What Is OpenBook Market?
Definition
OpenBook (formerly Serum v2) is an on-chain order book protocol on Solana. Creating an OpenBook market is required for Raydium AmmV4 liquidity pools.
OpenBook is Solana's decentralized order book protocol, the successor to Serum. Unlike AMM pools (which use algorithms to set prices), order books match buy and sell orders directly — similar to traditional stock exchanges.
- Lot size: Minimum tradeable quantity
- Tick size: Minimum price increment
- Vault signer nonce: Cryptographic parameter for the market's vault
Creating an OpenBook market is a prerequisite for launching a Raydium AmmV4 liquidity pool. The market handles order matching, while Raydium's AMM provides passive liquidity on top.
For most new token launches, the Raydium CPMM v2 flow is simpler (no OpenBook market needed). OpenBook markets are primarily used when you need order book functionality or legacy AmmV4 compatibility.
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Create an OpenBook Market