Introduction
What is OKX OS
Preparation
Supported Networks
Wallet API
Introduction
Quick Start
On-Chain Information Query
Wallet Account Management
Transaction Broadcasting
Pre-Transaction Information
Sign InfoGas PriceGas LimitNonceSUI ObjectAddress Validation
Transaction BroadcastTransaction Order
Signing SDK
Resources
DEX API
Introduction
Quick start
Swap API
Cross-chain API
Limit order API
DEX Widget
Marketplace API
Introduction
Runes API
Market API
BTC Ordinals API
Fractal Ordinals API
Error codes
DeFi API
Introduction
Quickstart
API reference
Error code
More resources
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Wallet API

Pre-Transaction Information#

The pre-transaction information section mainly includes obtaining relevant data and verification before a transaction.

Sign Info
Provides network fees, nonce, and other parameters required for signing.
Gas Price
Dynamically retrieve gas prices for EVM account models and UTXO model networks
Gas Limit
Obtain the estimated gas limit consumption
Nonce
Get the transaction nonce
Sui object
Get the SUI object
Address Validation
Check if the address format is valid before the transaction