TON Connect protocol models

ℹ️ If you want to integrate TonConnect to your dApp, you should use @tonconnect/sdk

Latest API documentation

Summary

Package contains protocol requests, responses and event models and encoding, decoding functions.

You can use it to integrate TonConnect to your wallet app (written with TypeScript).

Get started

Install package

npm i @tonconnect/protocol

Use protocol models in your app

import { AppRequest, RpcMethod, WalletResponse } from '@tonconnect/protocol';

function myWalletAppRequestsHandler<T extends RpcMethod>(request: AppRequest<T>): Promise<WalletResponse<T>> {
    // handle request, ask the user for a confirmation and return WalletResponse
}

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Use protocol cryptography in your app

import { SessionCrypto, WalletMessage, Base64, hexToByteArray } from '@tonconnect/protocol';

function encodeIncommingHTTPBridgeRequest(encryptedMessage: string, from: string): WalletMessage {
    const sessionCrypto = new SessionCrypto(yourStoredSessionReypair);

    const decryptedMessage =
        sessionCrypto.decrypt(
            Base64.decode(bridgeIncomingMessage.message).toUint8Array(),
            hexToByteArray(bridgeIncomingMessage.from)
        );
    
    return  JSON.parse(decryptedMessage);
}
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Network identifiers

The package exports CHAIN enum with values MAINNET = '-239' and TESTNET = '-3' representing TON network IDs. The ChainId type (CHAIN | string) allows using these predefined values or any custom network identifier string, enabling support for custom networks and future network additions without protocol changes.

The ChainId is used to specify the desired network when establishing wallet connections (via TonAddressItem.network field), and for indicating the network context in transaction sending and data signing operations (like SignDataPayload.network field), ensuring that all protocol operations can target the correct network.