Provider API

Build a wallet connection that feels native. The Provider API is OneKey’s unified interface for dApps, giving you a consistent way to request accounts, sign, and send transactions across multiple chains.

What this gives you

• One interface, many chains: Keep a single integration flow while supporting EVM, Bitcoin, Solana, and more.
• Wallet‑ready UX: Works seamlessly with UI kits like Web3Modal for a clean connect experience.
• Production‑grade: Standardized methods and events to reduce edge cases across wallets and networks.

Supported Chains

• EVM: Ethereum, Polygon, BSC, Arbitrum, Optimism, Base, etc.
• Bitcoin: BTC, Lightning Network (WebLN)
• Solana: SOL
• Cosmos: ATOM and Cosmos SDK chains
• Move: Aptos, Sui
• Others: TON, TRON, Polkadot, Cardano, Algorand, Conflux, NEAR, Nostr

Select a chain from the sidebar to view detailed provider methods, signing flows, and examples.