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Network

Searcher (MEV)

An MEV actor that monitors on-chain state and pending transactions to identify profitable opportunities such as arbitrage, liquidations, or backruns, and submits transaction bundles through Jito's Block Engine to capture that value. Searchers compete on speed and strategy, paying tips to validators for bundle inclusion priority. Searcher operations range from beneficial (keeping markets efficient through arbitrage) to extractive (sandwich attacks that harm regular users).

IDsearcher
Plain meaning

Plain meaning

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An MEV actor that monitors on-chain state and pending transactions to identify profitable opportunities such as arbitrage, liquidations, or backruns, and submits transaction bundles through Jito's Block Engine to capture that value. Searchers compete on speed and strategy, paying tips to validators for bundle inclusion priority. Searcher operations range from beneficial (keeping markets efficient through arbitrage) to extractive (sandwich attacks that harm regular users).

Mental model

Mental model

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Technical context

Technical context

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Clusters, nodes, MEV actors, routing, and operating environments.

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Searcher (MEV) (searcher)
Category: Network
Definition: An MEV actor that monitors on-chain state and pending transactions to identify profitable opportunities such as arbitrage, liquidations, or backruns, and submits transaction bundles through Jito's Block Engine to capture that value. Searchers compete on speed and strategy, paying tips to validators for bundle inclusion priority. Searcher operations range from beneficial (keeping markets efficient through arbitrage) to extractive (sandwich attacks that harm regular users).
Related: MEV (Maximal Extractable Value), Bundle (Jito), Jito (MEV Infrastructure)
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Concept graph

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Branch

MEV (Maximal Extractable Value)

The profit a block producer (leader) or sophisticated trader can extract by controlling the ordering, inclusion, or exclusion of transactions within a block — including strategies like front-running, back-running, sandwich attacks, and arbitrage. On Solana, MEV dynamics differ from Ethereum because there is no public mempool; transactions are forwarded directly to the current leader, making latency and validator relationships central to MEV capture. The Jito infrastructure provides the dominant MEV marketplace on Solana through bundles and tips.

Front-RunningSandwich Attack
Open term
Branch

Bundle (Jito)

An atomic group of up to five transactions submitted together through Jito's Block Engine, where either all transactions land in sequence or none do, enabling MEV strategies that depend on guaranteed transaction ordering without risk of partial execution. Bundles are submitted with a tip to incentivize the leader to include them; the Block Engine simulates bundles, selects the most profitable ones, and forwards them to the Jito-enabled leader. Bundles land at the top of a block before standard transactions, giving searchers execution priority.

Tip (Jito)
Open term
Branch

Jito (MEV Infrastructure)

A Solana MEV infrastructure project by Jito Labs that operates a modified validator client (jito-solana), a Block Engine for bundle simulation and routing, and a tip distribution program that collects and distributes MEV tips to staked validators. Jito's client is run by a supermajority of Solana's stake-weighted validators, making its bundle and tip market the de-facto MEV layer for the network. Jito also operates a restaking and liquid staking protocol (JitoSOL) using proceeds from MEV tip redistribution.

Open term
Next concepts to explore

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Network

MEV (Maximal Extractable Value)

The profit a block producer (leader) or sophisticated trader can extract by controlling the ordering, inclusion, or exclusion of transactions within a block — including strategies like front-running, back-running, sandwich attacks, and arbitrage. On Solana, MEV dynamics differ from Ethereum because there is no public mempool; transactions are forwarded directly to the current leader, making latency and validator relationships central to MEV capture. The Jito infrastructure provides the dominant MEV marketplace on Solana through bundles and tips.

Open term
Network

Bundle (Jito)

An atomic group of up to five transactions submitted together through Jito's Block Engine, where either all transactions land in sequence or none do, enabling MEV strategies that depend on guaranteed transaction ordering without risk of partial execution. Bundles are submitted with a tip to incentivize the leader to include them; the Block Engine simulates bundles, selects the most profitable ones, and forwards them to the Jito-enabled leader. Bundles land at the top of a block before standard transactions, giving searchers execution priority.

Open term
Network

Jito (MEV Infrastructure)

A Solana MEV infrastructure project by Jito Labs that operates a modified validator client (jito-solana), a Block Engine for bundle simulation and routing, and a tip distribution program that collects and distributes MEV tips to staked validators. Jito's client is run by a supermajority of Solana's stake-weighted validators, making its bundle and tip market the de-facto MEV layer for the network. Jito also operates a restaking and liquid staking protocol (JitoSOL) using proceeds from MEV tip redistribution.

Open term
Network

Session Keys

Ephemeral keypairs with scoped permissions and time limits that allow users to delegate transaction signing to a temporary key, eliminating repeated wallet approval prompts during interactive sessions. On Solana, the session-keys crate provides Anchor macros for defining and validating session tokens. The Swig smart wallet SDK extends this with programmable wallets offering delegated permissions and gasless UX.

Open term
Commonly confused with

Terms nearby in vocabulary, acronym, or conceptual neighborhood.

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Networkmev

MEV (Maximal Extractable Value)

The profit a block producer (leader) or sophisticated trader can extract by controlling the ordering, inclusion, or exclusion of transactions within a block — including strategies like front-running, back-running, sandwich attacks, and arbitrage. On Solana, MEV dynamics differ from Ethereum because there is no public mempool; transactions are forwarded directly to the current leader, making latency and validator relationships central to MEV capture. The Jito infrastructure provides the dominant MEV marketplace on Solana through bundles and tips.

AliasMEV
Open term
Networkmev-protection

MEV Protection

Mechanisms and tools designed to shield users from harmful MEV extraction such as sandwich attacks and frontrunning. On Solana, MEV protection strategies include using private transaction submission (bypassing public RPCs), setting tight slippage tolerances, routing through MEV-aware aggregators like Jupiter that optimize execution, and submitting transactions via Jito bundles with ordering guarantees. Some wallets and dApps integrate MEV protection by default to improve user outcomes.

Open term
Related terms

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Networkmev

MEV (Maximal Extractable Value)

The profit a block producer (leader) or sophisticated trader can extract by controlling the ordering, inclusion, or exclusion of transactions within a block — including strategies like front-running, back-running, sandwich attacks, and arbitrage. On Solana, MEV dynamics differ from Ethereum because there is no public mempool; transactions are forwarded directly to the current leader, making latency and validator relationships central to MEV capture. The Jito infrastructure provides the dominant MEV marketplace on Solana through bundles and tips.

Open term
Networkbundle

Bundle (Jito)

An atomic group of up to five transactions submitted together through Jito's Block Engine, where either all transactions land in sequence or none do, enabling MEV strategies that depend on guaranteed transaction ordering without risk of partial execution. Bundles are submitted with a tip to incentivize the leader to include them; the Block Engine simulates bundles, selects the most profitable ones, and forwards them to the Jito-enabled leader. Bundles land at the top of a block before standard transactions, giving searchers execution priority.

Open term
Networkjito

Jito (MEV Infrastructure)

A Solana MEV infrastructure project by Jito Labs that operates a modified validator client (jito-solana), a Block Engine for bundle simulation and routing, and a tip distribution program that collects and distributes MEV tips to staked validators. Jito's client is run by a supermajority of Solana's stake-weighted validators, making its bundle and tip market the de-facto MEV layer for the network. Jito also operates a restaking and liquid staking protocol (JitoSOL) using proceeds from MEV tip redistribution.

Open term
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Network

Mainnet Beta

Solana's primary production cluster where real SOL and real economic activity occur; the "beta" designation reflects the network's ongoing protocol development despite being fully live since March 2020. It uses the same architecture as other clusters but with real validator stakes, live staking rewards, and permanent on-chain state. All production dApps, tokens, and NFTs exist on Mainnet Beta.

Open term
Network

Devnet

A persistent public Solana cluster intended for application development and testing, running the same software version as Mainnet Beta but with no real economic value. Devnet SOL can be freely airdropped via the CLI or faucet APIs, and the ledger may be reset periodically by Solana Labs. Developers use Devnet to test programs and integrations before deploying to Mainnet Beta.

Open term
Network

Testnet

A public Solana cluster used primarily by the Solana core team and validators to test new software releases, performance benchmarks, and network upgrades under real network conditions before they reach Mainnet Beta. Testnet SOL has no monetary value, and the ledger is reset more frequently than Devnet; it is less suitable for application development and more suited for validator operators validating their infrastructure.

Open term
Network

TPS (Transactions Per Second)

The rate at which a Solana cluster processes and commits transactions; Solana's theoretical maximum exceeds 65,000 TPS due to its parallel execution model, though real-world sustained throughput on Mainnet Beta typically ranges from 2,000–5,000 non-vote TPS under normal load. Vote transactions (used for consensus) make up a significant portion of all on-chain activity and are counted separately. High TPS is enabled by Proof of History timestamps, Sealevel parallel execution, and Gulf Stream mempool-less forwarding.

Open term