A community-maintained on-chain order book DEX forked from Project Serum after its collapse. OpenBook v2 features a fully on-chain central limit order book (CLOB) with maker/taker fees. It supports limit orders, IOC (immediate-or-cancel), and post-only orders. Many Solana DEXs use OpenBook markets as a liquidity source.
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A community-maintained on-chain order book DEX forked from Project Serum after its collapse. OpenBook v2 features a fully on-chain central limit order book (CLOB) with maker/taker fees. It supports limit orders, IOC (immediate-or-cancel), and post-only orders. Many Solana DEXs use OpenBook markets as a liquidity source.
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Think of it as a market mechanic used to price, route, or move capital through liquidity apps.
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AMMs, routing, liquidity, lending, and trading infrastructure.
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OpenBook (openbook) Category: DeFi Definition: A community-maintained on-chain order book DEX forked from Project Serum after its collapse. OpenBook v2 features a fully on-chain central limit order book (CLOB) with maker/taker fees. It supports limit orders, IOC (immediate-or-cancel), and post-only orders. Many Solana DEXs use OpenBook markets as a liquidity source. Aliases: Serum v4 Related: Order Book (On-Chain), DEX (Decentralized Exchange)
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A trading system that matches buy and sell orders at specified prices, implemented fully on-chain. Unlike AMMs, order books enable limit orders and don't require liquidity pools. Solana's high throughput makes on-chain order books viable. Phoenix uses a FIFO matching engine; OpenBook (Serum v4) uses a crank-based model.
A protocol for trading tokens directly on-chain without a centralized intermediary. Solana DEXs use either AMM pools (Raydium, Orca, Meteora) or on-chain order books (Phoenix, OpenBook). DEXs are composable—aggregators like Jupiter route through multiple DEXs for optimal pricing.
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A service that provides external data (prices, randomness) to on-chain programs. DeFi protocols rely on oracles for accurate price feeds to calculate collateral ratios, liquidation thresholds, and swap rates. Solana's primary oracles are Pyth (high-frequency price feeds) and Switchboard (general-purpose data feeds and VRF).
A leading Solana DEX focused on concentrated liquidity through its Whirlpool AMM. Orca emphasizes user experience and capital efficiency. Whirlpools allow LPs to set custom price ranges. Orca is a major liquidity source for Jupiter aggregation. It uses a tick-based CLMM similar to Uniswap v3 adapted for Solana's architecture.
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A trading system that matches buy and sell orders at specified prices, implemented fully on-chain. Unlike AMMs, order books enable limit orders and don't require liquidity pools. Solana's high throughput makes on-chain order books viable. Phoenix uses a FIFO matching engine; OpenBook (Serum v4) uses a crank-based model.
A protocol for trading tokens directly on-chain without a centralized intermediary. Solana DEXs use either AMM pools (Raydium, Orca, Meteora) or on-chain order books (Phoenix, OpenBook). DEXs are composable—aggregators like Jupiter route through multiple DEXs for optimal pricing.
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A protocol that enables token swaps using algorithmic pricing against pooled liquidity instead of matching individual buyers and sellers. AMMs use mathematical formulas (typically constant product x*y=k) to determine prices based on the ratio of tokens in a liquidity pool. On Solana, major AMMs include Raydium, Orca, and Meteora.
An AMM design where liquidity providers concentrate their capital within specific price ranges instead of across the full 0-to-infinity range. CLMMs dramatically improve capital efficiency—LPs earn more fees per dollar deposited within their active range. If the price moves outside the range, the position becomes inactive. Orca Whirlpools and Raydium CLMM are leading implementations on Solana.
A smart-contract-held reserve of two or more tokens that enables trading via an AMM. Users deposit token pairs in specified ratios to become liquidity providers and earn trading fees. Pools are identified by their token pair and fee tier. Pool depth (total value locked) determines price impact for trades.
A token issued to liquidity providers representing their proportional share of a pool's reserves and accrued fees. LP tokens can be burned to withdraw the underlying assets. The value of LP tokens changes as the pool's token ratios shift and fees accumulate. LP tokens are often stakeable in yield farming programs for additional rewards.