz",
@@ -4637,12 +4618,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/lodash.merge": {
-      "version": "4.6.2",
-      "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
-      "integrity": "sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==",
-      "license": "MIT"
-    },
     "node_modules/magic-string": {
       "version": "0.30.21",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.21.tgz",
diff --git a/package.json b/package.json
index 7911426c..87be1fe4 100644
--- a/package.json
+++ b/package.json
@@ -5,10 +5,28 @@
   "description": "Mixin SDK for Node.js and Javascript",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/mixin-node-sdk.esm.mjs",
+      "require": "./dist/index.js",
+      "default": "./dist/index.js"
+    },
+    "./blaze": {
+      "types": "./dist/blaze/index.d.ts",
+      "import": "./dist/blaze/index.mjs",
+      "require": "./dist/blaze/index.js",
+      "default": "./dist/blaze/index.js"
+    },
+    "./package.json": "./package.json"
+  },
   "files": [
     "dist",
-    "src"
+    "README.md",
+    "README.zh-CN.md",
+    "LICENSE"
   ],
+  "sideEffects": false,
   "engines": {
     "node": ">=20"
   },
@@ -28,8 +46,8 @@
     "js"
   ],
   "scripts": {
-    "start": "bunchee --watch --runtime node --format cjs --output dist/index.js",
-    "build": "rm -rf dist && bunchee --runtime node --format cjs --output dist/index.js && bunchee --runtime browser --format esm --output dist/mixin-node-sdk.esm.js --no-clean && bunchee --runtime browser --format cjs --output dist/mixin-node-sdk.cjs.production.min.js --minify --no-clean --no-dts",
+    "start": "bunchee --watch",
+    "build": "rm -rf dist && bunchee",
     "build:umd": "bunchee --runtime browser --format umd --output dist/mixin-node-sdk.umd.js",
     "test": "vitest run",
     "test:watch": "vitest",
@@ -40,15 +58,15 @@
     "analyze": "size-limit --why"
   },
   "author": "contact@mixin.one",
-  "module": "dist/mixin-node-sdk.esm.js",
+  "module": "dist/mixin-node-sdk.esm.mjs",
   "size-limit": [
     {
-      "path": "dist/mixin-node-sdk.cjs.production.min.js",
-      "limit": "90 KB"
+      "path": "dist/index.js",
+      "limit": "80 KB"
     },
     {
-      "path": "dist/mixin-node-sdk.esm.js",
-      "limit": "75 KB"
+      "path": "dist/mixin-node-sdk.esm.mjs",
+      "limit": "65 KB"
     }
   ],
   "devDependencies": {
@@ -56,7 +74,6 @@
     "@size-limit/esbuild": "^12.0.1",
     "@size-limit/esbuild-why": "^12.0.1",
     "@size-limit/preset-small-lib": "^12.0.1",
-    "@types/lodash.merge": "^4.6.7",
     "@types/md5": "^2.3.5",
     "@types/node": "^25.5.0",
     "@types/node-forge": "^1.3.8",
@@ -73,7 +90,7 @@
     "jiti": "^2.6.1",
     "jsdom": "^28.1.0",
     "node-forge": "^1.3.1",
-    "prettier": "^3.3.3",
+    "prettier": "^3.8.1",
     "size-limit": "^12.0.1",
     "tslib": "^2.4.0",
     "typescript": "^5.9.3",
@@ -89,7 +106,6 @@
     "bs58": "^6.0.0",
     "int64-buffer": "^1.0.1",
     "is-retry-allowed": "^3.0.0",
-    "lodash.merge": "^4.6.2",
     "md5": "^2.3.0",
     "nano-seconds": "^1.2.2",
     "pako": "^2.0.4",
diff --git a/src/blaze/client.ts b/src/blaze/client.ts
index 4b9663a4..6a1535cc 100644
--- a/src/blaze/client.ts
+++ b/src/blaze/client.ts
@@ -57,7 +57,3 @@ export const BlazeKeystoreClient = (keystore: Keystore | undefined, wsOptions: B
     getWebSocket: () => ws,
   };
 };
-
-export const BlazeClient = (keystore: Keystore, wsOptions?: BlazeOptions) => ({ blaze: BlazeKeystoreClient(keystore, wsOptions) });
-
-export default BlazeClient;
diff --git a/src/blaze/type.ts b/src/blaze/type.ts
index 76697803..cd702edf 100644
--- a/src/blaze/type.ts
+++ b/src/blaze/type.ts
@@ -1,8 +1,37 @@
-import { MessageView } from '../client/types/message';
+import { MessageCategory, MessageStatus } from '../client/types/message';
 
 export type MessageType = MessageView | TransferView | SystemConversationPayload;
 
-interface TransferView {
+export interface TransferData {
+  type: 'transaction';
+  snapshot_id: string;
+  transaction_hash: string;
+  user_id: string;
+  opponent_id: string;
+  asset_id: string;
+  amount: string;
+  memo: string;
+  created_at: string;
+}
+
+export interface MessageView {
+  type: 'message';
+  representative_id: string;
+  quote_message_id: string;
+  conversation_id: string;
+  user_id: string;
+  session_id: string;
+  message_id: string;
+  category: MessageCategory;
+  data: string | TransferData;
+  data_base64: string;
+  status: MessageStatus;
+  source: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface TransferView {
   type: 'transfer';
   snapshot_id: string;
   counter_user_id: string;
@@ -13,7 +42,7 @@ interface TransferView {
   created_at: string;
 }
 
-interface SystemConversationPayload {
+export interface SystemConversationPayload {
   action: string;
   participant_id: string;
   user_id?: string;
diff --git a/src/blaze/utils.ts b/src/blaze/utils.ts
index d5f24726..bfa0d3b7 100644
--- a/src/blaze/utils.ts
+++ b/src/blaze/utils.ts
@@ -2,8 +2,8 @@ import WebSocket from 'ws';
 import { v4 as uuid } from 'uuid';
 import { gzip, ungzip } from 'pako';
 import type Keystore from '../client/types/keystore';
-import type { BlazeHandler, BlazeOptions, MessageView, BlazeMessage } from '../client/types';
-import { signAccessToken } from '../client/utils';
+import type { MessageView, BlazeHandler, BlazeOptions, BlazeMessage } from './type';
+import { signAccessToken } from '../client/utils/auth';
 
 export function websocket(
   keystore: Keystore | undefined,
diff --git a/src/client/http.ts b/src/client/http.ts
index 96a54007..78429237 100644
--- a/src/client/http.ts
+++ b/src/client/http.ts
@@ -8,9 +8,6 @@ import type { RequestConfig } from './types/client';
 import { ResponseError } from './error';
 import { signAccessToken } from './utils/auth';
 
-axios.defaults.headers.post['Content-Type'] = 'application/json';
-axios.defaults.headers.put['Content-Type'] = 'application/json';
-axios.defaults.headers.patch['Content-Type'] = 'application/json';
 export function http(keystore?: Keystore, config?: RequestConfig): AxiosInstance {
   const timeout = config?.timeout || 3000;
   const retries = config?.retry || 5;
@@ -19,6 +16,12 @@ export function http(keystore?: Keystore, config?: RequestConfig): AxiosInstance
     baseURL: 'https://api.mixin.one',
     timeout,
     ...config,
+    headers: {
+      post: { 'Content-Type': 'application/json' },
+      put: { 'Content-Type': 'application/json' },
+      patch: { 'Content-Type': 'application/json' },
+      ...(config?.headers ?? {}),
+    },
   });
 
   ins.interceptors.request.use((config: InternalAxiosRequestConfig) => {
@@ -60,5 +63,3 @@ export function http(keystore?: Keystore, config?: RequestConfig): AxiosInstance
 
   return ins;
 }
-
-export const mixinRequest = http();
diff --git a/src/client/index.ts b/src/client/index.ts
index d8996e3b..530d56dd 100644
--- a/src/client/index.ts
+++ b/src/client/index.ts
@@ -7,7 +7,6 @@ export { AddressClient } from './address';
 export { AppClient } from './app';
 export { AssetClient } from './asset';
 export { AttachmentClient } from './attachment';
-export { BlazeClient } from '../blaze/client';
 export { CircleClient } from './circle';
 export { CodeClient } from './code';
 export { CollectibleClient, MintMinimumCost, GroupMembers, GroupThreshold } from './collectible';
@@ -25,6 +24,5 @@ export { UserClient } from './user';
 export { UtxoClient } from './utxo';
 
 export * from './mixin-client';
-export { mixinRequest } from './http';
 export { ResponseError } from './error';
 export * from './utils';
diff --git a/src/client/mixin-client.ts b/src/client/mixin-client.ts
index 8ad5fe24..8268dc1c 100644
--- a/src/client/mixin-client.ts
+++ b/src/client/mixin-client.ts
@@ -1,4 +1,3 @@
-import merge from 'lodash.merge';
 import type { AxiosInstance } from 'axios';
 import type Keystore from './types/keystore';
 import type { HTTPConfig, RequestClient } from './types';
@@ -20,15 +19,13 @@ import { PaymentBaseClient } from './payment';
 import { PinKeystoreClient } from './pin';
 import { TransferKeystoreClient } from './transfer';
 import { UserKeystoreClient } from './user';
-import { BlazeKeystoreClient } from '../blaze/client';
 import { UtxoKeystoreClient } from './utxo';
 import { SafeKeystoreClient } from './safe';
 
-const KeystoreClient = (axiosInstance: AxiosInstance, keystore: Keystore | undefined, config: HTTPConfig) => ({
+const KeystoreClient = (axiosInstance: AxiosInstance, keystore: Keystore | undefined) => ({
   address: AddressKeystoreClient(axiosInstance, keystore),
   app: AppKeystoreClient(axiosInstance, keystore),
   asset: AssetKeystoreClient(axiosInstance),
-  blaze: BlazeKeystoreClient(keystore, config.blazeOptions),
   attachment: AttachmentKeystoreClient(axiosInstance),
   circle: CircleKeystoreClient(axiosInstance),
   code: CodeKeystoreClient(axiosInstance),
@@ -55,7 +52,7 @@ export function MixinApi(config: HTTPConfig = {}): KeystoreClientReturnType & Re
   const axiosInstance = createAxiosClient(keystore, requestConfig);
   const requestClient = createRequestClient(axiosInstance);
 
-  const keystoreClient = KeystoreClient(axiosInstance, keystore, config);
+  const keystoreClient = KeystoreClient(axiosInstance, keystore);
 
-  return merge(keystoreClient, requestClient);
+  return { ...keystoreClient, ...requestClient };
 }
diff --git a/src/client/types/client.ts b/src/client/types/client.ts
index e1d7a966..d7f0f39a 100644
--- a/src/client/types/client.ts
+++ b/src/client/types/client.ts
@@ -1,6 +1,5 @@
 import { AxiosInstance, AxiosRequestConfig } from 'axios';
 import type { Keystore } from './keystore';
-import { BlazeOptions } from '../../blaze/type';
 
 export interface RequestConfig extends Partial<
   Pick<AxiosRequestConfig, 'baseURL' | 'headers' | 'timeout' | 'httpAgent' | 'httpsAgent' | 'onDownloadProgress' | 'onUploadProgress' | 'proxy'>
@@ -11,7 +10,6 @@ export interface RequestConfig extends Partial<
 }
 
 export interface HTTPConfig {
-  blazeOptions?: BlazeOptions;
   keystore?: Keystore;
   requestConfig?: RequestConfig;
 }
diff --git a/src/client/types/index.ts b/src/client/types/index.ts
index 63d61225..3d74aa08 100644
--- a/src/client/types/index.ts
+++ b/src/client/types/index.ts
@@ -2,7 +2,6 @@ export * from './address';
 export * from './app';
 export * from './asset';
 export * from './attachment';
-export * from '../../blaze/type';
 export * from './circle';
 export * from './client';
 export * from './code';
diff --git a/src/client/types/message.ts b/src/client/types/message.ts
index a4d18c95..c5c470ca 100644
--- a/src/client/types/message.ts
+++ b/src/client/types/message.ts
@@ -29,23 +29,6 @@ export interface AcknowledgementRequest {
   status: string;
 }
 
-export interface MessageView {
-  type: 'message';
-  representative_id: string;
-  quote_message_id: string;
-  conversation_id: string;
-  user_id: string;
-  session_id: string;
-  message_id: string;
-  category: MessageCategory;
-  data: string;
-  data_base64: string;
-  status: MessageStatus;
-  source: string;
-  created_at: string;
-  updated_at: string;
-}
-
 export interface MessageRequest {
   conversation_id: string;
   recipient_id?: string;
diff --git a/src/index.ts b/src/index.ts
index d276823d..06b43aa4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,4 +1,3 @@
 export * from './client';
-export * from './blaze';
 export * from './webview';
 export * from './constant';