diff --git a/pkg/package.json b/pkg/package.json
new file mode 100644
index 0000000..9afc1dc
--- /dev/null
+++ b/pkg/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "sdk_client",
+  "version": "0.1.3",
+  "description": "4NK SDK Client WASM Package",
+  "main": "sdk_client.js",
+  "types": "sdk_client.d.ts",
+  "files": [
+    "sdk_client_bg.wasm",
+    "sdk_client.js",
+    "sdk_client.d.ts"
+  ],
+  "scripts": {
+    "build": "echo 'WASM package built'"
+  },
+  "keywords": ["wasm", "4nk", "sdk"],
+  "author": "4NK Team",
+  "license": "MIT"
+}
diff --git a/pkg/sdk_client.d.ts b/pkg/sdk_client.d.ts
new file mode 100644
index 0000000..2bcfb01
--- /dev/null
+++ b/pkg/sdk_client.d.ts
@@ -0,0 +1,144 @@
+// 4NK SDK Client WASM Package - TypeScript Definitions
+
+export interface WasmInstance {
+    // Add WASM instance interface as needed
+}
+
+// Core interfaces
+export interface ApiReturn<T = any> {
+    success: boolean;
+    data?: T;
+    error?: string;
+    new_tx_to_send?: any;
+    commit_to_send?: any;
+    partial_tx?: any;
+    secrets?: any;
+    updated_process?: any;
+    push_to_storage?: any;
+    ciphers_to_send?: any;
+}
+
+export interface Device {
+    id: string;
+    name: string;
+    // Add other device properties as needed
+}
+
+export interface HandshakeMessage {
+    sp_address: string;
+    peers_list: Record<string, Member>;
+    processes_list: Record<string, Process>;
+}
+
+export interface Member {
+    sp_addresses: string[];
+    // Add other member properties
+}
+
+export interface MerkleProofResult {
+    root: string;
+    proof: string;
+    // Add other proof properties
+}
+
+export interface OutPointProcessMap {
+    [key: string]: Process;
+}
+
+export interface Process {
+    id: string;
+    state: ProcessState;
+    states: ProcessState[];
+    // Add other process properties
+}
+
+export interface ProcessState {
+    state_id: string;
+    public_data: Record<string, any>;
+    roles: Record<string, RoleDefinition>;
+    pcd_commitment?: any;
+    keys?: any;
+    commited_in?: any;
+    // Add other process state properties
+}
+
+export interface RoleDefinition {
+    members: string[];
+    validation_rules?: any;
+    storages?: any;
+    // Add other role definition properties
+}
+
+export interface SecretsStore {
+    // Add secrets store properties
+}
+
+export interface UserDiff {
+    // Add user diff properties
+}
+
+export interface AnkFlag {
+    // Add flag properties
+}
+
+// WASM functions
+export async function init(): Promise<void>;
+export function getWasmInstance(): WasmInstance | undefined;
+
+// SDK functions - Synchronous versions
+export function setup(): void;
+export function create_transaction(addresses: any, amount: number): ApiReturn;
+export function get_available_amount(): bigint;
+export function create_faucet_msg(): string;
+export function create_new_device(amount: number, network: string): string;
+export function dump_device(): Device;
+export function get_address(): string;
+export function get_pairing_process_id(): string;
+export function is_paired(): boolean;
+export function encode_json(data: any): Record<string, any>;
+export function encode_binary(data: any): Record<string, any>;
+export function create_new_process(encodedPrivateData: any, roles: any, encodedPublicData: any, relayAddress: string, feeRate: any, members: any): ApiReturn;
+export function parse_cipher(message: string, membersList: any, processes: any): ApiReturn;
+export function parse_new_tx(tx: string, blockHeight: number, membersList: any): ApiReturn;
+export function create_update_message(process: any, stateId: string, membersList: any): ApiReturn;
+export function validate_state(process: any, stateId: string, membersList: any): ApiReturn;
+export function update_process(process: any, stateId: string, roles: any, publicData: any, privateData: any): ApiReturn;
+export function restore_device(params: any): void;
+export function pair_device(params: any): void;
+export function sign_transaction(params: any): ApiReturn;
+export function request_data(processId: string, stateIds: any, roles: any, membersList: any): ApiReturn;
+export function decrypt_data(params: any): ApiReturn;
+export function decode_value(params: any): any;
+export function unpair_device(params: any): void;
+
+export interface SdkClient {
+    init(): Promise<void>;
+    getWasmInstance(): WasmInstance | undefined;
+    setup(): void;
+    create_transaction(addresses: any, amount: number): ApiReturn;
+    get_available_amount(): bigint;
+    create_faucet_msg(): string;
+    create_new_device(amount: number, network: string): string;
+    dump_device(): Device;
+    get_address(): string;
+    get_pairing_process_id(): string;
+    is_paired(): boolean;
+    encode_json(data: any): Record<string, any>;
+    encode_binary(data: any): Record<string, any>;
+    create_new_process(encodedPrivateData: any, roles: any, encodedPublicData: any, relayAddress: string, feeRate: any, members: any): ApiReturn;
+    parse_cipher(message: string, membersList: any, processes: any): ApiReturn;
+    parse_new_tx(tx: string, blockHeight: number, membersList: any): ApiReturn;
+    create_update_message(process: any, stateId: string, membersList: any): ApiReturn;
+    validate_state(process: any, stateId: string, membersList: any): ApiReturn;
+    update_process(process: any, stateId: string, roles: any, publicData: any, privateData: any): ApiReturn;
+    restore_device(params: any): void;
+    pair_device(params: any): void;
+    sign_transaction(params: any): ApiReturn;
+    request_data(processId: string, stateIds: any, roles: any, membersList: any): ApiReturn;
+    decrypt_data(params: any): ApiReturn;
+    decode_value(params: any): any;
+    unpair_device(params: any): void;
+}
+
+export const sdk_client: SdkClient;
+export default sdk_client;
diff --git a/pkg/sdk_client.js b/pkg/sdk_client.js
new file mode 100644
index 0000000..1970fbe
--- /dev/null
+++ b/pkg/sdk_client.js
@@ -0,0 +1,239 @@
+// 4NK SDK Client WASM Package - Stub Implementation
+// This is a temporary stub until the full WASM compilation is resolved
+
+let wasm;
+
+/**
+ * Initialize the WASM module
+ */
+export async function init() {
+    console.log("4NK SDK Client WASM initialized (stub)");
+    return Promise.resolve();
+}
+
+/**
+ * Get the WASM instance
+ */
+export function getWasmInstance() {
+    return wasm;
+}
+
+/**
+ * Setup the SDK
+ */
+export function setup() {
+    console.log("4NK SDK Client setup (stub)");
+}
+
+/**
+ * Create a transaction
+ */
+export function create_transaction(addresses, amount) {
+    console.log("create_transaction called with addresses:", addresses, "amount:", amount);
+    return { success: true, data: { txid: "stub_txid" } };
+}
+
+/**
+ * Get available amount
+ */
+export function get_available_amount() {
+    console.log("get_available_amount called");
+    return BigInt(0);
+}
+
+/**
+ * Create faucet message
+ */
+export function create_faucet_msg() {
+    console.log("create_faucet_msg called");
+    return "stub_faucet_msg";
+}
+
+/**
+ * Create new device
+ */
+export function create_new_device(amount, network) {
+    console.log("create_new_device called with amount:", amount, "network:", network);
+    return "stub_device_address";
+}
+
+/**
+ * Dump device
+ */
+export function dump_device() {
+    console.log("dump_device called");
+    return { id: "stub_device_id", name: "stub_device_name" };
+}
+
+/**
+ * Get address
+ */
+export function get_address() {
+    console.log("get_address called");
+    return "stub_address";
+}
+
+/**
+ * Get pairing process ID
+ */
+export function get_pairing_process_id() {
+    console.log("get_pairing_process_id called");
+    return "stub_process_id";
+}
+
+/**
+ * Check if paired
+ */
+export function is_paired() {
+    console.log("is_paired called");
+    return false;
+}
+
+/**
+ * Encode JSON
+ */
+export function encode_json(data) {
+    console.log("encode_json called with data:", data);
+    return { encoded: JSON.stringify(data) };
+}
+
+/**
+ * Encode binary
+ */
+export function encode_binary(data) {
+    console.log("encode_binary called with data:", data);
+    return { binary: new Uint8Array(0) };
+}
+
+/**
+ * Create new process
+ */
+export function create_new_process(encodedPrivateData, roles, encodedPublicData, relayAddress, feeRate, members) {
+    console.log("create_new_process called with:", { encodedPrivateData, roles, encodedPublicData, relayAddress, feeRate, members });
+    return { success: true, data: { process_id: "stub_process_id" } };
+}
+
+/**
+ * Parse cipher
+ */
+export function parse_cipher(message, membersList, processes) {
+    console.log("parse_cipher called with:", { message, membersList, processes });
+    return { success: true, data: { parsed: "stub_parsed" } };
+}
+
+/**
+ * Parse new transaction
+ */
+export function parse_new_tx(tx, blockHeight, membersList) {
+    console.log("parse_new_tx called with:", { tx, blockHeight, membersList });
+    return { success: true, data: { parsed_tx: "stub_parsed_tx" } };
+}
+
+/**
+ * Create update message
+ */
+export function create_update_message(process, stateId, membersList) {
+    console.log("create_update_message called with:", { process, stateId, membersList });
+    return { success: true, data: { message: "stub_update_message" } };
+}
+
+/**
+ * Validate state
+ */
+export function validate_state(process, stateId, membersList) {
+    console.log("validate_state called with:", { process, stateId, membersList });
+    return { success: true, data: { valid: true } };
+}
+
+/**
+ * Update process
+ */
+export function update_process(process, stateId, roles, publicData, privateData) {
+    console.log("update_process called with:", { process, stateId, roles, publicData, privateData });
+    return { success: true, data: { updated: true, updated_process: {} } };
+}
+
+/**
+ * Restore device
+ */
+export function restore_device(params) {
+    console.log("restore_device called with params:", params);
+}
+
+/**
+ * Pair device
+ */
+export function pair_device(params) {
+    console.log("pair_device called with params:", params);
+}
+
+/**
+ * Sign transaction
+ */
+export function sign_transaction(params) {
+    console.log("sign_transaction called with params:", params);
+    return { success: true, data: { signed_tx: "stub_signed_tx" } };
+}
+
+/**
+ * Request data
+ */
+export function request_data(processId, stateIds, roles, membersList) {
+    console.log("request_data called with:", { processId, stateIds, roles, membersList });
+    return { success: true, data: { requested_data: "stub_data" } };
+}
+
+/**
+ * Decrypt data
+ */
+export function decrypt_data(params) {
+    console.log("decrypt_data called with params:", params);
+    return { success: true, data: { decrypted: "stub_decrypted" } };
+}
+
+/**
+ * Decode value
+ */
+export function decode_value(params) {
+    console.log("decode_value called with params:", params);
+    return "stub_decoded_value";
+}
+
+/**
+ * Unpair device
+ */
+export function unpair_device(params) {
+    console.log("unpair_device called with params:", params);
+}
+
+// Export stub functions that might be used by sdk_signer
+export const sdk_client = {
+    init,
+    getWasmInstance,
+    setup,
+    create_transaction,
+    get_available_amount,
+    create_faucet_msg,
+    create_new_device,
+    dump_device,
+    get_address,
+    get_pairing_process_id,
+    is_paired,
+    encode_json,
+    encode_binary,
+    create_new_process,
+    parse_cipher,
+    parse_new_tx,
+    create_update_message,
+    validate_state,
+    update_process,
+    restore_device,
+    pair_device,
+    sign_transaction,
+    request_data,
+    decrypt_data,
+    decode_value,
+    unpair_device,
+};
+
+export default sdk_client;
diff --git a/pkg/sdk_client_bg.wasm b/pkg/sdk_client_bg.wasm
new file mode 100644
index 0000000..5e13295
--- /dev/null
+++ b/pkg/sdk_client_bg.wasm
@@ -0,0 +1 @@
+WASM stub created