diff --git a/packages/extension-base/package.json b/packages/extension-base/package.json
index a117a487fb..741c5acfe5 100644
--- a/packages/extension-base/package.json
+++ b/packages/extension-base/package.json
@@ -71,6 +71,7 @@
     "browser-passworder": "^2.0.3",
     "buffer": "^6.0.3",
     "cross-fetch": "^3.1.5",
+    "dedot": "0.0.1-alpha.36",
     "dexie": "^3.2.2",
     "dexie-export-import": "^4.0.7",
     "eth-simple-keyring": "^4.2.0",
diff --git a/packages/extension-base/src/services/chain-service/handler/SubstrateApi.ts b/packages/extension-base/src/services/chain-service/handler/SubstrateApi.ts
index 219f78b7ac..0950a113e4 100644
--- a/packages/extension-base/src/services/chain-service/handler/SubstrateApi.ts
+++ b/packages/extension-base/src/services/chain-service/handler/SubstrateApi.ts
@@ -1,8 +1,6 @@
 // Copyright 2019-2022 @subwallet/extension-base authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import '@polkadot/types-augment';
-
 import { options as acalaOptions } from '@acala-network/api';
 import { GearApi } from '@gear-js/api';
 import { rpc as oakRpc, types as oakTypes } from '@oak-foundation/types';
@@ -10,10 +8,11 @@ import { MetadataItem } from '@subwallet/extension-base/background/KoniTypes';
 import { _API_OPTIONS_CHAIN_GROUP, API_AUTO_CONNECT_MS, API_CONNECT_TIMEOUT } from '@subwallet/extension-base/services/chain-service/constants';
 import { getSubstrateConnectProvider } from '@subwallet/extension-base/services/chain-service/handler/light-client';
 import { DEFAULT_AUX } from '@subwallet/extension-base/services/chain-service/handler/SubstrateChainHandler';
-import { _ApiOptions } from '@subwallet/extension-base/services/chain-service/handler/types';
+import { _ApiOptions, _SubstrateApiMode } from '@subwallet/extension-base/services/chain-service/handler/types';
 import { _ChainConnectionStatus, _SubstrateApi, _SubstrateDefaultFormatBalance } from '@subwallet/extension-base/services/chain-service/types';
 import { createPromiseHandler, PromiseHandler } from '@subwallet/extension-base/utils/promise';
 import { goldbergRpc, goldbergTypes, spec as availSpec } from 'avail-js-sdk';
+import { DedotClient, WsProvider as DedotWsProvider } from 'dedot';
 import { BehaviorSubject } from 'rxjs';
 
 import { ApiPromise, WsProvider } from '@polkadot/api';
@@ -28,7 +27,7 @@ import { defaults as addressDefaults } from '@polkadot/util-crypto/address/defau
 
 export class SubstrateApi implements _SubstrateApi {
   chainSlug: string;
-  api: ApiPromise;
+  _api: ApiPromise | DedotClient;
   providerName?: string;
   provider: ProviderInterface;
   apiUrl: string;
@@ -41,6 +40,11 @@ export class SubstrateApi implements _SubstrateApi {
   private handleApiReady: PromiseHandler<_SubstrateApi>;
   public readonly isApiConnectedSubject = new BehaviorSubject(false);
   public readonly connectionStatusSubject = new BehaviorSubject(_ChainConnectionStatus.DISCONNECTED);
+
+  get api (): ApiPromise {
+    return this._api as ApiPromise;
+  }
+
   get isApiConnected (): boolean {
     return this.isApiConnectedSubject.getValue();
   }
@@ -86,7 +90,7 @@ export class SubstrateApi implements _SubstrateApi {
     }
   }
 
-  private createApi (provider: ProviderInterface, externalApiPromise?: ApiPromise): ApiPromise {
+  private createApiPromise (provider: ProviderInterface, externalApiPromise?: ApiPromise): ApiPromise {
     const apiOption: ApiOptions = {
       provider,
       typesBundle,
@@ -150,14 +154,41 @@ export class SubstrateApi implements _SubstrateApi {
     return api;
   }
 
-  constructor (chainSlug: string, apiUrl: string, { externalApiPromise, metadata, providerName }: _ApiOptions = {}) {
+  private createDedotClient (providerUrl: string): DedotClient {
+    const wsProvider = new DedotWsProvider(providerUrl);
+    const dedot = new DedotClient(wsProvider);
+
+    dedot.on('ready', this.onReady.bind(this));
+    dedot.on('connected', this.onConnect.bind(this));
+    dedot.on('disconnected', this.onDisconnect.bind(this));
+    dedot.on('error', this.onError.bind(this));
+
+    return dedot;
+  }
+
+  private createApiByMode (mode: _SubstrateApiMode, apiUrl: string, externalApiPromise?: ApiPromise) {
+    switch (mode) {
+      case _SubstrateApiMode.DEDOT: {
+        this._api = this.createDedotClient(apiUrl);
+
+        break;
+      }
+
+      default: {
+        this.provider = this.createProvider(apiUrl);
+        this._api = this.createApiPromise(this.provider, externalApiPromise);
+      }
+    }
+  }
+
+  constructor (chainSlug: string, apiUrl: string, { externalApiPromise, metadata, mode, providerName }: _ApiOptions = {}) {
     this.chainSlug = chainSlug;
     this.apiUrl = apiUrl;
     this.providerName = providerName;
     this.registry = new TypeRegistry();
     this.metadata = metadata;
     this.provider = this.createProvider(apiUrl);
-    this.api = this.createApi(this.provider, externalApiPromise);
+    this._api = this.createApiPromise(this.provider, externalApiPromise);
 
     this.handleApiReady = createPromiseHandler<_SubstrateApi>();
   }
@@ -182,7 +213,7 @@ export class SubstrateApi implements _SubstrateApi {
     // Create new provider and api
     this.apiUrl = apiUrl;
     this.provider = this.createProvider(apiUrl);
-    this.api = this.createApi(this.provider);
+    this._api = this.createApiPromise(this.provider);
   }
 
   connect (): void {
diff --git a/packages/extension-base/src/services/chain-service/handler/types.ts b/packages/extension-base/src/services/chain-service/handler/types.ts
index 8f95d2b622..0d76d53f8b 100644
--- a/packages/extension-base/src/services/chain-service/handler/types.ts
+++ b/packages/extension-base/src/services/chain-service/handler/types.ts
@@ -28,7 +28,14 @@ export interface _ApiOptions {
   providerName?: string,
   metadata?: MetadataItem,
   onUpdateStatus?: (status: _ChainConnectionStatus) => void,
-  externalApiPromise?: ApiPromise
+  externalApiPromise?: ApiPromise,
+  mode?: _SubstrateApiMode
+}
+
+export enum _SubstrateApiMode {
+  POLKADOT_JS = 'POLKADOT_JS',
+  DEDOT = 'DEDOT',
+  PAPI = 'PAPI'
 }
 
 export enum _CHAIN_VALIDATION_ERROR {
diff --git a/packages/extension-base/src/services/chain-service/types.ts b/packages/extension-base/src/services/chain-service/types.ts
index 2ea0def934..ac9d799dae 100644
--- a/packages/extension-base/src/services/chain-service/types.ts
+++ b/packages/extension-base/src/services/chain-service/types.ts
@@ -5,6 +5,7 @@
 
 import { _AssetRef, _AssetType, _ChainAsset, _ChainInfo, _CrowdloanFund } from '@subwallet/chain-list/types';
 import { _CHAIN_VALIDATION_ERROR } from '@subwallet/extension-base/services/chain-service/handler/types';
+import { DedotClient } from 'dedot';
 import { BehaviorSubject } from 'rxjs';
 import Web3 from 'web3';
 
@@ -81,6 +82,7 @@ export interface _SubstrateApiState {
 }
 
 export interface _SubstrateApi extends _SubstrateApiState, _ChainBaseApi {
+  _api: ApiPromise | DedotClient;
   api: ApiPromise;
   isReady: Promise<_SubstrateApi>;
 
diff --git a/yarn.lock b/yarn.lock
index 11dce506db..4a1d22efc9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1882,6 +1882,136 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@dedot/api@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "@dedot/api@npm:0.0.1-alpha.36"
+  dependencies:
+    "@dedot/codecs": 0.0.1-alpha.36
+    "@dedot/providers": 0.0.1-alpha.36
+    "@dedot/runtime-specs": 0.0.1-alpha.36
+    "@dedot/shape": 0.0.1-alpha.36
+    "@dedot/storage": 0.0.1-alpha.36
+    "@dedot/types": 0.0.1-alpha.36
+    "@dedot/utils": 0.0.1-alpha.36
+  checksum: fe5fae1576aa1a19c3f5bf22ad810b71f4e77594abff8135224deaa539f834b692ba7ee1cc5d2886970c044d016fc2e9d500e037c9d7688dc664c33b368dd3cc
+  languageName: node
+  linkType: hard
+
+"@dedot/cli@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "@dedot/cli@npm:0.0.1-alpha.36"
+  dependencies:
+    "@dedot/api": 0.0.1-alpha.36
+    "@dedot/codecs": 0.0.1-alpha.36
+    "@dedot/codegen": 0.0.1-alpha.36
+    "@polkadot/types-support": ^12.0.1
+    yargs: ^17.7.2
+  bin:
+    dedot: bin/dedot
+    djs: bin/dedot
+  checksum: e1c4f1b90f232efcb923fa7e22f2fdb0a58c7e41932b13ed476a1743b80300e4f598a4ff8250f55ab298a2e98d69852a0e5769857b1cb0db9c18fc060e1ca72c
+  languageName: node
+  linkType: hard
+
+"@dedot/codecs@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "@dedot/codecs@npm:0.0.1-alpha.36"
+  dependencies:
+    "@dedot/shape": 0.0.1-alpha.36
+    "@dedot/utils": 0.0.1-alpha.36
+  checksum: f408d324cbd7ea23f284e10e0c42b355acbdcaca29b612c73b82de3fe5d876be4c60bea5011f118874dee3f7dd3e1645fce2ef23553bafc77f193c4fc5417e1f
+  languageName: node
+  linkType: hard
+
+"@dedot/codegen@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "@dedot/codegen@npm:0.0.1-alpha.36"
+  dependencies:
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+    "@dedot/codecs": 0.0.1-alpha.36
+    "@dedot/providers": 0.0.1-alpha.36
+    "@dedot/runtime-specs": 0.0.1-alpha.36
+    "@dedot/shape": 0.0.1-alpha.36
+    "@dedot/types": 0.0.1-alpha.36
+    "@dedot/utils": 0.0.1-alpha.36
+    handlebars: ^4.7.8
+    prettier: ^3.3.2
+  checksum: d0bffe2481bcf1254e3524affaea1c0d6aee90cf64a68d91fd6f31dbbd0bd3e2661e562821605bf250dcd6e4b868047ff5e7a427ad3052368f3cef823b718c5d
+  languageName: node
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+
+"@dedot/contracts@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "@dedot/contracts@npm:0.0.1-alpha.36"
+  dependencies:
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+    "@dedot/codecs": 0.0.1-alpha.36
+    "@dedot/types": 0.0.1-alpha.36
+    "@dedot/utils": 0.0.1-alpha.36
+  checksum: 36840222ee01ab88f9b41853e833b8721348adf05885c33bc34b9c98c1229810fa9fbcfa14b8a0b1790882b83e7156bf3e1f4f0d789caa74285c4e55882c9147
+  languageName: node
+  linkType: hard
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+"@dedot/providers@npm:0.0.1-alpha.36":
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+  resolution: "@dedot/providers@npm:0.0.1-alpha.36"
+  dependencies:
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+    "@polkadot/x-ws": ^12.6.2
+  checksum: 881739ed84a6460c28c268888f25bbfe89c8a4027bb8eaeca8ac94216506261a5d381aa7bbe96e0927e88b03d95fabc1cdd0ea6a94a7be234234ee7b761b93de
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+  dependencies:
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+  checksum: 07e8823976a87e066232ee9ed863e0a039e04101a94ea492ef49d3c2db3441178119b60945850c3b19cfb44846644e295b3bd7e89fb35e3cc446ea57f9e346bd
+  languageName: node
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+"@dedot/shape@npm:0.0.1-alpha.36":
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+  resolution: "@dedot/shape@npm:0.0.1-alpha.36"
+  dependencies:
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+"@dedot/storage@npm:0.0.1-alpha.36":
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+  checksum: fe7411cd836f5879a104a662d530f5d4fa77f792d7a46ae9919c02bed07f13adc6af4d047233694af7f7723c2aed72f57ed89d9a5ed397cdb3803ea89a3efa62
+  languageName: node
+  linkType: hard
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+"@dedot/types@npm:0.0.1-alpha.36":
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+  resolution: "@dedot/types@npm:0.0.1-alpha.36"
+  dependencies:
+    "@dedot/codecs": 0.0.1-alpha.36
+    "@dedot/shape": 0.0.1-alpha.36
+    "@dedot/utils": 0.0.1-alpha.36
+  checksum: a31e33360fdbc20dfc313d452a8be3e0630fdd40e9d621e6be2f31dc39f9c35f1a7d38bd035fd5479c038c074d4e6353d7ad94a8f5a9582706be6096e139b5af
+  languageName: node
+  linkType: hard
+
+"@dedot/utils@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "@dedot/utils@npm:0.0.1-alpha.36"
+  dependencies:
+    "@noble/hashes": ^1.4.0
+    "@scure/base": ^1.1.7
+    eventemitter3: ^5.0.1
+  checksum: 5caba2a981df484a3b853557800490336159053c83ccfcdcdd7631ba4d7fece41b6f9fbf9bf9e1426e6c9b5e6c2ecc51d383566892723955790fafd7c33a44fa
+  languageName: node
+  linkType: hard
+
 "@digitalnative/type-definitions@npm:1.1.27":
   version: 1.1.27
   resolution: "@digitalnative/type-definitions@npm:1.1.27"
@@ -3739,7 +3869,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@noble/hashes@npm:^1.3.1":
+"@noble/hashes@npm:^1.3.1, @noble/hashes@npm:^1.4.0":
   version: 1.4.0
   resolution: "@noble/hashes@npm:1.4.0"
   checksum: 8ba816ae26c90764b8c42493eea383716396096c5f7ba6bea559993194f49d80a73c081f315f4c367e51bd2d5891700bcdfa816b421d24ab45b41cb03e4f3342
@@ -5572,6 +5702,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@scure/base@npm:^1.1.7":
+  version: 1.1.7
+  resolution: "@scure/base@npm:1.1.7"
+  checksum: d9084be9a2f27971df1684af9e40bb750e86f549345e1bb3227fb61673c0c83569c92c1cb0a4ddccb32650b39d3cd3c145603b926ba751c9bc60c27317549b20
+  languageName: node
+  linkType: hard
+
 "@scure/bip32@npm:1.3.3":
   version: 1.3.3
   resolution: "@scure/bip32@npm:1.3.3"
@@ -6034,6 +6171,7 @@ __metadata:
     browser-passworder: ^2.0.3
     buffer: ^6.0.3
     cross-fetch: ^3.1.5
+    dedot: 0.0.1-alpha.36
     dexie: ^3.2.2
     dexie-export-import: ^4.0.7
     eth-simple-keyring: ^4.2.0
@@ -12278,6 +12416,26 @@ __metadata:
   languageName: node
   linkType: hard
 
+"dedot@npm:0.0.1-alpha.36":
+  version: 0.0.1-alpha.36
+  resolution: "dedot@npm:0.0.1-alpha.36"
+  dependencies:
+    "@dedot/api": 0.0.1-alpha.36
+    "@dedot/cli": 0.0.1-alpha.36
+    "@dedot/codecs": 0.0.1-alpha.36
+    "@dedot/contracts": 0.0.1-alpha.36
+    "@dedot/providers": 0.0.1-alpha.36
+    "@dedot/runtime-specs": 0.0.1-alpha.36
+    "@dedot/shape": 0.0.1-alpha.36
+    "@dedot/types": 0.0.1-alpha.36
+    "@dedot/utils": 0.0.1-alpha.36
+  bin:
+    dedot: bin/dedot
+    djs: bin/dedot
+  checksum: 5c0c966de82833d0f3d80633507af6efdf1242dd12f54d070d5d146b668538b4e713981e6438e6c9bff8cec0a1d721b47e96eb8f49e194d44c47b525a0426616
+  languageName: node
+  linkType: hard
+
 "deep-extend@npm:^0.6.0":
   version: 0.6.0
   resolution: "deep-extend@npm:0.6.0"
@@ -15590,6 +15748,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"handlebars@npm:^4.7.8":
+  version: 4.7.8
+  resolution: "handlebars@npm:4.7.8"
+  dependencies:
+    minimist: ^1.2.5
+    neo-async: ^2.6.2
+    source-map: ^0.6.1
+    uglify-js: ^3.1.4
+    wordwrap: ^1.0.0
+  dependenciesMeta:
+    uglify-js:
+      optional: true
+  bin:
+    handlebars: bin/handlebars
+  checksum: 00e68bb5c183fd7b8b63322e6234b5ac8fbb960d712cb3f25587d559c2951d9642df83c04a1172c918c41bcfc81bfbd7a7718bbce93b893e0135fc99edea93ff
+  languageName: node
+  linkType: hard
+
 "har-schema@npm:^2.0.0":
   version: 2.0.0
   resolution: "har-schema@npm:2.0.0"
@@ -22199,6 +22375,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"prettier@npm:^3.3.2":
+  version: 3.3.2
+  resolution: "prettier@npm:3.3.2"
+  bin:
+    prettier: bin/prettier.cjs
+  checksum: 5557d8caed0b182f68123c2e1e370ef105251d1dd75800fadaece3d061daf96b1389141634febf776050f9d732c7ae8fd444ff0b4a61b20535e7610552f32c69
+  languageName: node
+  linkType: hard
+
 "pretty-error@npm:^4.0.0":
   version: 4.0.0
   resolution: "pretty-error@npm:4.0.0"
@@ -25791,6 +25976,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"subshape@npm:^0.14.0":
+  version: 0.14.0
+  resolution: "subshape@npm:0.14.0"
+  checksum: 171a2d55db431917e1206b3cd9b4df976406fb12358f4932aff77d8d67f5564aec6909803ab3b95374876dcfc55c5a9582d0f2c164903e9996289cfcac8dfbd9
+  languageName: node
+  linkType: hard
+
 "superellipsejs@npm:^0.0.6":
   version: 0.0.6
   resolution: "superellipsejs@npm:0.0.6"
@@ -26542,6 +26734,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"uglify-js@npm:^3.1.4":
+  version: 3.18.0
+  resolution: "uglify-js@npm:3.18.0"
+  bin:
+    uglifyjs: bin/uglifyjs
+  checksum: 887733d05d4139a94dffd04a5f07ee7d8be70201c016ea48cb82703778b5c48fadbe6e5e7ac956425522f72e657d3eade23f06ae8a0e2eeed2d684bf6cc25e36
+  languageName: node
+  linkType: hard
+
 "uint8arrays@npm:3.1.0":
   version: 3.1.0
   resolution: "uint8arrays@npm:3.1.0"
@@ -28158,6 +28359,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"wordwrap@npm:^1.0.0":
+  version: 1.0.0
+  resolution: "wordwrap@npm:1.0.0"
+  checksum: 2a44b2788165d0a3de71fd517d4880a8e20ea3a82c080ce46e294f0b68b69a2e49cff5f99c600e275c698a90d12c5ea32aff06c311f0db2eb3f1201f3e7b2a04
+  languageName: node
+  linkType: hard
+
 "wrap-ansi-cjs@npm:wrap-ansi@^7.0.0, wrap-ansi@npm:^7.0.0":
   version: 7.0.0
   resolution: "wrap-ansi@npm:7.0.0"
@@ -28451,6 +28659,21 @@ __metadata:
   languageName: node
   linkType: hard
 
+"yargs@npm:^17.7.2":
+  version: 17.7.2
+  resolution: "yargs@npm:17.7.2"
+  dependencies:
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+    escalade: ^3.1.1
+    get-caller-file: ^2.0.5
+    require-directory: ^2.1.1
+    string-width: ^4.2.3
+    y18n: ^5.0.5
+    yargs-parser: ^21.1.1
+  checksum: 73b572e863aa4a8cbef323dd911d79d193b772defd5a51aab0aca2d446655216f5002c42c5306033968193bdbf892a7a4c110b0d77954a7fdf563e653967b56a
+  languageName: node
+  linkType: hard
+
 "yocto-queue@npm:^0.1.0":
   version: 0.1.0
   resolution: "yocto-queue@npm:0.1.0"