Struct OnchainClient 

pub struct OnchainClient { /* private fields */ }

On-chain client for Predict.fun operations

Implementations

impl OnchainClient

pub fn new(chain_id: ChainId, signer: PrivateKeySigner) -> Self

Create a new OnchainClient for direct EOA operations

pub fn with_predict_account( chain_id: ChainId, signer: PrivateKeySigner, predict_account: &str, ) -> Result<Self>

Create a new OnchainClient for Predict Account (smart wallet) operations

pub fn signer_address(&self) -> Address

Get the signer address

pub fn trading_address(&self) -> Address

Get the trading address (predict_account if set, otherwise signer)

pub fn is_smart_wallet(&self) -> bool

Check if using smart wallet

pub fn addresses(&self) -> &Addresses

Get the addresses configuration

pub async fn set_approvals( &self, is_neg_risk: bool, is_yield_bearing: bool, ) -> Result<()>

Set all necessary approvals for trading on the CTF Exchange.

This sets:

1. ERC-1155 setApprovalForAll on Conditional Tokens → CTF Exchange (allows exchange to move outcome tokens on behalf of the trader)
2. ERC-20 approve on USDT → CTF Exchange (allows exchange to take USDT collateral)

For neg-risk markets, also approves the Neg Risk Adapter.

pub async fn split_positions(&self, options: SplitOptions) -> Result<String>

Split USDT into UP/DOWN outcome tokens

Arguments

• options - Split options including condition_id, amount, and market type

Returns

Transaction hash on success