Introduction#

Transaction API supports onchain transaction simulation and broadcasting. It combines OKX Web3's proprietary RPC nodes with premium third-party nodes to enable intelligent broadcasting, lower failure rates, and faster confirmation speeds. Pair it with the Swap and Cross-Chain APIs to build a complete experience — no extra external resources needed.

Key Capabilities#

1. High-Availability Hybrid Node Architecture#

• Proprietary multi-chain node clusters for stable, high-performance service.
• Third-party premium nodes integrated to form a redundant, resilient network.
• Real-time health monitoring, dynamic load balancing, and sub-second failover.

2. Intelligent Multi-Broadcasting Engine#

• Broadcasts transactions across multiple node networks simultaneously.
• Distributed propagation algorithms that raise onchain success rates.
• Priority block-packaging for Ethereum, BNB Chain, Solana, and more.