bug: TronAdapter.getBalance returns 503 — rpc.walletconnect.org doesn't support TRON

[de-don]

Description

TronAdapter.getBalance() uses BlockchainApiController.getAddressBalance() which routes the request through rpc.walletconnect.org/v1?chainId=tron:0x94a9059e. This endpoint returns 503 Service Unavailable because the WalletConnect RPC proxy does not support TRON networks.

File: packages/adapters/tron/src/adapter.ts — getBalance() method

Expected Behavior

getBalance() should return the actual TRX balance. Either:

1. The RPC proxy should support TRON, or
2. TronAdapter.getBalance() should use the TRON fullnode HTTP API directly (similar to how TronConnectConnector.sendTransaction() already uses fullnode URLs)

Reproduction

1. Create AppKit with TronAdapter
2. Connect TronLink
3. Observe console: POST https://rpc.walletconnect.org/v1?chainId=tron:0x94a9059e&projectId=... 503 (Service Unavailable)
4. Balance in the AppKit modal shows 0 TRX

Impact

• Balance always shows 0 in AppKit modal/account view
• Console error spam on every connection and network switch
• [TronAdapter] getBalance error: Error: HTTP status code: 503 logged

Workaround

Override tronAdapter.getBalance after construction to use tronWeb.trx.getBalance() directly:

tronAdapter.getBalance = async (params) => {
    const balance = await tronWeb.trx.getBalance(params.address);
    return { balance: tronWeb.fromSun(balance).toString(), symbol: 'TRX' };
};

Environment

• @reown/appkit: 1.8.19
• @reown/appkit-adapter-tron: 1.8.19
• Vanilla JS (Angular)

[linear]

REOWN-4562